94redGTConv

Hey guys I've already posted a thread on this, but noone really implemented what was wrong, I just bought this car and the odometer reads 246xxx and the guy said in 08 it was rebuilt I'm slowly starting to doubt this. lately my car has acted like it had a miss on 2 cyclinders and just lugging a lot and ill put ny foot to the floor and ill go half power and randomly jump up to full power really hard, I replaced all of my plugs and wires fuel filter oil oil filter and ignition coil, I got some Lucas fuel injector cleaner would that be a good try? when I looked at my wires in the dark while it was on it was arcing so bad my friend said it looked like a lightning storm, could it be my distributor or tps?


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dawson1112

Does the dash show a check engine light?? Have you ever pulled any codes from the computer? Also are the wires still arcing like that?
And yes It could be time for a new dizzy or more likely the PIP otherwise known as the Profile ignition pickup, this is the module in the dizzy that is responable for operating the injectors and spark. The PIP cannot be removed with out completly tearing down the dizzy ant taking the shaft out, so alot of pple opt to just replace the dizzy itself. And seeing the 246,xxx on the OD it may be a smart idea to replace it anyways.
The other things that come to mine are a faulty / or dirty MAF sensor , a faulty TFI module otherwise known as the Thick Film Ignition module. This is located on the passanger side fender well under the intake air box. A faulty coil could cause the problems you are describing but bad coils tend to announce them selfs when they start to get hot. The TPS will ussually start to get bad spots in it an will be noticable only in certain positsions of the throttle. or with a slow sweep from idle to wot. If you havnt run the KOER diagnostics I suggest you do this as it will help you to determine if any of the 8 cylinders are causing problems Do the cylinder balance test as well . THis is performed with the KOER . http://www.my5oh.com/forum/viewtopic.php?t=190 The cyinder balance test will compare compression ratios between cylinders and give you a code as to good or bad.

94redGTConv

Thanks hopefully that'll give me a new perspective of where to look, I just put injector cleaner in my tank so hopefully that'll help or be a somewhat of a waste either way its good for it. Also, no, my wires aren't arcing anymore. I've cleaned my tps maf and other intake side of the motor but ill check the dizzy and rotor.


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