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Old 08-26-2009, 03:02 PM   #1
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Default 96 bonneville still stalling.. update, any help??

Hello there bonne friends..

So I have done way to many things and the car is still stalling on hot start ups.
recap on what it does: after warmed up and hot I shut off, will restart within 5 min fine, or after about 1.5 hrs but anywhere after 5 min up to the 1.5 hrs It will start stall start stall.. run rough, can keep it going driving 2 footed then after about 1 mile its fine.

Parts replaced thus far
mass air flow sensor
throttle pos. sensor
air idoler sensor
engine coolant temp sensor
crank position sensor
harmonic balancer
spark plugs
plug wires

I had the coil packs tested, all are fine
I had the modual under the coil packs tested its ok also, was some corrosion but I cleaned it up 200 miles ago.

I have put 700 miles on the car since i got it and it drives fine, no check engine lights at all except when I bought it and that was the mass air flow sensor at 57,900 miles, now I have 58,700 miles on it..
I have not instaled the fuel pressure regulator or a new fuel filter yet, but those are the next steps.
any other suggestions?
thanks.
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Old 08-26-2009, 04:49 PM   #2
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Hot problems tend to be electrical, I would suspect a cracked coil. Inspect them very closely for any thing that looks like a scratch. Also, test the coils when they are hot and see if there are any changes in the readings.
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Old 08-26-2009, 05:23 PM   #3
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thanks for the info.. I had the ignition modual tested right after the probelm occured yesterday, tested 2 times and good both time. I could retest the coild I guess.. I will repost when I figure it out.. I just replaced the fuel pressure regulator today and have not had time to see if that fixed it.
thanks.
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