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Old 07-04-2019, 02:56 PM   #1
djafactor
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M52 Temp gauge not working

Just finished my swap. M52, M42 rad, e30 brown top sensor with single wire plug, M40 cluster. I see the temp click on with the ignition but the needle doesnít move. I plugged into the diagnostic port and the temp is coming through so my wiring must be good right? The thermostat is opening normally so Iím not sure what to do next. All other gauges are working fine.

Any help is much appreciated


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Old 07-06-2019, 07:55 AM   #2
djafactor
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Was able to track down the problem. Somewhere there was a break in the connection from the brown top temp sensor to the C101 connector. Ran a new wire and boom!


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Old 07-12-2019, 05:24 AM   #3
Northern
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Quote:
Originally Posted by djafactor View Post
I plugged into the diagnostic port and the temp is coming through so my wiring must be good right?
FYI for anyone else with this problem, the temp the ECU reports over OBD2 comes from the other temp sensor.
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Old 07-12-2019, 06:18 AM   #4
djafactor
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Quote:
Originally Posted by Northern View Post
FYI for anyone else with this problem, the temp the ECU reports over OBD2 comes from the other temp sensor.


Yes, I plugged my car into a diagnostic computer and was getting appropriate temp data. Thanks


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'11 BMW 1M
'97 BMW 328i
'89 BMW 325i w/M52 (Race Car)
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