Stalls while driving

1999 PONTIAC BONNEVILLE
130,000 MILES • 3.8L • V6
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JETRODDER
  • MEMBER
  • 1 POST
First my air blowers wouldn't work. Now when I'm driving after it warms up i can drive long distance stop for 30 minutes start again and the RPMs move down while idling also driving along fine when i slow down sometimes it justs stalls. put in neutral starts right up then might do this a couple of times. when i get home let it idle and its fine doesn't stall. Thanks a lot.
Apr 11, 2021 at 11:02 PM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
This sounds like an air intake issue or possible sensor issue like the MAP. Let's start with checking for codes so that we don't waste time on something else if we have a code that will help with this.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is a guide that will help with this:

https://www.2carpros.com/articles/engine-stalls

I would suggest starting with the fuel pressure when this stalls just to make sure we don't have an issue with that.

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

Once we know the fuel pressure is okay when this is happening then we can move onto the air side of the engine which is a little more difficult so let's rule out fuel to start and go from there. Thanks
Apr 12, 2021 at 11:51 PM
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