Quits running

Tiny
ROGER IFLAND
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • V8
  • 187,000 MILES
98 chev silverado z71 5.7ltr. Quits running only if the air temp is 90* or higher. Sits 10 - 30 mins. Restarts runs fine but could quit anytime if air temp over 90*, have replaced many parts and am out of ideas. Could be idling or going 70mph. Can supply list of parts replaced. Plz advise. Rifland
Tuesday, January 18th, 2011 AT 12:57 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
You need to scan the engine for codes to see if there are any. However your truck isone that had a bad harness going to the fuel pump and the cure was/is a new fuel pump with a different connector as well as a 12" piece of harness that had to be wired in the old harness. When it fails again check your fuel pressure as it should be 60-66 psi. Also check yoru cranksensor for ohms asit mightbe getting hot and ohms areto high so it quits working.
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Wednesday, September 2nd, 2020 AT 5:37 PM

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