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1989 Oldsmobile Ciera Starting problem with my 1989 Olds Cu

Tiny
ERNIEMARY
  • MEMBER
  • 1989 OLDSMOBILE CIERA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,000 MILES
I am having an intermittent problem with my 1989 Olds Cutlass Cierra.

It starts fine the 1st time but, will only start again after you turn the engine off and allow it to sit for about 20-30 mins.

If you try to restart it before it sits for 20-30 mins, it will crank but not start.

My mechanic replaced the cranks sensor, but the problem persists.

My mechanic also ruled out the fuel pump as the source of the problem.

The car has a 3.3L V6 with about 90K miles on it and the spark plugs only have about 3000 miles on them.

Could the problem be related to the engine coolant temperature sensor or the electronic control module?
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Wednesday, June 2nd, 2010 AT 10:21 AM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
HAs it been determined what is missing when the vehicle won't start, this will narrow down the possibilities. When the vehicle is anticipated not to start, a fuel pressure gauge, a means of checking spark at at least one plug wire, and an injector test light should be in place. This will tell you if you are missing spark, fuel pressure, or fuel injector pulse. The coolant temp sensor should not cause a no start, the engine control module could, but it could be influenced by something like a bad injector(s).
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Wednesday, June 2nd, 2010 AT 10:34 PM

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