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1997 Pontiac Bonneville engine cranks but will not start

Tiny
DOUGYEHLE2000
  • MEMBER
  • 1997 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
My 1997 Pontiac Bonneville will not fully start when it is cold out. Early mornings or late evenings. I cranks with plenty of power. Later in the day when it warms it will start with no problem. Do you have any ideas?
Saturday, February 28th, 2009 AT 12:26 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, I'd just do some basic tests. Can you check for codes? Some of the national brand autostores will check codes for free.

When the problem occurs, have a helper crank it, while you check for spark at the plugs and injector pulse. Also use a gage and check fuel pressure. It's a start.
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Saturday, February 28th, 2009 AT 1:36 PM
Tiny
DOUGYEHLE2000
  • MEMBER
  • 2 POSTS
Thanks
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Sunday, March 1st, 2009 AT 10:42 AM

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