Runs then shuts off

Tiny
DWIGHT645
  • MEMBER
  • 1990 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 230,000 MILES
When running will just shut off and start right back up. Showing code 42. Put new wires, plugs, and fuel filter.
Friday, February 9th, 2018 AT 7:22 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
42 - Electronic spark timing (EST) circuit grounded.

This fault code refers to the white wire between the distributor and the engine computer. Inspect that wiring harness, particularly where it runs through the firewall. You may have luck finding the cause by flexing the harness while the engine is running.
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Friday, February 9th, 2018 AT 3:27 PM

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