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Re: 535 running very poorly PLEASE HELP (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by JamesM on September 24, 2000 at 15:02:59:

In Reply to: 535 running very poorly PLEASE HELP posted by Sari on September 24, 2000 at 13:48:26:

What happenes, specifically when the problem arises? Does the car stumble badly, smell rich, does the coolant temp rise or fall?

Sounds too intermittant to be a serious vacuum leak (easily visible to the Bosch tech). And if it were an electrical problem, it would most likely kill the car on the spot, not run poorly, it would just die. Maybe running rich all of a sudden? Check to see if the coolant temp decreases before and during the event. Also, open the window and smell. If it stinks like half-burned fuel, you may have a faulty cold start valve or sticking injector. Check the plugs for any funny residues/deposits or if any seem significantly different from the others.

Good luck! Let us know what you find out.

James
james_535@yahoo.com

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