Violent riding...sometimes
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johnnyboy87
- LE Member
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- Year and Trim: 1993 Pontiac Bonneville SSE
Violent riding...sometimes
When I'm cruising on the highway randomly the Service Engine Soon light will come on and as soon as it does the engine starts bucking and jerking. Its very violent. The only way i've found to get it back to normal is to get about 5mph over what i was originally doing, or, putting rpms around 4k and as the engine slows back down to cruising speed the light goes off and the engine purrs as smoothe as ever.
Help?
Help?
- J Wikoff
- Administrator

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Re: Violent riding...sometimes
Pull the PCM codes. Could be a number of things.
http://www.pontiacbonnevilleclub.com/fo ... =51&t=8689
http://www.pontiacbonnevilleclub.com/fo ... =51&t=8689

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
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robertccach
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Re: Violent riding...sometimes
misfire maybe?
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johnnyboy87
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Re: Violent riding...sometimes
its not showing any codes. the CEL turns off and the scanners here aren't reading any codes.
- J Wikoff
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Re: Violent riding...sometimes
Did the paperclip trick give you anything? Do any of the gauges do anything out of the norm when it's happening?

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
- willwren
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Re: Violent riding...sometimes
You need a proper scanner capable of reading HISTORY codes.

Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers
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Re: Violent riding...sometimes
Doesn't the paperclip trick give history codes?

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
- renchjeep
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Re: Violent riding...sometimes
If it's a 93, I believe it will not hold history codes. Pre-OBD2. You will need to retrieve codes before shutting it down.
- J Wikoff
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Re: Violent riding...sometimes
My 92 holds codes. You can shut down, turn the key to on, and pull codes. I just don't remember if the paper clip will tell you every code set since the last clear (which, I think it does, but not sure), or just the current ones. I do know it will show a momentary TPS LOW code, for instance, after a shut down and key on. That's the last code I pulled via paper clip before I got a scantool.

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
- willwren
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Re: Violent riding...sometimes
OBD1 does hold history codes, renchjeep. But it requires a scantool to retrieve them. The paperclip trick will only report current codes.

Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers
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Re: Violent riding...sometimes
Sounds a bit like what happened when one of the ignition coils went bad on my '97 Cadillac last year. I replaced them and she's been purring like a kitten ever since. Too bad she's leaking oil like a sieve, though. Then again, that's why I'm now driving a Bonneville.
Daily Driver: 2011 Chevy Impala LT
Weekend Toy: 1995 Olds Aurora
Sold but not forgotten: 1997 Olds LSS 1995 Pontiac Bonneville SLE
Weekend Toy: 1995 Olds Aurora
Sold but not forgotten: 1997 Olds LSS 1995 Pontiac Bonneville SLE
- renchjeep
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Re: Violent riding...sometimes
Thanks, Will! My OBD1 memory has gotten a bit fuzzy over the years......willwren wrote:OBD1 does hold history codes, renchjeep. But it requires a scantool to retrieve them. The paperclip trick will only report current codes.
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johnnyboy87
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- Joined: Wed Oct 20, 2010 1:28 pm
- Year and Trim: 1993 Pontiac Bonneville SSE
Re: Violent riding...sometimes
sorry computer was down for a week. i did find a proper code reader and i got codes 12, 26, 36, and 44.
I read what they all are but dont really know what they mean exactly.
again, sorry for getting back to yall so late.
thanks for all the help.
(didn't know anything about a paperclip trick)
I read what they all are but dont really know what they mean exactly.
again, sorry for getting back to yall so late.
thanks for all the help.
(didn't know anything about a paperclip trick)

