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Old 12-31-2008, 05:01 PM   #8
and0b
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Re: Lumina 93 - V6 3.1

Quote:
Originally Posted by jeffcoslacker
Sounds pretty symptomatic of a bad Ignition Control Module or Crank Sensor that quits working once heat-soaked, and functions again once cooled off...both are known for that.

But the code 32, if I remember right, is for EGR...the ECM opens the EGR valve when you take your foot off the gas, then reads manifold vacuum. If the value is out of range, it assumes there is an EGR malfunction. If the EGR sticks open, it will cause it die. If it stays open, it will not start.

It could also be the EGR getting stuck open if it seems to correspond to you letting off the throttle when it dies out...

Sometimes you can tell, with a stuck open EGR they will start if you are giving it a LOT of gas (like 1/2 throttle or more)...this overcomes the vacuum leak, the engine will not idle but will run at high rpm if kept throttled...the effect is it feels kind of like trying to start a flooded engine...

You can try that, see if it will start (or at least try) that way. If so, I might suspect the EGR.

Sometimes tapping gently on the EGR valve when stuck will make it snap shut, and the car will act normal again until the next episode. Tap it lightly with a wrench or small hammer (don't break it!) on the part where it joins the intake...you'll sometimes hear a faint click from it as it seats, and the engine will start right up...

Thank you for advice - I will try it next time.
Andrew
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