Engine Light Stays On

[riotous94j30]

I have a 94 Infiniti J30. I have had it for two years. I have had no problems with it until now. My J30 was hit in a hit and run. this is when it all went down hill. but any way 6 monthes after i bout it my engine light would come on and the car would run ruff. The faster i go the more the car would shake. but the light would go off after a few minutes. The only time it would stay on later is when i changed the spark plugs to Boush platnuim. but i took those out and put NGK platnuim. The only other thing i have added is a KN filter replacement. Yesterday the engine light came on and did not go off. Today i drove it to work and back and the light came on when i turned it on and does not go off. The whole time i drive it it runs ruff and losses accelaration and power. I was thinking maybe cleaning throttle body and intake system with a tooth brush and chemicals. I also thought about checking the spark plugs. but they are supposed to last 5 years. I was even thinking about changing the oil. Any help would be greatly appreciated. I drive it hard race it hard so i am not suprised some thing is wrong with it, but i just hope it is an easy fix. Also after the hit and run and the auto shop fixed my car the airbag light blinks every 3 seconds. any one know any thing about that or can help me with that??

[Q45tech]

And what does the Consult say the problem is, members need to get in the habit of electronic diagnosis as a starting place before wasting resources on hit and mis.

[willisbr]

Take your J to a shop...hook it up and get your computer scanned to see what's tripping your engine light. I guarantee it's your EGR ports (NOT THE VALVES) that need to be cleaned. Had the same prob with my 94...cost me about 250.00 to get the ports cleaned. Let me know how everything turns out.Brian