mikat1

Hello.. my car is missing pretty hard in wot. I have tried to fix what I have been told could be the culprit. I.e. plugs / plug wires, exhaust leaks. I feel like I'm chasing a ghost trying to find where the misfire is coming from. Could a bent pushrod be causing me all of this grief? Is there a way to check without actually going in? Any advice is welcomed. Thanks

KevinR

You would be able to hear it if you bent a pushrod. When was the last time you changed your fuel filter?

mikat1

Fuel filter changed less than 10k miles ago

KevinR

What about any codes? Is it throwing any? Have you cleaned your maf recently?

mikat1

codes = p1133 and p1153. insufficiant switching 02 sensor bank 1 sensor 1/ bank 1 sensor 2. maf cleaned?? not in a while, but something tells me that won't help me anyway

KevinR

Do you have LT's? If so, that is most likely causeing the problem (codes) due to the relocation of the upstream O2 sensors to a location further downstream. You should be able to get those codes tuned out.