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Pontiac Bonneville fuel leak problems

21 of the 1,902 owner complaints about the Pontiac Bonneville describe fuel leak, most of them for the 1999 model year.

owner complaints
21
worst model year
1999
typical mileage
80,551
Is there a fix? There are 3 recalls for this area of the car. See below

By model year

What owners say

Filed Nov 24, 2011 · Fuel system · GA

Fuel system, gasoline:delivery recall for 1999 pontiac bonneville recall announced: february 24 2004 the federal safety agency reference: #04v090000 number affected: 910,873 summary: on certain passenger vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line. If the engine does not start when cranked, the fuel from the leaking regulator and a mistimed spark can cause a backfire. Consequence: the backfire can rupture the intake manifold. The rupture of the intake manifold can displace a fuel line, pulling an injector out of place, and causing a fuel leak and possible fire. Fix: dealers will install new fuel pressure regulators with improved diaphragms. The recall will be conducted in phased mailings. Phase 1 began on june 30, 2004, and phase 2 began on september 30, 2004. Owners should contact buick at 1‑866‑608‑8080, oldsmobile at 1‑800‑630‑6537, or pontiac at 1‑800‑620‑7668. For detailed information & supporting documents, see the official the federal safety agency page concerning recall #04v090000.

Filed Sep 17, 2010 · Fuel system · 132,000 miles · NC · fire

There has been a problem with a gas leakage. The fuel supply line fitting at the fuel injector rail was the problem. O-rings were replaced, things seemed fine - no gas smell or leakage. This lasted for appx. 24 hours. I drove about 7 miles to and from work three times, a total of 21 miles, stopped at a library, came out, smelled gas, was driving the car home - one mile - was going to park it and get someone to look at it. I stopped at the mailboxes and heard a slight poof sound under the hood.when I looked up I saw smoke bellowing out from under the hood. I grabbed my purse and jumped out. From a distance I saw 2" balls of fire dropping from the engine to the street, called the fire department and watched my car go up in flames while waiting for them to show up - all because of one small plastic piece under the hood. Also, I would highly recommend everyone to carry full insurance coverage - a lesson hard-learned.

Filed Aug 31, 2009 · Fuel system · TX

No incidents but there is damage done to the fuel , emission and brake line the fuel and emission lines from the fuel tank use a plastic quick connect coupling just underneath near the rear passenger side tire . The coupling becomes lose and sprays the fuel lines and brake hoses with fuel this washes off the protective layer of the hoses which then corrode and leak fuel and brake fluid , this happened on my 1996 bonneville can anyone email me if there are any recalls on this car for that reason or if I am entitled to repairs by the manufacturer.

Filed Feb 8, 2007 · Engine, Fuel system · 31 miles · VA

I have had a steering problem since I purchased my 2001 bonneville se. I have a document id #01-02-32-001a that states 2000-2002 pontiac bonneville has a clunk noise from front of steering wheel rotation (lubricate intermediate shaft). After months of getting a run-around duke pontiac in suffolk va finally diagnosed my problem and lubricated the shaft on 03/01/02. The noise stopped for about a year or so and has been getting worse. It now feels like the car has a safety issue because it is hard to control at low or higher speeds. I was advised by perry buick -pontiac 10/05/06 that the noise I'm hearing is from the intermediate shaft. I also experienced low fluid levels that was detected on 8-16-05 when I got an oil change from tune up plus. I then went to perry buick-pontiac and was charged $376.62 to replace upper intake manifold and the work order was noted that the coolant reservoir was empty. After investigating I found that there was a notice in 2003 that pertains to engine coolant leak at the upper intake manifold to throttle boby gasket. It states that the condition could result in low engine coolant level and higher engine temperature. I feel that general motors should replace the intermediate shaft because I still own the car and am having the same problem that I feel is a threat to my safety and to those who ride with me. I also feel that general motors should reimbursed me the $376.62 that I paid 8-18-05 to have the manifold replaced. I also had a fuel leak oct 5,20005 and am not sure if that was not related to the problem aforementioned.

Filed Jun 30, 2006 · Fuel system · 80,551 miles · CA

Noticed smell of gas when auto parked in garage..further investigation noted that fuel leaking from fuel line..took auto to dealer and dealer stated that both fuel lines have deteriorated, causing the leaks..while I have been familiar with fuel leaks from loose connections, I can not imagine how fuel lines can not been built to last.

Filed Oct 5, 2004 · Fuel system · 102,000 miles · NC · fire

My 1999 pontiac bonneville exploded when the key was turned in the ignition & fire shot out from under the hood. When the key was turned off, the fire stopped. I had the car towed to a private mechanic who replaced the a fuel injecter & upper intake plenum (which was in pieces from the explosion). My bill was $430.63. In june 2004, I received a recall letter from gm corporation saying there was a safety issue with fuel pressure regulator diaphragms leaking. The letter described the following: "a leak can allow fuel to enter the intake manifold through a vacuum line. In low battery conditions, if the engine does not start when cranked, the fuel from the leaking regulator and a spark can cause a back fire. The back fire can rupture the intake manifold, causing a loud bang. The rupture of the intake manifold can displace a fuel line, pulling an injector out of place, and causing a fuel leak. If there is an ignition source, a fire can result." this letter described exactly what had happened . The lights had been left on in my pontiac which caused a dead battery. A battery charger was connected to the vehicle when the explosion happened. When we tried to start the car again, the fire started again where the intake manifold was located. I made a request for reimbursement to gm. My file # is 1-260698900. I was asked to take my car to a dealer in salisbury for an inspection. When I took the car in on sept. 29, 2004, the fuel pressure regulator was replaced. According to the recall letter, an inspection will be made and, if necessary, the regulator will be replaced. So the recall condition was fixed by this replacement. Gm refuses to reimburse me for my repair saying I have no proof the recall condition caused the explosion. I was given no recourse to dispute their decision. The condition described in the safety recall letter was exactly what happened to my vehicle in february. Help.

Filed Sep 28, 2004 · Engine, Fuel system · 60,789 miles · PA

When driving at an undetermined speed, the check engine light appeared on the dashboard, then the vehicle stalled. Consumer had the vehicle towed to the dealership and the mechanic determined that the fuel pressure failed. *ak the radiator cap was replaced. While in motion, about 2 miles at 30 MPH, the check engine light had come on. The vehicle was returned to the mechanic. The next day the vehicle would not start. The dealer found that fuel leaked and ruptured the manifold. Recall#04v090000. The consumer was told that the recall was not in reference to her vehicle. *sc *jb the consumer sent in a thank you note after recieving her recall notice.

Filed Aug 25, 2004 · Fuel system · 43,500 miles · ND · crash

When involved in an accident, the fuel safety shut off in my wife's bonneville didn't work. She was struck just behind the passenger side rear door and then pushed into a traffic light hard enough to set off the air bags. After both impacts the car was still running and had to be shut off by the ignition key. Fortunately there was no fuel leak. No injuries due to the failure.

Filed Jul 26, 2004 · Fuel system · 63,430 miles · AZ

Request for reimbursement for intake manifold that ruptured twice. *mr fuel leaked into the plastic intake manifold. *sc there was a recall regarding the issue. Recall#04v090000.

Filed May 20, 2004 · Engine · IL

Consumer had the same problem as mentioned in the federal safety agency recall 04v09000: vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line. Dealership admitted this vehicle has the same problem, but due to VIN# wont fixed free.

Related recalls

Fuel system, gasoline: deliveryReported February 24, 2004 · 910,873 vehicles affected
What is wrong
On certain passenger vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line. If the engine does not start when cranked, the fuel from the leaking regulator and a mistimed spark can cause a backfire.
Risk
The backfire can rupture the intake manifold. The rupture of the intake manifold can displace a fuel line, pulling an injector out of place, and causing a fuel leak and possible fire.
Remedy
Dealers will install new fuel pressure regulators with improved diaphragms. The recall will be conducted in phased mailings. Phase 1 began on june 30, 2004, and phase 2 began on september 30, 2004. Owners should contact buick at 1‑866‑608‑8080, oldsmobile at 1‑800‑630‑6537, or pontiac at 1‑800‑620‑7668.

Recall number 04V090000 · Recall details

Fuel system, gasoline: storage: tank assemblyReported July 1, 2003 · 102,212 vehicles affected
What is wrong
On certain cadillac deville and seville passenger vehicles, funeral coaches, and limousines equipped with a v8 (4.6l) engine, oldsmobile aurora passenger vehicles equipped with a v8 (4.0l ) engine, and pontiac bonneville ssei passenger vehicles equipped with a supercharged v6 (3.8l) engine, the fuel tank pressure sensors are unusually susceptible to malfunctions. If the sensor malfunctions, excessive vacuum can be applied during self-diagnostic testing.
Risk
Fuel system components can be damaged and fuel can leak from the vehicle when it is refueled. Fuel leakage in the presence of an ignition source can result in a fire.
Remedy
Dealers will replace the fuel tank pressure sensor. Owner notification began on october 17, 2003. Owners should contact cadillac at 1‑866‑982‑2339; oldsmobile at 1‑800‑630‑6537; or pontiac at 1‑800‑620‑7668.

Recall number 03V238000 · Recall details

Fuel system, gasoline: fuel injection systemReported July 1, 1996 · 275,811 vehicles affected
What is wrong
A backfire during engine starting can cause breakage of the upper intake manifold.
Risk
This condition can cause a no-start condition and possibly an engine compartment fire.
Remedy
Dealers will update the powertrain control module programming. Until the campaign repair is made, the vehicle hood should be shut whenever starting the vehicle to reduce the chance of personal injury.

Recall number 96V116000 · Recall details

Questions about the Pontiac Bonneville fuel leak

Which Pontiac Bonneville years have fuel leak problems?

The model years with the most reports are 1999 (8 complaints), 1998 (5 complaints) and 1996 (4 complaints).

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