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Cold Starting Problems 700 1989

posted by  fireman101 on  Tue Dec 9 19:02 CST 2003
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I'm having cold starting problems with a 1989 740GL. I have checked as many electrical and vacuum connections as I can find; no blown fuses; and the cold start sensor checked out for resistance, but I'm not getting any voltage to the cold start sensor or valve.

Also, the ECU does not display any codes at all. Not even a 111 (no codes detected).

It does seem to start somewhat easier with the air mass meter disconnected.

Runs great when it's warm, but it's getting it there that's the problem.

I'm thinking that the problem is in the ECU. Is there any way to check to be sure? Are boneyard parts reliable? And, if so, how close do I need to be for this year, make and model?

Please keep in mind I'm just a retired firefighter with only self taught mechanical experience doing a favor for a friend.

Thanks in advance for any help and advice you are able to give.





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