Shuts off when it gets warm

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.

7 Replies

KASEKENNY

MECHANIC
18,907 POSTS

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

PETO

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4 POSTS

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

KASEKENNY

MECHANIC
18,907 POSTS

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

PETO

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4 POSTS

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

KASEKENNY

MECHANIC
18,907 POSTS

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