Hello again gentlemen. It's been quite a while since I wrote due to the fact that I've been steadily working on the vehicle in an at attempt to get it to pass inspection. I've replaced the following:
Thermostat
Vacuum control valve
IAC valve
All O2 sensors
Temperature sensor and sender
Coil pack
Plugs and plug wires
All vacuum lines (and I mean ALL of them)
Mass air flow sensor
Verified no vacuum leaks
Verified EGR valve is functioning properly and replaced vacuum lines to the EGR solenoid and control valve.
I no longer get a myriad of trouble codes. Just one and it is constant: P0175:
Running rich in bank 2. No other codes show up anymore.
I can clear the code but it comes back almost immediately and will not allow the vehicle to pass inspection. It still runs smooth when cold but but gets rough as the motor warms up. It no longer dies at a stop light but still idles poorly and produces a rich gas smell. Although not near as bad as it used to be.
A mechanic friend said it's my TPS, but why would that be specific to Bank 2? I'm thinking a bad fuel injector in bank 2. Possibly stuck and dumping fuel all the time. If that's possible.
If you hear a scream off in the distance it's just me venting my frustration. Any suggestion would be most welcome and much appreciated.
Thank you,
Richard Reed
Tuesday, August 11th, 2020 AT 4:48 PM