Originally Posted by TLPMYD
So I finally gave up and brought the wk to the dealership to look at my 304 code since I changed the plugs and check the coils and it was still popping up. Dealership told me it had to be carbon buildup and to by the Mopar combustion chamber cleaner. So I bought me a can took the Jeep home sprayed the entire can into the throttlebody while it was running let it sit for three hours and started her up. There definitely was a lot of smoke and once the smoke went away there was no more codes but that was yesterday this morning I turn it on and take her for a spin and the 304 code and now a 113 code appear ...???
Did you remove the intake temperature sensor when you too off the intake? If so, did you remember to plug it back in?
It sounds like the combustion chamber cleaner did not solve your problem, and that in using it the IAT sensor is now damaged or not hooked up correctly.