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What would cause a car to stop starting after being shut off? by Additivewalnut
Started on: 12-15-2023 09:33 PM
Replies: 3 (46 views)
Last post by: davylong86 on 12-27-2023 10:24 PM
Additivewalnut
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Report this Post12-15-2023 09:33 PM Click Here to See the Profile for AdditivewalnutSend a Private Message to AdditivewalnutEdit/Delete MessageReply w/QuoteDirect Link to This Post
I'm fixing my mother in law's 2000 Pontiac Montana with a 3400 in it. For some reason, if you disconnect the battery, wait a few hours, then reconnect it, it runs perfectly. But the moment you shut the car down, it will crank but not start unless you disconnect, wait, reconnect. I have no idea what would cause that at all. Fuel pump is priming, I'm gonna see what the pressure is tomorrow morning, along with checking to see if spark is present. Figured I'd ask if anyone has ever experienced that before or has any ideas on what could cause it.
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Additivewalnut
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Report this Post12-15-2023 10:28 PM Click Here to See the Profile for AdditivewalnutSend a Private Message to AdditivewalnutEdit/Delete MessageReply w/QuoteDirect Link to This Post
Checked, spark is present, fuel pressure good, injectors are not firing
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Additivewalnut
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Report this Post12-17-2023 06:46 PM Click Here to See the Profile for AdditivewalnutSend a Private Message to AdditivewalnutEdit/Delete MessageReply w/QuoteDirect Link to This Post
Bad PCM was the answer! For some reason GM thought it would be cool to put the PCM inside the airbox and let it get covered in water.
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davylong86
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Report this Post12-27-2023 10:24 PM Click Here to See the Profile for davylong86Send a Private Message to davylong86Edit/Delete MessageReply w/QuoteDirect Link to This Post
Wow that's a insane place to locate that. Glad you got it figured out.
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