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Question

2000 BMW 740. Intermittent problem. Cranks with no start. After several seconds, I turn key off and then try again. May take several attempts. Getting to be more frequent problem.
No difference hot or cold.
Occasional stalls, even @ 70mph. This problem started at about same time.
No codes set via OBDII.

Submitted: 605 days and 1 hours ago via YouFixCars.
Category: Car
Value: $15
Status: CLOSED
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Optional Information

Optional Information:
2000 BMW 740iL V8, gas

Already Tried:
Cleaned throttle position sensor electrical connections and throttle plate/bore

Accepted Answer

Watch your tach when it stalls. If it drops out quickly just before or as it stalls then you likely have a bad crankshaft sensor. They will also cause a hard start due to lower voltage output so I think that is what is ailing you. When they fail they will not set a code.

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Expert: Ted G.
Pos. Feedback: 100.0 %
Accepts: 
Answered: 3/27/2008

ASE Certified Technician

20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness

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