Engine will not start and run?

JPYAZZIE

MEMBER
2006 CHEVROLET SILVERADO
5.3L
V8
4WD
230,000 MILES

My truck runs for about five minutes and shuts off and will not restart until after a few hours, then it runs about another five more minutes. I scanned an no trouble codes. It has a new fuel pump the pump has about at less 55 psi. Thinking it might be the crank sensor unplug the pig wire check to the sensor and seem to be okay. Wiggle the the wire a bit and plugged back in an still the same shuts off with no trouble codes. Any other options I could try? Thanks.

Monday, February 26th, 2018 AT 3:28 AM

3 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Good morning.

When it will not start, test the fuel pressure at that time. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds? Also, when it will not start, see if the tachometer moves up a little when you try to start it.

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

Please run down this guide and report back.

Roy

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Monday, January 25th, 2021 AT 10:09 AM

JPYAZZIE

MEMBER
2 POSTS

Fuel pressure is good. Also tried starting fluid still no start. I change the crank sensor still no start too and no trouble codes also.

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Monday, January 25th, 2021 AT 10:09 AM

ASEMASTER6371

MECHANIC
52,796 POSTS

OK, did you check what I told you? I did not tell you to replace the sensor, we wanted to see if there was a signal generated from the sensor to the pcm.

What was the fuel pressure?

Roy

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Monday, January 25th, 2021 AT 10:09 AM