gtp missfire

**mtz956** · 12-20-2010

my 98gtp missfire a little at full throttle like if gas cuts off . I got a fuel injector cleaner and my car got a bit better, but still missfires . Any suggestions? Thanks

**Bio248** · 12-20-2010

what's done to the car? what maintenance have you done or not done?

**mtz956** · 12-20-2010

it has new sparkplugs autolite ,fuelfilter, tps and i cleaned the throttle body,maf and the idler control sensor. Need to do the sparkplug wire set.

**Rather B Blown** · 12-21-2010

if new wires doesnt fix it check coil resistance, if that doesnt fix it check your injectors

**mtz956** · 12-23-2010

im going to do the wire set, can bad coil resistance cause misfire? I have one that i got from junkyard it could be the one. I realy have bad wires hopfelly i can fix it. Misfire happens at high revs around 5000. Thanks.

**djs4021** · 12-23-2010

i chased something like this for a while. Might not be your issue but mine happened after a fresh tune up and turned out to be barely visible cracks in the porcelain on my new #4 plug. I think it was the result of not using a cushioned plug socket.