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It wont stay running

Tiny
T.FRIDAY
  • MEMBER
  • 1999 PONTIAC BONNEVILLE
  • 15,500 MILES
It will crank but wont stay running. I have changed the fuel filter and it acted like that fixed it. I drove it about 5 or 6 miles, and it just cut off. So I changed the fuel filter again. Now it crank but wont run. Changed the fuel relay, put more gas in and nothing changed. It is getting 50lbs. Of fuel pressure. So I dont think it is the fuel pump. Any ideas?
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Saturday, March 17th, 2012 AT 8:50 PM

12 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
If u spray it will it start?
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Saturday, March 17th, 2012 AT 8:55 PM
Tiny
T.FRIDAY
  • MEMBER
  • 9 POSTS
I will have to get some ether
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Saturday, March 17th, 2012 AT 8:58 PM
Tiny
T.FRIDAY
  • MEMBER
  • 9 POSTS
The car starts just fine. It just wont stay running. I can make it run for about a minute or so giving it gas, but it sounds awful and black smoke coming out of the back
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Saturday, March 17th, 2012 AT 9:03 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Sounds like a MAF sensor, check for trouble codes
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Sunday, March 18th, 2012 AT 6:33 PM
Tiny
T.FRIDAY
  • MEMBER
  • 9 POSTS
If you would actually read what I posted you would kno that I'm getting 50psi!
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Sunday, March 18th, 2012 AT 7:50 PM
Tiny
AMY DEWITTE
  • MEMBER
  • 11 POSTS
Bonnevills has a recall on a Fuel Pressure Regualtor. Get your vin# (last 8 #'s and letters) and call pontiac. They will fix for free.
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Saturday, March 31st, 2012 AT 4:09 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
How is it going. Did you get it running
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Sunday, April 1st, 2012 AT 12:36 PM
Tiny
T.FRIDAY
  • MEMBER
  • 9 POSTS
Yep. Mass air flow sensor
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Sunday, April 1st, 2012 AT 3:26 PM
Tiny
DJCL
  • MECHANIC
  • 767 POSTS
Good to hear its fixed
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Sunday, April 1st, 2012 AT 4:05 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
Glad to hear. We will be here.
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Sunday, April 1st, 2012 AT 5:42 PM
Tiny
ASHLEE MARIE
  • MEMBER
  • 13 POSTS
Okay so I'm hopeless about my car. I have a 1999 Bonneville SE. Not supercharged. Originally the engine would turn on and it would start but then die after a couple seconds. Then I changed the EGR valve and the Mass Airflow sensor, AND spark plug wires and it would run for longer and stay idling. But when I put it into gear it would die and backfire. THEN I changed the spark plugs because the scanner was throwing a random cylinder misfire, which was I assumed to be spark plugs because I just replaced the coils and the wires and everything. Now I try to start it and it's back to square one. Dies right away and backfires. I've put over 350 dollars into this thing to fix it and I still cant figure it out.
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Tuesday, June 11th, 2019 AT 9:53 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,840 POSTS
These have a oil pressure switch that runs the fuel pump and cuts it off if there is no or low oil pressure. I would check your engine oil and then check the sensor. Below is the location. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Monday, June 17th, 2019 AT 12:12 PM

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