Bmw e30 temp sensor resistance. 03-17-2019, 06:42 PM.

Bmw e30 temp sensor resistance Tested ICV per the Bentley manual and the the center pin of the connector (pin 2) was 12 volts as it should be but when I measured the outside pins, pin one measured 9. When measuring right at the sensor terminals pg 6-23 using a digital volt/ohm meter, I get an instantaneous resistance of about 1. NOTE: The DIYPNPB55-K Kit has been discontinued as of 8/30/18. Temp gauge does not seem to function. If the temp sensor isn't sending the right values to the ECU then the fueling will be completely off. Check resistance of the sensor itself cold, and put it in hot water and see if check the resistance of the actual sensor at various temperatures against the following charts, White temp sensor for guage temp sensor white. The radiator is 40 degrees different at the top versus bottom. 85. You may have to register before you can post: click the register link above to proceed. That is, as its temperature increases its resistance decreases. Welman New member. If I remember correctly the m50 air temp sensor was slow to react and may have given a different reading at the same temp. 01 in. Managed to sort out the temp gauge and the brake pad sensor by cleaning and resoldering joints but fuel gauge still a General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; I used the stock M10 sensor. Various locations Stock E30 M3 has both sensors in the housing. I'm not getting any readings from my gauge after my swap. Dec 21, 2011 The temp guage is resistance based. 1991-1999 BMW 318is: Coupe(E30), Coupe(E36) 1995 BMW 318ti: Hatchback(E36) 1993-1995 BMW 320i: and how do they operate in terms of electrical resistance and temperature for the 1998 BMW M3? How does the electrical connector for the coolant temperature sensor on the 1998 BMW Z3? I went to BMW to have the temp sensor/gauge fixed. Members' ↳ New Members' General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 1. Hi everyone, I’m struggling with a low idle on an E30 with an m20. Used to determine if the engine is warm or cold. While it's relatively simple to test the Blue Temp Sensor, it is also important to test that the information Order Coolant temperature sensor for BMW 3 Saloon (E30) 320i 125 hp easily at AUTODOC Fast delivery and low prices Discover now for yourself So I'm checking CPS wiring to the DME and happened to measure the sensor resistance which should be 540 ohms + or - 50 ohms, mine is a new one which measures 1. The Mass Airflow Sensor (MAF) is a more modern version of the AFM. So you measure resistance if checking just the sensor. I assume one is monitored by the ECU, If you have a multimeter you can test the blue temperature sensor by checking the resistance. Should be more like 0. I think I posted about it on the inlet manifold thread. gauge needle is near the first white line, where it should be, then moving the needle to make it read the middle white line will cause the needle to move into the red "stop the engine now" area when the temperature only rises a few degrees, as it is designed to when idling in traffic. E; ↳ Feedback; ↳ Group Buys and Discounts; ↳ E30 related External Ads; Other BMW / Car Chat; ↳ Other BMW Chat; ↳ Other BMW This Genuine BMW Coolant Temperature Sensor (Mfg#13621709967) fits BMW E23 735i, BMW E24 635CSi, BMW E24 M6, BMW E28 528e, BMW E28 535i, BMW E28 M5, Hi , I'm currently testing my fuel delivery system and at a point of checking the ECU wiring to the blue temperature sensor, I can't find any resistance reading on pin numbers 24 & 45 , my question is if the circuit is intact ( I know plug C191 connections can fail which I'll inspect tomorrow) will the engine start and run if the sensor has failed completely . General E30; ↳ E30 BMW Chat; ↳ E30 Builds / In today's video, we take a deeper experimental dive into the temperature gauge in the E30 and figure out how to make it work in our N54 Swapped E30! The for - How to calibrate the ambient temp sensor See also: - Outside ambient temperature sensor reads -40° on the cluster & how to calibrate the ambient temp sensor & how to change OBC MID IHKA KTMP temperature Iv added an e30 single pin coolant temp sensor beside it. when the temp gauge in the cluster Based on your other pictures your temp. While I was at BMW, I suspect one could run a test . C. The curve of an NTC sensor is exponential and I needed that curve to Hot resistance seems a bit high. This is a single-pole sensor, located in the thermostat Explains and demonstrates how to replace the outside temperature sensor. 3 (55 pin connector) the reading i got at cold well today 2633 ohm and checked again following a short Ok, I have a misfiring 89 325i and I’m trying my hardest not to just buy an afm and see if that solves it. The AFM, or Air Flow Meter, is a metal flap that is You first need to decide what temp sensor you are going to use. The sensor is basically just a switch that opens and closes. I have a new temp sensor coming in the mail, the specs for the Bentley show a resistance value when the cars fully warmed up, and I'm not 100% sure if it's even getting to full operating temp. 33k (not 0. BROWN SENSOR: http://amzn. then read the new one and see how much they differthey have to be at the same temp. In his words, if the temp reading was -40F the AC system would "think" that it didn't need to work. I used the m52 sensor to avoid this potential issue. )" If the first post is correct then it means my crankshaft position sensor is bad because it is reading 300ohm, which would also mean my cam sensor is good which is reading 1200ohm. I ran the engine for like 5 mins heaters on full and was getting warm air but the temp gauge didn't budge. there is a simple resistance check that can be done to test your blue temperature sensor that would be worth it also hope you sort it. This site claims no affiliation with either of the above companies. Andy_magic E30 Zone Camper Posts: General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; This is BMW parts item 12621710511 (12-62-1-710-511), described as Genuine BMW Coolant Temperature Sensor for E30, E28, that you can buy at the best price with fast shipping. [img] https:// The new sensor resistance reading sounds much more like what I remember. The temp vs. Does anybody know at what resistance the coolant temp sensor triggers the dme to turn the fan on faster? IIRC, E30, E36, E46, E9x, F30, F32, F33, F36, F44) 1991 - 1999 ; Coolant Temp Sensor resistance? Bimmerforums. Could clearly see the voltage go up as it heated up and then began to fluctuate between 0. it’s spins incredibly freely and make a bit of a grinding noise. 04-09-2013, 10:57 AM #2. Also, you've got what looks like a 3. James '91 325i Sport '93 318i touring 16v. This site is provided as an expandable library for owners and future owners of BMW E30 cars. I believe most BMW senders/gauges from the 80/90's are BMW oem is $286, when there are a few alternatives on ECS Tuning for around $30-80, these should function testing it and that’s good now. Thread starter Welman; Start date Dec 21, 2011; W. If it changes to -40 when you remove the sensor, you need a new sensor. If the vane doesn't move freely or the resistance track is worn the DME may be receiving invalid data from the AFM. Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; 24V Engine Swaps; M50/52 & S50/52; If this is your first visit, be sure to check out the FAQ by clicking the link above. E30 -Start car and get it to operating temperature so that idle is where it should be. The rear one is the sender for your temp gauge. Remove the sensor connector and using a DC volt meter, ground This is *not* true if you try to measure the resistance of the sensor. Engine starts easily without issue but has a very slight misfire and mildly lumpy on idle. Blue temp sensor for ECU temp sensor blue. Ive checked the fuses for continuity and I'm going to check to see if the old sensor has the same resistance as the one i ordered that did not fit. 5 posts • Page 1 of 1. It was a combination of the thermostat giving in and the temp sensor that sits on the engine block right under the intake manifold. so testing it wouldn't be completely accurate. ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; ↳ E30 Technical Help; You add the E30 brown temp sensor for the temp gauge - you will need to run the brown/violet wire from the C101 Pin4 to the E30 sensor. On the RH rear of the LS1 in the head, is a steel plug, can i remove this and put a E36 BMW coolant sensor in there, and run the wires to the correct pins on the X20 connector? I assume it go's into the water Order Coolant temperature sensor for BMW 3 Saloon (E30) 325i X 170 hp easily at AUTODOC Fast delivery and low prices Discover now for yourself So im hooking up an aux fan into the e30 to clear room for the s/c check that you have wired up 86 and 85 properly, also check the grounds. if its buggered it will ready zero resistance, the blue one nearest the head is the dme. in order for the temperature gauge to work , I used the brown single pin temperature sensor in the engine block ( out of an m20 into the M50 block ) , so logically I thought the temperature gauge would be higher than 12 o'clock since the operating BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Outside Ambient Temperature Sensor Issue Post Reply Thread Tools: Search this Hi - recently acquired an E30 M3 (well last year but finally got it on the road). Hope for more feedback :D Found this in another e30 forum that I plan on trying possibly tomorrow towards the distributor First test whether the speedo sensor is working. I'm not seeing anything on here that sticks out on why i'm seeing so much current on this voltage output The ambient temperature sensor is a simple thermistor, where the resistance decreases as it gets hotter. 8L sensor (ECT) is a thermistor used to measure the In 1986 BMW had a campaign designed to make all the cars run better during warm-up and they installed a resister in one of the wires to the 2-wire sensor [greater resistance caused richer running]. 1985-06. My experience with this setup has been good in hot and cold weather temps using the stock E30 radiator. 0 Basic 027 My car starts only with the temperature sensor off for the ECU and operates on a very rich mixture of fuel and air. Any pointers for the wiring before i start digging? Cheers. Smoke test done, no leaks, blue temp sensor and all other electronics tested. E30 BMW M62/M60 V8 Swap; E30 BMW Buying Guide Translated from German; ECU Pinout and Electrical tests E30; Two of most common E30 Central locking/Power locking issues and how to fix them; E30 I checked resistance of the coolant temp sensor which was just under 100 when hot and just under 1000 when cold. This includes replacemet of the pi E30 Fanatic. Update: 03/07/2022 Checked the O2 sensor according to the instructions on the Bentley manual. I tried that and I Fitted a new blue temp sensor in the winter when i replaced the whole thermostat housing. - measured resistance between ICV and checked within it just enrichens the mixture till the temp sensor reads good and adjusts as the engine warms up 1) 1984 318i: non-pop out windows and roller fronts. Order BMW 3 Saloon (E30) 320i 129 HP Coolant temperature sensor easily at AUTODOC Fast delivery and low prices Discover now for yourself Info: BMW E30 320i Manuf. Does the sensor test correctly? It has It is the one just behind the the cold start (thermo time) switch. Unfortunately, not many standard E30 radiators have the hole for this. e. I was able to confirm the temp sensor and temp gauge are accurate. e30 BMW Car Pages: e30 O2 Sensors. Did you really think it was going to be that easy? '89 Alpine S52 with goodies. 5L M20B25 MT Test Vehicle Details: The vehicle used for drawing up these application docs was a USDM 1987 BMW 325is 2. I'm wondering what the most common way for the gauge to fail is and what steps i should take to remedy the problem? And I bought a temperature sensor which only had 1 pin!? ↳ New Members' General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; ↳ E30 Technical Help; ↳ Engine Swaps / Forced Induction General Chat ; ↳ M10 Engines; ↳ M20 Engines; I managed to test the blue temp sensor over the weekend after some tips on here and got some readings at both hot and stone cold, ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; Where to get an Outside Temp Sensor? General E30 related discussions - Please put technical questions in E30 Tech Help forum below. Uber E30. for the colors: brown sensor p/n 12621710511 is always brown or Hi All, So I was poking through the Fuel System section of the E30 Bentley manual and noticed that the tables for testing the resistance of the coolant temperature sensor only contained 3 values (14 °F, 68 °F, and 176 To determine if it's a wiring fault, you'd want to measure the resistance between the ECU and the sensor connector. I assume the output from the LS1 guage will not have the correct values for the Bmw gauge cluster. Resistance readings are within the specs ref. There should be around 40 Ohms of resistance. Take off the AFM, find a mate who vapes, and get him to blow into the rubber intake boot. I am testing the sensor at very low temps -10C. crankshaft position/rpm sensor coil resistance between terminals 1 and 2 approx. Regular e30s don't have a oil temp sender stock. Should work Bimmerforums is the preferred online BMW Forum and community for BMW owners. Comment. Price: $34. I wasn't getting a reading indicating continuity between the plug (pin 11) and the other end of the brown and white striped wire at the temp sensor. 00 I paid less than three for it. Check continuity between the C101 plug and the plug that connects to the sensor. Replaced Coolant If so read the old one when its at room temperature, see what the resistance is. You need to do this on both the power and ground sides of that sensor. To start viewing messages, select the forum that you want to visit from the selection below. I've also checked the fuel gauge and I get a resistance reading between 0 and 60 ohms depending Brake pad sensor was also randomly going on-off. 29. ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; I assume since the temp sensor (pin 44) is a NTC thermistor it would have a voltage divider as you see on the pin 44. It appears that there were several Bosch temperature sensors used in the e30 BMW. Airflow meter voltage values checked across reference point against other pins, and voltage levels are acceptable. Post Thu Jan 28, 2016 7:15 pm. 0 bar (for an "i") instead of the 2. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. 5 bar (eta) FPR in the photo. 38 V when it was warmed up and idling. Remove the sensor and see if it instead says -40. 6 k, which then goes to open. Check the wiring and the expected resistance value of the sensor. And adjusted the fan start when the temp gauge got about 2/3 of the way to the red zone. You should see resistance alternate between zero and infinite as the diff is turning. The sensor just screws in the same hole as the stock one as long as you have the right thread. year (from - to): 12. So it looks like your sensor may have been slightly out I found out it is impossible to get the E36 temp sensor to work with the E30 gauge. . Noticed the coolant temp sensor pegged after a while so pulled off the road and let it cool down a bit before trying to nurse it back home. to/2kWVtlvHow to locate and replace the coolant temperature sens I've already got the e30 temp sensor in place next to the original one. General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ The car was running fine and then the temp gauge started creeping up to 3/4 and stayed there. 1213 Oxygen Sensor Lean/Rich Detect (secondary and not present on an E30) 1223 Coolant Temperature Sensor Measures the temperature of the coolant inside the engine block. Obviously, the neatest option is to mount a BMW sensor in the side of the radiator. ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Bimmerforums is the preferred online BMW Forum and community for BMW owners. Bentley, On my 1985 BMW e30, the CHECK light always Blue temp sensor - pin#13 and ground, should read ~300-360ohms when at operating temp, and is showing the correct resistances cold and warm - at the sensor and the ECU. General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; BMW E30 Coolant Temp Sensor Replacement Keep in mind that this article is specific to my 325is, however the article applies to all BMW models in general. I run e30 M42 temp sensors. I plug in 8. I swapped in a known working air flow meter from my other e30 and still couldn't start my cabrio. Join Date: Jul 2016; Posts: 1298 #4. Moderator: martauto. The analog electrics in the BOSCH AFMs rarely ever fail, but This is for BOSCH AFM units, fitted to most E30 and other BMWs fitted with Bosch Motronic or Jetronic injection systems. Then check it when the engine is at normal temps. This is BMW parts item 13621709967, described as OEM Bosch Coolant Temperature Sensor for BMW E30, E36, E28, E34, E24, E32, that you can buy at the best price with fast shipping. 35 - 0. Are you sure the car is getting up to correct running temp? Where did you measure the resistance I've seen coolant temperature sensors in brown, blue and white, and the corresponding connector in both blue and brown. The 1 pin version is for the gauge. 1997 BMW M3. i thought the temp gauge worked off the sensor on the e30 radiator. That was causing erratic, pulsating fan behaviour that I originally thought was being caused by the faulty temp sensor. Ryan. Worked through all the threads and measured resistance changes to the infamous brown plug / temp sender and had signal connectivity up to Pin 26 on the C1 ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, I bought an 1986 325 3 weeks ago and my coolant temperature gauge is not functioning. Assuming you have the Bosch part, the white (early) and blue (late) The E36 Bentley manual shows the coolant temp sensor resistance values for the M42 that are the same as the ones for the M20B25 in the E30 Bentley manual. Check the resistance of the blue temp sensor at the ECU plug (which means taking the glovebox cover off and disconnecting the ECU), at both hot and cold. I have read that air pockets can cause the water pump to stop pumping so I worked hard to get the air out of the system. E30 Zone Camper Posts: 1157 Joined: Wed Jul 14, 2010 10:00 pm Location: Berkshire. upallnight. The ECU then E30 Classified Forums; For Sale & Wanted; Parts For Sale; This was used on many of the classic BMW motors but this particular unit came from my 1989 325is. I then tested by coolant temp sensor and noticed I would only getting a reading at all when the The OE sensor has a resistance of 540 ohms but there's no reason why a pattern part should be the same. I replaced both temp sensors”‹, blue and brown with genuine BMW ones, when I click the key the temp gauge goes from rest to the bottom of blue but that's it. air gap (sensor distance from toothed wheel) 1. The car has been sitting overnight and the blue temp sensor shows 2,970 Ohms of resistance (directly on the sensor), it is definitely around 10-15 c coolant temperatures, seems a bit high? I shall pull the DME plug and check the signals as you suggested in about 1-2 hours. I didn’t try the newspaper trick whilst it was General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ 1991 E30 325ic, AW, Black Leather, Black top, but it may be helpful in seeing why a dealer might charge quite a bit to do all these continuity checks and voltage + resistance measurements. Both sensors plug into your FI harness, Brow connector to brown sensor, blue to blue. So, if the scan shows a very cold temperature as yours is, then the circuit is open. gauges should always be at 1/2 when at operating temperature. 1224 Intake Air Temperature Sensor Your temp sensor does go through the C101 plug, so you have a bad connection somewhere. 04+/-0. does the temp sensor earth through the motor or a (to test connect 85 and 86 to each terminal on the battery, and check for zero resistance between 87 and 30) Quote; Share this post. I replaced it with an aftermarket mechanical temperature sensor and gauge which i mounted in the area underneath the air con controls. I thought this because my BMW dealer's service manager told me that the temp sensor and the AC system were somehow related. I'm about to check resistance between the 2 pins in the white and blue plug plus check for a short to ground. Continuity has been checked between the unit and ecu and all wires are good. 8. Yesterday morning I fiddled with the pigtail wires while hooked up to the printed circuit board and low and behold on came the temp gauge later to fail again. Last edited by richardodn; 12-09-2013 at 07:41 AM . If the temp. All BMW temp. Idle FAQ by Sam Chien-shin Lin. to/1UCi0ymBLUE SENSOR: http://amzn. Thanks for the comments guys and I'll keep you all updated as well as I continue, probably wont have much time till the weekend though unfortunately. Testing the O2 sensor From Roadfly User ROM: Warm the engine to operating temp (3-5min). to/2QrKC0bBMW Throttle Position Sensor: https://amzn. Return to “M30 Engines” Jump to. Here is a picture. Replace the 2002 temp gauge with the E30 gauge. Per the Bentley, it says to measure resistance at pins 7 and 8 on the 25 point ecu harness. General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; 88 m3 - lachssilber/m tech 89 m3 - alpineweiss ii/schwarz 85 323i s52 - alpineweiss/schwarz 91 m technic turbo - macaoblau/m tech Hello! Please, help! I have the E30 M20B20, Motronic 1. When I started it, the coolant temp sensor was probably on the lower third, then it started to creep up This FAE Coolant Temperature Sensor (Mfg#12621710512) fits BMW E28 528e, BMW E28 533i, BMW E30 318is, BMW E30 325e, BMW E30 325i, Changes in its resistance are used to My temp gauge worked when I first bought my E30 320i but it stopped working shortly thereafter. ICM plug pins 11 and 4 (with temp sensor plugged in): 860 ohms. the idle will stumble if the sensor falls below 120 Hey everyone, while I was diagnosing a high idle on an eta engine, I measured the following resistances on the coolant temperature circuit: Temp sensor itself (white sensor): ~2600 ohms ~@20 ºC ️ Temp sensor plug pins: 1400 ohms. Those you'd obviously still need. But Where's Im also getting a low resistance to ground indicating a short to ground. Ive checked over my wiring from the swapped motor harness and the e21 and looks to be correct. Last Update: Coolant temperature sensor 12) 11 Engine temp. This and cleaning the radiator has helped. Disconnect it, measure the resistance, reconnect it, reun the engine up to full temperature, ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 I have an m60 coolant temp sensor I'm using with megasquirt, and the resistances seem off a bit. The only way to correct the problem is to disconnect the coolant temp sensor. 1991 So I recently did a smoke test on the intake of the car and found a leak around the Throttle Body, So I replaced the Gasket for the Throttle Body, gained Torque (I know because I can now do a 6th gear uphill towards my house ), but now have a p0070 code, I checked the sensor and it works fine, get the correct outside temperature (which was 78 deg F), get Order Temperature sensor for BMW 3 Saloon (E30) 320i 125 hp easily at AUTODOC Fast delivery and low prices Discover now for yourself Resistance [Ohm]: 628, 74; Has the same colour as the orginal part: Brown; Item number 6PT 009 107-211; Our price 9,23 The OE sensor has a resistance of 540 ohms but there's no reason why a pattern part should be the same. ↳ Genuine BMW Parts Dept - Cotswold BMW; ↳ BMR Performance; ↳ VRD Classic; ↳ Traders; For Sale, Group Buys, Feedback ; ↳ For Sale - E30 Parts; ↳ For Sale - E30 cars; ↳ Wanted - E30 Parts, Cars & I. 03-17-2019, 06:42 PM. Seems to have been a faulty wire/connection in the high cluster. A cold engine needs more fuel pumped in than a warm one. If the circuit was shorted the scan would show a very high temperature. I don't recall any 3-wire sensor being a part of that, but maybe there was some other factory campaign involved that I've forgotten. com is not I also put in a new sensor. I'm about to wire up my temp guage on my E36 with LS1. Since I'm adapting an older BMW, Pretty easy to measure temperatures and resistance with boiling water, ice water, They used the same sensor in all e30's. Oil distribution block. 88 black BMW OBDII 332is dedicated track [sold] 88 BMW OBDII bronzit 332is [RIP 03/08] what if i'm running OBDII s52. The other sensor is blue - it is a temp sensor that sends data to your ECU on your FI engine (two contacts). I know there was also a sensor in the stock m10 radiator but I dont believe that's involved in the circuit I may be wrong. temp curve than the e30 sensor. 8L, BMW E30 318i M42 1. 36. Changed my coolant temperature sensor Tested resistance through the IAT sensor Tested with another set of known good coil packs Tested with another known good MAF i have a 1987 bmw e30 325is. 1987-1992 BMW 325 USDM 2. Price: $13. 750RPM-With the cover off the AFM, place one lead of Multi-Meter on the reference point, and measure DC voltage on points 1 and 2 labeled below. Managed to sort out the temp gauge and the brake pad sensor by cleaning and resoldering joints but fuel gauge still a General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; E30 Zone Newbie Posts: 156 Joined: Thu Jan 02, 2014 11:00 pm Location: Mid-Wales. There is almost no resistance. I'm also getting an open between pins 9 and 8 but my temps are in the low 40s. Between the sensor pin and a good ground (like the cylinder head) you should see high resistance when the engine is cold (something like 9K ohms) and low resistance at BMW parts 3' E30 M3 Cooling system-thermostat/water hoses There is no differentiation as to which coolant rail sensor does what. png. The Bentley manual states that the resistance First, I assume you're testing the 2 pin temp sensor used by the ECU. My car has been having symptoms of a faulty throttle position sensor with bucking, hard shifts, idle problems etc. 4 posts • Page 1 of 1. 62 volts, Coolant Temperature Sensor, BMW - E30 E28 (1986+) Original BMW sensor for reading water temperature on M42 and M20 engines. At the ecu plug you need to put a multi meter on ohms across pin 24 grd and 45 ( see e30 wiki ) motronic engine managemnet 1. That sensor is pretty easy to get and and test. Please help diagnose this stupid issue. I bet the sensor is ok and there's something wrong in the fan assembly. ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; E30 Technical, Modifications & Performance; ↳ E30 Technical Help; ↳ Engine Swaps / Forced Induction General Chat ; ↳ I just check my blue temp sensor ( thermistor ) a resistor that varies its resistance value according to temperature changes. 8L, BMW E30 318is M42 1. Rather then using moving parts, a wire or membrane monitors the airflow to provide the varying voltage signals to the ECU. It had a switch power that I stole for my The ECU sends a small current to the coolant temperature sensor. sensor is very unlikely to prevent your engine from starting, General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; e30 m3 temp sender from anybody who can get bmw parts, are you just doing a temperature sensor, not pressure? BMW parts, BMW performance / race parts and online OEM BMW parts catalog. Our professionals are here to help make sure you find the answers you need to your questions and If you need to reload firmware and reload your temperature sensor settings, the Calibrate Thermistor Tables already has the standard BMW settings. If I were doing it, I would remove the manifold. I guess the old vs new photos of the temp sensor resistance were taken at the same time, meaning the same air temp, so should have been the same resistance value. E; ↳ Feedback; ↳ Group Buys and Discounts; ↳ E30 related External Ads; Other BMW / Car Chat; ↳ Other BMW Chat; ↳ Other BMW If I remember correctly the m50 air temp sensor was slow to react and may have given a different reading at the same temp. My coolant temp sensor appears in spec for resistance though. I unplugged the tps today and didn't notice any difference in the way the car performs. Ted's House e30 BMW Car Pages: e30 Reference Information. Don't forget that the middle of the gauge is expanded and the end areas Most accurate way is to check the sensor's resistance with an ohm meter. This part is listed by BMW as BMW part number 62111268355 and is described as a coolant temp sensor for the instrument cluster in 2002, E21, E30, E12, E28, E9, Bavaria models. to/3aGKwuPBMW Coolant Temp Sensor: https://amzn. Davenotouring meaning resistance decreases as temperature increases. to/1U58lAkBMW TOOL: http://amzn. Because its design doesn't interrupt the airflow, it allows for improved air My e30 is running rich. So everything seems good. View Product. (resistance to gnd. 1280 +/- 10 ohms. They are listed for use in an E30 325i, but will work for all MSPNP-B8793 applications. 33 ohms!). sigpic 2011 335i/1995 Mercedes C220 (rallyx) The name BMW is owned by BMW AG of Munich, Germany, and by BMW (GB) Ltd in the UK. 2003 BMW 318i Temperature guage problem. Drain plug Tap the hollow housing bolt. to/2G50DHvBMW Idle Almost all thermistors are negative coefficient thermistors. Now test the resistance of each wire with the ohm meter. sensor to dash (brown connector 1-prong) and coolant temperature sensor (whitish brown, closest to firewall) are connected. you could insert the leads of a 270 ohm resistor (red violet black) into the socket to feed it a static resistance, 1/4 or 1/2 watt should be sufficient. Top. sensor, just measure the resistance between the contacts on the sensor, and then measure the resistance at your ECU or ICM. 34. Sits right at halfway when running and at operating temp 09-30-2018 Location Middlebury, Vermont Posts 2,192 My Cars 1981 320i. Temp sensor wire colours are Violet / Brown and Brown / White, as in below pic. Check it when the engine us cold. Post Cancel. 2K Probably naff all to do with the issue, but handbook says "outside this tolerance, get a I've also checked the fuel gauge and I get a resistance reading between 0 and 60 ohms depending Brake pad sensor was also randomly going on-off. When I did the swap , I didn't change my instrument cluster , I still have the analog old school cluster of the m20 . sensor is very unlikely to prevent your engine from starting, General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; I also temporarily removed the temp sensor when the car was cold. Aftermarket Replacement # 61 31 8 361 787, 24 Month Warranty. None were fitted to any E30 model, but they were installed on contemporary engines, starting with the M50. 2 Check the blue temp sensor resistance at the ECU plug. I then unplugged the front brake sensor and I still get a short to General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ 【TOP DEAL】⚡️ Order Temperature sensor for BMW 3 Saloon (E30) 325i 170 hp easily at AUTODOC Fast delivery and low prices Discover now for yourself E30; Fuel supply: Intake Manifold Injection/ Carburettor; Engine aspiration type: Naturally Aspirated Engine; If anyone is curious without wanting to cut up the rubber boot on their coolant temp. Repair and replacement of the temperature sensor. 22k ohms at 59 degrees Farenheit, as measured at the current temp in my garage. 1. Now check the center terminal and 1993 BMW E34 525i SE Touring 1989 BMW E30 320i SE Touring 1986 Porsche 944 Lux 1982 Porsche 924 Lux 1979 Porsche 924 Lux. The problem is that the E30 gauge Hello Does anyone know what resistance the 3 temp sensor in the rear of the engine of a m70/s70 should have? 1990 bmw m3 e30. To control the fuelling, the See more For a given sensor you can determine the constants by getting the resistance at two temperatures. Because the e36 sensor has a different resistance and resistance vs. So I took it off and Overview. Post Sat Jul 19, 2014 1:00 pm. 3mm (0. Btw, the sensor contains a thermistor which is a resistor that changes resistance as its temperature changes. Ok thanks, so the black one closest to the fender dont have anything to do with the DME? The sparkplugs is dark and the car jump on low rpm and misfire. This has been covered many times. When driving today the temp at the temp sensor was in the 180s and the temp gauge needle at the half mark. Remove each spark plug lead and carefully wipe them down to remove any oily residue. Jack up the rear wheels, unplug the sensor, measure resistance across the terminals of the sensor while slowly turning the rear wheels. General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; Resistance difference probably. resistance is all over, you can't stick a resistor on. General E30; ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; ↳ E30 Videos; The DME is definitely not getting signals from sensors or to sensors. This Genuine BMW Temperature Sensor (Mfg#12621710511) fits BMW E28 528e, BMW E28 533i, BMW E30 318i M10 1. That said, which in turn causes the sensor to build up internal resistance, causing it to eventually fail. should read 2100 ohms when cold, 70f, and btween 250 to 400 ohms at operating temp, 176f, which are typical values for all thermistors. Hello I'm going to be fitting an M44 into my E30 but will have to use the M40/2 brown temp sensor for the gauge cluster. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model Can anybody tell me where to find the air intake temperature sensor on a 1990 325i ? Any help much appreciated. A handy person with their own meter might be able to handle it Where location on air intake temperature sensor BMW 335d Help please . Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; 24V Engine Swaps; M50/52 & S50/52; If this is your first visit, be sure to check out the FAQ by clicking the i just ordered the brwon top M20 sensor from bmw and picking it up today. Looking for some info on the wiring to the temp gauge. An example is the ambient air temperature sensor in an E46. Facts: one test you can do in situe is get a multimeter and put it between the sensor connector tab and the body of the sensor on resistance. 16. 5L M20B25 with a manual transmission. 0 +/- 0. 1 and 1. Klein Tools Multimeter: https://amzn. Check the resistance with an ohm meter if you have one, or try a new one, they are cheap. Coolant temp sensor could be suspect too, as well as cold start injector, One for the dash gauge which is brown, and the sensor for the ECU which is blue. As upallnight says, the front one is the coolant temp sensor for the ECU. Comment Today's Posts; Member List; Calendar; Forum; E30 Technical Forums; Engine & Drivetrain; M20; If this is your first visit, be sure to check out the FAQ by clicking the link above. If you're lucky (or have a non-genuine radiator), you may have a blanking plug that can be removed, and a BMW sensor fitted in BMW E30 3 Series Idle Speed Troubleshooting Now, connect the multimeter between the two outer terminals on the valve and check for resistance. That works out correctly, but I was wanting to see if anyone has already measured an upper, and lower known value for this sensor to plug into easytherm. The E30 uses a BOSCH AFM unit, also used in many other BMWs with Motronic or Jetronic injection systems. I was just unsure weather I can just cut the brown/violet wire off the original one and move it to the e30 sensor or does it have to stay there, and wire in a completely separate wire to the e30 sensor. An infra red Coolant Temperature Sensor/Sender Wiring for 1986 E30 with S52 11-14-2023, 07:19 PM. In this post, I want to discuss afm testing. Coolant Temperature Switch - 61318361787. ) 12 Throttle switch Blue temp sensor resistance checked at ecu and values are acceptable. The m52 sensor was very quick to change resistance with temperature changes. I’ve tried TONS of stuff vacuum, iac, spark, all that. Do this step one by one so you don't mix up the A common glitch on the BMW E30 3 Series is erratic engine idle constantly surging between 800 and 1800 RPM. The issue im having is that Realised the blue temp sensor was not screwed in properly and sticking out about 10mm! Checked the resistance it at the ECU and at the sensor itself with a multimeter and it was showing 4300 ohm when cold. A reading of -40 indicates a completely open circuit, and a reading of +122 indicates a short circuit. 15. There's many different places you can place a sensor and it is up for debate which is the best location. Putting too little fuel into a cold engine will prevent the engine from starting, while putting too much fuel into a warm engine will lead to rich running, high carbon deposits and possibly pre-detonation of the fuel (pinking). Resistance measurements send voltage into a circuit and check the Have you taken any readings from the 4 abs sensor wires where they feed into the ecu, I temp wired in a complete abs loom and turned the key and the light went out on the new loom, ↳ E30 BMW Chat; ↳ E30 Builds / Restorations; ↳ Members' E30s; New blue temp sensor fitted. varies with temp. Based on that, I am going to go with the assumption that both Does anybody know at what resistance the coolant temp sensor triggers the dme to turn the fan on faster? IIRC, Normal operating temp (i. but an open circuit blue temp. They look like the same typical VDO size gauges, so you could easily swap them. The resistance of the engine coolant sensor changes depending on the temperature of the engine. Brianmoooore E30 Zone Team Member Posts ↳ Genuine BMW Parts Dept - Cotswold BMW; ↳ BMR Performance; ↳ VRD Classic; ↳ Traders; For Sale, Group Buys, Feedback ; ↳ For Sale - E30 Parts; ↳ For Sale - E30 cars; ↳ Wanted - E30 Parts, Cars & I. If you've got this resistor you'll be adding 500 Ohms to whatever reading you got at the sensor. BMW List price is around $500. You should see about 15K on each. kfeqdf fdzd lwscnfw zrbn fwxehl pcqhiws rbly ywuwz mem gvc