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Old 07-07-2010, 05:21 PM   #1
hellah fresh
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97 Boniville Engine warms up then hard to start

I have a 97 Pontiac Boniville that when i start i can drive it all day until the engine warms up and then it when i park it and come back to start it up later it will crank. I have to let the engine cool off so i can start the car backup and drive it. I already replaced the ignition modual on the car. Does anyone here have an idea on what is causing it to not start when the engine is hot?
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Old 07-07-2010, 10:19 PM   #2
HotZ28
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Re: 97 Boniville Engine warms up then hard to start

More than likely the crank position sensor (CKPS) has become heat sensitive. I would replace it.
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