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Discussion Starter · #1 ·
i have a 99 gt 72,000 recently the car started acting up then popped a check engine light code read cylinder 5 misfire. replaced all plugs cylinder 5 coil pack and all coil boots an springs. ran better but still missing at idel sorta and thru out the power range. i un hooked coil pack (cylinder 5) while the car was running an car ran the exact same still also un hooked injector an ran the same. basically it seems like its obvisouly cylinder 5 thats not firing but what other option do i have to try an fix this problem?????
 

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Did you have the COP connected before you disconnected the injector. If you disconnected the injector when the COP was already disconnected of course it would run the same.

Is it still throwing the same code?
 

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Discussion Starter · #3 ·
Did you have the COP connected before you disconnected the injector. If you disconnected the injector when the COP was already disconnected of course it would run the same.

Is it still throwing the same code?
Yes the coil was plugged back n before unplugging injector the code is p0602(powertrain control module programming error.
 
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