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Acceleration only when coolant temp sensor disconnected but sensor is good 200 1985

posted by  Big Harry on  Mon Oct 27 04:40 CST 2008
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last visit: Sun Sep 21 11:06 CST 2014
[RELATED]

The popping sound would indicate a very lean condition on a cold start which in turn indicates that the ECU is not compensating for the cold coolant temp. Since you have replaced the ECT without any results, and disconnecting the wire allows you to run, I would suggest checking the length of the wire for a bare place where it may be grounding to the chassis. If you have a spare ECU, you can swap it out and see if it has failed also. My bet would be in the wiring insulation.

Regards,
--
Will Dallas, www.willdallas.us, www.willdallas.org, www.willdallas.com, www.dallasprecision.com 86 245 DL 222K miles, 93 940 260K miles, 88 765 GLE 152K miles






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