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M5 stalls, yet another update (archive)
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Posted by Mark on June 26, 2001 at 19:58:46:

In Reply to: Re: m5 stalling. posted by Frank on June 24, 2001 at 09:10:13:

I thinking the problem must be main relay. Spark goes away, but there is still voltage to coil. Definately seems to be temp. related. When car does run, it runs great but main relay seems to get very hot? I'll change it and see what happens. Thanks everyone for the help.

Mark



It seems that after it goes into closed loop thats where the problem begins? Check the cool temp switches as well as vac leaks. Pull on some hosses as well as intake boots for cracks. Check o2 output. Good luck get back to us.
Need help!

88 M5 starts cold, runs fair, after about 1 min it either smoothes out or stops dead. This problem has gotten worse over past 2 weeks. I was thinking fuel pump was on the way out, but this was wrong ($113 bad diagnosis by lazy mechanic who did not check fuel pressure after car stalled (me!)) Anyway, tonight I will dig into this... Have tools and lots of experience, but I would appreciate some advice from anyone who has experienced same. TIA, Mark





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