No spark

2000 CHEVROLET EXPRESS
350,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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BARTON K
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  • 2 POSTS
Van runs fine for about an hour then no spark. after a few hours starts right up and runs about an hour again. Endless cycle.
Aug 2, 2019 at 12:16 PM
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KASEKENNY
  • CERTIFIED EXPERT
  • 18,907 POSTS
Hi Barton,

This sounds like a crank sensor issue. Here is a guide that walks through the symptoms of a cranks sensor issue. Pay particular attention to its intermittent operation when it gets hot.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Attached is the procedure to replace it if you find it is the issue. Thanks
Aug 2, 2019 at 4:31 PM