Engine will not start and run?

Tiny
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

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
Was this
answer
helpful?
Yes
No
Monday, January 25th, 2021 AT 10:09 AM
Tiny
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.
Was this
answer
helpful?
Yes
No
Monday, January 25th, 2021 AT 10:09 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
Was this
answer
helpful?
Yes
No
Monday, January 25th, 2021 AT 10:09 AM

Please login or register to post a reply.

Related Engine Not Running Content

Sponsored links