94 ssei running rough
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Series DONE
- LE Member
- Posts: 2
- Joined: Thu Apr 24, 2025 10:33 pm
- Year and Trim: 1994 Bonneville ssei
1995 Bonneville ssei - Location: Canada
94 ssei running rough
Last October, literally as soon as I hit a deer, my 94 ssei started running very rough. Misfiring, idle climbing and dropping almost to the point of stalling. The service engine light was always on and off for the two years I owned the car but now it’s been on steady. I’ve run 94 octane since I bought it. Ive thrown all the easy parts on it, new plugs, wires, coil packs, maf sensor, coolant temp sensor, o2 sensor but nothing fixed the problem. Now just last night I decided to check on the pcv and it had been installed upside down and backwards! And I drove it like this for two years! Anyways, any help with this miserable situation would be much appreciated.
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J Wikoff
- Administrator
- Posts: 17080
- Joined: Mon May 19, 2008 7:01 pm
- Year and Trim: 1992 SSE
2009 G8 GT - Location: Central Illinois
- Contact:
Re: 94 ssei running rough
Well, check that trouble code...
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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95naSTA
- Certified Bonneville Nut
- Posts: 7087
- Joined: Wed May 21, 2008 11:47 pm
- Year and Trim: 95 SLE
- Location: Philadelphia
- Contact:
Re: 94 ssei running rough
When you hit the deer, was the engine harness or Ignition Control Module sub-harness damaged?
95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
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Info on dropping a 92-99: Here.