preignition - 98 GTP

replaced plugs & wires 10k ago . ran fine for awhile . ses came on . scanned 300 random multi-misfire . replaced ign. module & coilpacks to no avail . pulled plugs .they were burned up . they were ac iridium plugs . what could be causing this ?

What year and is it a GT or a GTP?
I had a wire between the ICM and the PCM burn out. Fried a lot of stuff with it. Killed plug wires, but did nothing to the plugs.
Check here and see what you can find.

http://www.sourcenet.ca:9001/servlets/Home
Good luck, and Happy New Year

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thanks for the advise kustomkid54 . iinstalled new ac iridium plugs & stock ac delco wires . that seems to have done the trick . no ses at any speed

Sorry for the dumb question but, you are running 93 octane, right?

yessirree , 93 or better if i can find it . the wires were the problem . this car had such a misfire i thought i had an exhaust leak . was this piston noise or what ?

What year and is it a GT or a GTP?
I had a wire between the ICM and the PCM burn out. Fried a lot of stuff with it. Killed plug wires, but did nothing to the plugs.
Check here and see what you can find.

http://www.sourcenet.ca:9001/servlets/Home
Good luck, and Happy New Year

http://img.photobucket.com/albums/v425/kustomkid54/Christmas2004001.jpg


Glad we could help.
Not bad for a group of high school kids.
That is all but Cass, he's the "old guy". But, we like him anyhow.

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