Under Drive pulleys (1559) Misfireing.

[Rowlandp]

I have an 04 GT and recently installed under drive pulleys and the engine is misfireing and I dont know what is causing it. I used the factory belt and it fits fine. Could it be the timing and how do I adjust it.

 

[white99gt]

I have an 04 GT and recently installed under drive pulleys and the engine is misfireing and I dont know what is causing it. I used the factory belt and it fits fine. Could it be the timing and how do I adjust it.

The car really isnt misfiring.The ecu just thinks it is.

You need to retorque the balancer to factory specs and disconnect the battery to reset the ecu.
It should be fine then.