Intermittent starts, now will not start at all

2004 OLDSMOBILE ALERO
69,000 MILES • 3.4L • 6 CYL • 2WD
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RWOLLIN
  • MEMBER
  • 1 POST
Car was starting sometimes but not always.
I put a timing light on it and cranked it but got no flash fault. Code reader says no information stored. But I had disconnected the battery Hoping to reset the commuter still no luck. Also, swapped fuel pump relay with daytime driving light relay, still will not start at all now.
Jun 25, 2018 at 5:06 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon.

Okay, it sounds like you have no spark. There are several possibilities. Crank sensor, ignition module or wiring issue.

You should also check for fuel pressure as well.

Disconnecting the battery does nothing. It will not cure any issue.

Roy

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system
Jun 25, 2018 at 7:04 AM
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