Hi all,
I've been scrolling through these threads, and I'm hoping someone might know what's wrong with my truck. It’s a 99 xlt 4x4 3.0L v6 flex, I’ve done the IAC valve, plugs, wires, coil pack, evap purge valve canister, injectors, intake manifold gasket, MAF sensor, cam position sensor, both upstream o2 sensors, and a few vacuum lines but I can’t find a leak yet. The truck sat for a bit before I got it so I’m sure it probably needs a fuel filter, but I tested pressure and it is good. This all started after a long trip across the state and back 1200 miles, after pulling away from a gas station. It started idling rough and shaking while driving. After everything I've replaced, it comes in and out of misfiring above idle, and runs well when it's not. It is still idling very rough, and sputtering and shaking at low rpms when driving around town and even at around 65mph on the freeway. Everything I've replaced has little to no significant change to performance so I'm starting to think maybe I have a bad PCM? From what I've read these rarely go bad, and is almost never the problem so I'm not sure. My current codes are as follows, p0175, p0301, p0302, p0303, p0304, p1152. Hoping someone has some insight because I'm completely stuck.
Thanks in advance,
Quincy