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 Post subject: Car Issues
PostPosted: Sun Apr 07, 2024 1:56 pm 
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Joined: Sun Apr 07, 2024 1:53 pm
Posts: 2
Year and Trim: 2005 Pontiac Bonneville SE
Hi, so I have been having some weird problems with my 2005 Bonneville SE, over a long period of time resting it'll start just fine but when you start it alot over a short period of time it doesn't really like to start. And also I've been having the issue of starting it then as soon as I switch it to drive it'll just kill the engine. I'm completely stumped over the problem and would really appreciate any help thanks!


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 Post subject: Re: Car Issues
PostPosted: Sun Apr 07, 2024 8:02 pm 
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Joined: Mon May 19, 2008 6:04 pm
Posts: 25933
Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Likely two separate issues, do you have any codes?
1. Leaking fuel pressure regulator causing fuel to flood the vacuum lines basically flooding itself out. Check for any wetness in the vacuum line off the fuel pressure regulator.
2. Could be many things causing it to misfire and as soon as it sees a load it dies. Try unplugged the MAF sensor and see if it acts different.

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Andrew - owner/operator of Bonnevilles Unlimited
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2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 57k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 110k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 270k | Official Bonneville Hauler


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 Post subject: Re: Car Issues
PostPosted: Sun Apr 07, 2024 8:05 pm 
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Joined: Sun Apr 07, 2024 1:53 pm
Posts: 2
Year and Trim: 2005 Pontiac Bonneville SE
The only code on my engine is for the EGR valve, which I already replaced and I recently replaced the mass airflow sensor as well.


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 Post subject: Re: Car Issues
PostPosted: Fri Apr 12, 2024 12:40 pm 
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Certified Bonneville Nut
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Joined: Mon May 10, 2010 6:11 pm
Posts: 9517
Location: Chicago, IL
Year and Trim: 2003 SLE
Fuel pressure regulator usually causes these starting issues when the vehicle is not fully warm.

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"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
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