I have a Misfire on #7. code is a P1174 Fuel Trim Cylinder Balance Bank1, and a P0742 TCC Circuit stuck on. Im guessing its from the misfire. I have changed the coil, injector, plug, plug wire, did a test on the injector plug to make sure there is a signal to the injector all on #7....Changed out the TCC valve, even to the point of changing the rocker arms.. Did a compressure test on 1, 3, 5, 7 and results were 150 0n first stroke and the final was 180 for all. Anyone have any ideas???

 

Had a buddy do a "Crankshaft Relearn" for me and still the same problem...

 

Fixed Misfires!!! All Misfires in Engine Diagnostics Under Misfires where not Disabled

 

glad i could help

 

Still have P1174 Fuel Trim Cylinder Balance Bank1 though

 

how did you fix the misfires? did the tuner disable them?

 

Yes that's how I fixed them in the tune! I posted how I fixed it and where with HTP.