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2000 Pontiac Bonneville car shuts off after running for 5 m

Tiny
MYBIGFAMILYOF9
  • MEMBER
  • 2000 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 11,000 MILES
Hello, my pontiac bonneville ssei starts then runs for about 5 minutes then shuts off. We then try to start it but it sounds like it wants to backfire and wont stay on. We replaced the battery and fuel filter, do you think it could be just bad gas?I went to new gas station the day before problems started. It seems like it shuts off when it warms up. Can you please help?Thank you
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Friday, December 26th, 2008 AT 11:58 PM

8 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lets do this check the fuel pressure make sure its within specs-if okay clean out the idle air control valve. Will it continue to run as long as your giving it gas?
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Saturday, December 27th, 2008 AT 5:14 AM
Tiny
MYBIGFAMILYOF9
  • MEMBER
  • 6 POSTS
Yes it struggles though and still shuts off. It appears to be a little smoke coming from down under where you put the oil at.
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Saturday, December 27th, 2008 AT 8:28 AM
Tiny
RASMATAZ
  • MECHANIC
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Check the fuel pressure with a fuel pressure gauge designed for your system and check the 2 components I've mentioned earlier then report back with some results.

BTW do you have a check engine light lit and when was the last tune-up?
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Saturday, December 27th, 2008 AT 8:33 AM
Tiny
MYBIGFAMILYOF9
  • MEMBER
  • 6 POSTS
It was tuned upa few months ago, how do I check the fuel pressure? No engine light came on.
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Saturday, December 27th, 2008 AT 8:40 AM
Tiny
RASMATAZ
  • MECHANIC
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Find the fuel pressure test port and hook it up then turn key to run-record the reading then get back
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Saturday, December 27th, 2008 AT 8:46 AM
Tiny
MYBIGFAMILYOF9
  • MEMBER
  • 6 POSTS
Thank you, I will let you know the results.
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Saturday, December 27th, 2008 AT 8:58 AM
Tiny
MYBIGFAMILYOF9
  • MEMBER
  • 6 POSTS
I see that right under where you put the oil at there is smoke coming out of there. And it is wet.I think it is oil.I don't think its the fuel pressure. Do you have an idea what it is?
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Wednesday, December 31st, 2008 AT 8:39 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The fuel pressure test port should be right along the fuel rail if its a MPFI system
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Wednesday, December 31st, 2008 AT 8:07 PM

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