No spark

BARTON K

MEMBER
2000 CHEVROLET EXPRESS
5.7L
V8
2WD
AUTOMATIC
350,000 MILES

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.

Friday, August 2nd, 2019 AT 12:16 PM

1 Reply

KASEKENNY

MECHANIC
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

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