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intermittent no start 700 1990

posted by  guysaab on  Thu Mar 28 18:32 CST 2002
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last visit: Mon Jun 23 13:24 CST 2014
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I have a 90 740 GL (8V, Non turbo) that on occasion, when the car has been running and has been turned off for a few minutes, refuses to start for 5-30 minutes. It'll crank just fine and it has been very intermittent but lately seems to be showing off more. The problem seems to be no spark. Twice now when the problem has presented itself, I've been able to pull the first plug wire and check. Warmer temperatures seem to aggrivate the situation.
Any similar experiences or theories where I should investigate first?
Thanks in advance.

-Brent








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intermittent no start 700 1990

posted by  jbowden1 on  Sat Mar 30 09:34 CST 2002
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I had the same problem with my 89Turbo Wagon. Occurances seemed to be around 78 degrees f. The fuel injector relay located high behind the passengers left kick panel was the culprit. It appeared to be a spark problem, but with fuel injection no power no fuel. Jim








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intermittent no start 700 1990

uid 55's pic
posted by  john sargent on  Fri Mar 29 04:14 CST 2002
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last visit: Wed Oct 22 09:07 CST 2014
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It is probably a bad RPM sensor, which is mounted to the engine in a recess in the bell housing just under the distributor. The original RPM sensors were colored coded yellow. The upgraded ones are color coded white.







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