Engine shuts off when car has been driven more than an hour

2006 PONTIAC TORRENT
178,000 MILES • 3.4L • V6 • 4WD • AUTOMATIC
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CSIGMON95
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Can only be driven for an hour and a half to two hours before shuttering and shutting off. Then it won't restart unless you wait a few hours. After waiting it starts right back up and again can only be driven the same time frame before shutting off out once more.
Jun 23, 2019 at 5:58 AM
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ASEMASTER6371
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Good morning,

When it does not start, you need to test for fuel pressure and spark to see which area has the issue.

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Try spraying some starter fluid into the air filter and see if it starts and stall. That will tell us if it is fuel delivery or spark.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Roy
Jun 23, 2019 at 6:12 AM
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CSIGMON95
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Also may be worth nothing that I've replaced all spark plugs, 3 O2 sensors, and the MAF sensor. Still having the issue.
Jun 23, 2019 at 6:14 AM
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ASEMASTER6371
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Got it.

All of them would have no effect on the issue.

Roy
Jun 23, 2019 at 6:19 AM