LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Someone pinpoint my problem

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Old Nov 28, 2006 | 10:20 PM
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94lt1m6's Avatar
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Default Someone pinpoint my problem

Ok look my car runs like **** once it is warmed up. It coughs if you dont ez into the throttle. I went to a mechanic. He rode around with me with a computer hooked up. He told me it was my plug wires. I started changing them little by little, with no improvement. So nothing before tonight fixed my problem. This is exactly what happend tonight I droped my exhaust (y pipe) took out the o2 sensor. Changed the 3rd spark plug to the back on the drives side, (because i got mad the night before and left it unchanged.) I changed the first plug wire to the front on the passengers side. I started my car up with the open manafolds, just to wake the neighbors. I put the exhaust back on. My car ran BEAUTIFULL the problem was gone. I went to the gas station to put some gas in. Drove around for a couple minutes to soke up the acomplishment. I stopped and did a big burnout . Then the problem came back out of the blue right after the burnout. It coughed like hell and acted like it wasnt going to run. WTF!!!!! !!!!!!! !!!!!!
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Old Nov 28, 2006 | 10:23 PM
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your cats? or opti
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Old Nov 28, 2006 | 10:46 PM
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Sounds like bad oxygen sensors
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Old Nov 28, 2006 | 11:24 PM
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you changed the plugs & wires right?...if so then i agree w/the guys above^^^
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Old Nov 28, 2006 | 11:38 PM
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brand new opti, cap, rotor, o2 sensors, egr valve.
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Old Nov 29, 2006 | 12:08 AM
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I did a massive burnout once right behind work before getting new tires. After I did that my car ran like *** as well! Except mine was a TPI motor... I can't remember what I did, if I replaced my O2 after that or what, but it either went away or I fixed it.

Your opti could be carbon corroded. Injectors need cleaning, list is so long :\
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