Engine knocking and popping
#11
Senior Member
Thread Starter
I'm doing them all because they need to be changed anyway and I haven't towed it to the shop yet
#12
Senior Member
Thread Starter
Well after all I ended up spending $397.68. Not too bad for re coil and all new spark plug and a tune up, she's running great too but still didn't get rid of the code... This darn p0171/p0174..
#14
Ford Owner
I am reasonably sure that those codes are from the oxy sensors and they most likely kicked on because of your miss fire. They should go off on their own in a few days if your truck is now running right.
#15
Senior Member
Thread Starter
Well I've had these codes since I've had the truck, so far I've replaced the DPFE sensor, egr rubber tubes, Pcv valve, iac control, cleaned throttle body and maf sensor... Going to look into replacing o2 sensors and check for a vacuum leak