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1997 Pontiac Bonneville will not stay running

Tiny
GENO8BALL
  • MEMBER
  • 1997 PONTIAC BONNEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I have replaced the crank sensor, ignition module and had the fiel pump checked, but it still won't start after it has been running for 20 mins. What else cuold be causing the problem? Gene
Monday, April 26th, 2010 AT 6:57 AM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Has the check engine light come on?
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Monday, April 26th, 2010 AT 8:54 AM
Tiny
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No, the check engine light has not come on.
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Monday, April 26th, 2010 AT 9:58 AM
Tiny
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Gene:
I need to know if you are getting spark and fuel to the engine. See if it will start with starting fluid.

Let me know what you find.

Joe
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Monday, April 26th, 2010 AT 11:22 AM
Tiny
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Yes i'm getting spark and fuel. I'm wondering tho if theres a in-line fuel filter that might be partially plugged. Gene
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Monday, April 26th, 2010 AT 12:39 PM
Tiny
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If you are getting both, either you have low fuel pressure or a weak spark. Are you getting a snapping hot blue spark? Have you checked fuel pump pressure? Have you checked to make sure the injectors are getting power?
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Monday, April 26th, 2010 AT 12:53 PM
Tiny
GENO8BALL
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Yes to all, but I had Goodyear check the fuel pump again and after it was running for awhile the fuel pressure drop off. So now i'm going to the pump. Is there a trap door behind the back seat to get to it or do ihave to drop the tank? Thanks, Gene
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Tuesday, April 27th, 2010 AT 12:40 AM
Tiny
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Honestly, I can't remember on that year. I would pull the seat first to check. However, for some reason I don't think there is.

Let me know what you find and if it takes care of the problem.

Joe
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Tuesday, April 27th, 2010 AT 11:42 AM
Tiny
GENO8BALL
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  • 6 POSTS
Joe, I sure will. I won't be able to do it till Sat. But as soon as i'm done i'll let you know. Thanks for all the help, Gene
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Tuesday, April 27th, 2010 AT 12:28 PM
Tiny
GENO8BALL
  • MEMBER
  • 6 POSTS
Joe, I had to drop the gas tank. There wasn't a place behind the back door to get to the fuel pump. But while I was doing that I change the fuel filter and the sending unit. It running great now. Thanks for the help, Gene.
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Saturday, May 1st, 2010 AT 9:02 PM

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