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displaying posts 1 to 6 of 6
| Author | Subject: Intake Air temp problem |
 Diablo_GTI6PT
Newbie  Location: Moreira de Cónegos Registered: 09 Apr 2020 Posts: 11 Status: Offline |
Post #1
Hi guys, im with a "problem" on my 6.Im getting a bad reading from my iat sensor.. With the car completely cold the diagnostic device is reading 85°C wich is stupid... I have tried a new sensor and the same happens !! No fault codes are shown in diagnostic device.. Does it ever happen to anybody ? What could it be ? ________________________________________ 97" Diablo red GTI6 |
 Posted 9th Apr 2020 at 22:09
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deeturbo
Regular  Location: Leighton Buzzard Registered: 22 Feb 2003 Posts: 283 Status: Offline |
Post #2
I would check the wiring loom and the connections. There might be corrosion on a pin in a connector or something.More that likely the cable could be shorting to ground. Temperature Resistance 10°C - 3530-4100 Ω 20°C - 2350-2670 Ω 30°C - 1585-1790 Ω 40°C - 1085-1230 Ω 50°C - 763-857 Ω 60°C - 540-615 Ω 80°C - 292-326 Ω 90°C - 215-245 Ω Check continuity between pin 1 on the sensor side and pin 29 on the ecu side. Then plug the sensor in and see what resistance you get on the pin 29 on the ecu plug. |
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Posted 10th Apr 2020 at 10:20
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Ben_W
Formerly gpm  Location: Lutterworth Registered: 01 Sep 2007 Posts: 2,941 Status: Offline |
Post #3
I'd also check resistance across the sensor and compare to expected factory values.This will tell you if it's sensor or something else (wiring). Given its a new sensor, I doubt both the old and new sensor would be faulty. Not to say it wouldn't be that, but I'd be very surprised. If it's not the sensor, test the continuity on the wiring, which I assume goes back to the ecu ________________________________________ Cherry Red Rallye .... On going OEM spec restoChina Blue GTi6 .... Weekend toy Black 208 GTi .... Wife's car now Silver BMW 550i.... The executive missile |
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Posted 10th Apr 2020 at 10:10
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deeturbo
Regular Location: Leighton Buzzard Registered: 22 Feb 2003 Posts: 283 Status: Offline |
Post #4
Some good information here to help fault find.http://www.306gti6.com/forum/showthread.php?id=134863&page=last |
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Posted 10th Apr 2020 at 10:23
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miki4
Regular  Location: Cologne Registered: 09 Nov 2015 Posts: 390 Status: Offline |
Post #5
If you can't find corrosion or broken wiring, to isolate the fault check the resistance between the pins in the connectors of the sensor and the ECU. Pin 1 of the IAT goes to pin 29 on the ECU. Pin 2 is ground and goes to pin 17 on the ECU and also to pin 2 of the MAP sensor. According to Peugeot schematics. |
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Posted 10th Apr 2020 at 11:18
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Diablo_GTI6PT
Newbie Location: Moreira de Cónegos Registered: 09 Apr 2020 Posts: 11 Status: Offline |
Post #6
Thank you very much guys for your replies !!The car is going to the paint shop today so when it gets back i will try to find the problem.. ________________________________________ 97" Diablo red GTI6 |
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Posted 10th Apr 2020 at 11:25
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