Shuts off when it gets warm

Tiny
PETO
  • MEMBER
  • 1991 CHEVROLET LUMINA
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 138,000 MILES
Driving to work two days in a row now it gets warm and then it shuts off. It acts like it wants to start if I know I'm getting spark oh, but it's like I'm not getting enough fuel. I put new fuel tank fuel pump in last night oh, and it did the same thing to me today. Any help would be much appreciated.
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Thursday, August 15th, 2019 AT 6:04 AM

7 Replies

Tiny
KASEKENNY1
  • EXPERT
Peto,

Can you measure the fuel pressure when this happens? Just hook up the fuel pressure gauge and tape it to the windshield and see what it does when it stalls.

Here is a diagram of the connection point. Thanks
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Thursday, August 15th, 2019 AT 3:21 PM
Tiny
PETO
  • MEMBER
I will have to get one tomorrow to be able to test it.
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Thursday, August 15th, 2019 AT 5:00 PM
Tiny
KASEKENNY1
  • EXPERT
Okay. Just let me know what you find. I would like to eliminate fuel but that is what this sounds like and this is the best way to do that. Even when the engine shuts off, you should have pretty constant fuel pressure for a little while.
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Thursday, August 15th, 2019 AT 6:22 PM
Tiny
PETO
  • MEMBER
Okay. It seems like it does it when the engine gets good and warm. Thanks for your assistance.
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Thursday, August 15th, 2019 AT 6:28 PM
Tiny
KASEKENNY1
  • EXPERT
Okay. Again, we need to completely eliminate fuel and we can do that with good pressure. It could still be a regulator but we will get to that later because without good steady pressure, nothing else matters.

I will wait to hear back with the pressure. Thanks
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Thursday, August 15th, 2019 AT 6:36 PM
Tiny
PETO
  • MEMBER
It is running about 40 to 45 PSI cold. I need to get the pressure tester to not leak before I run it and it gets hot and burn my beard.
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Friday, August 16th, 2019 AT 7:15 PM
Tiny
KASEKENNY1
  • EXPERT
Okay. If that was key on and engine off or just idling. Then that is okay. However, you said that this happens when it gets hot. So yes, we need to make sure this is not leaking so we can see what the pressure does when it shuts off. Thanks for the update. Let me know what you find. Thanks
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Saturday, August 17th, 2019 AT 5:11 PM

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