Alright guys I couldn't find the post I made about a month or so ago but I have the issue still with the car bogging down at about 4500-4700 rpm and basically not reaching the 5700 Rpm High shift mark, well the other morning on the way to work I decided to push it a little harder and in doing so as it bogged down I didn't let off the throttle yet I held it down and after about a minute or so at a bogged 4700 it threw a service engine light so I was excited to be able to finally trouble shoot the problem, but alas to no avail the light turn itself back off my expression exactly I have never seen a check engine light turn itself back off less than a mile after turning on, I am a little nervous about pushing it to hard worried about breaking something I can not afford to repair. so any advice at all would be greatly appreciated!

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Member #3848
2002 Black Bonneville SE Sold But Not Forgotten
2002 White Bonneville SSEi Project car

Both of my 2003 SLE's have an issue when you jump on it. Both well maintained and in great running condition. 40-50MPH push pedal to floor and the vehicle is a tiger until about 4200-4400 RPM and it just starts stumbling and bucking. Seems not so prevaelant at lower speeds. Only thing I have not checked is fuel pressure. Too cheap to buy a gauge. Both have new fuel filters.

Plugged cat.

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Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 95k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 260k | Official Bonneville Hauler

It would be wise to see what the code was. You should be able to pull it with a code scanner.

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~Randall~


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place

I had that problem too previously. You should still be able to pull the code even though the light went out. Mine would do the same thing. As i recall, i was a random misfire code. I tested and replaced a bad ignition coil, along with the fuel pressure regulator. After that, the problem went away. As i changed two things, I cannot say what was causing the actual problem, but that was my experience.

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'04 SLE
Crimson Tintcoat
~125K miles

but with the code not staying how would I check it?

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Member #3848
2002 Black Bonneville SE Sold But Not Forgotten
2002 White Bonneville SSEi Project car

My guess as well.

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-Car Guy Carl
"Penelope" - 2003 SLE - 247k Miles
"Sydney" - 2000 Honda S2000 - 98k miles

It should be stored as a history code.

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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights

Alrighty worth a shot

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Member #3848
2002 Black Bonneville SE Sold But Not Forgotten
2002 White Bonneville SSEi Project car