A couple months ago while running Hell Hole I slid off a rock and hit the transmission dead center which broke all the motor and transmission mounts. It somehow pulled/mangled the passenger side exhaust manifold to y pipe enough to cause an exhaust leak. At the time I figured I smashed the resonator and that's why the car got louder and sounded rough. Over time it started to run rough and occasionally throw P0150 (Passenger first O2 sensor code) and P1590(ABS code, not relevant but also popped up on the scanner). until today when I finally fixed it. I didn't repair it as much as put copper gasket maker. It fixed the noise, smell of exhaust, and the car immediately ran better. I've put about 15-20 miles on it and the codes keep popping up, despite the repair. Do I need to disconnect the battery to reset the fuel mapping? Before the fix it would only throw the codes once every 100-200 miles, but now it throws it every 10 minutes.

Before I fixed the exhaust I replaced all the mounts and made sure the exhaust bolts were snug (2/3 that were intact, no difference from before the hit). No other codes were present and no other changes have been made besides filling up about 2 miles ago (Right before posting).

I'm taking it on a trip this weekend, leaving Thursday so I want to get this fixed ASAP. I'll have time next week to do proper repairs but I need it to work for at least 350 miles.


If anyone has any tips on how to share a video here, id be happy to post how it happened. Quite entertaining.

 

*It runs better than before, but still has a slight tremor. Nothing super obvious but if you pay attention you notice it. It runs rougher without load (in neutral) and smoother with load. While driving it feels fine, but will throw the code while I'm driving and not stopped. Sorry if threes any confusion, posting while very sleepy.

 

Maybe check real time scans of O2s to make sure the system is modulating rich to lean and back. O2 sensor could be bad, then running in default mode, so gas mileage will be worse than before.

 

On the Nanocom I'm seeing upstream values of
O2 Sens.bank A (V) = ranging from ~0.07 to ~0.87
While
O2 Sens.bank 2 (V) = 0 and doesn't change.

I have videos of the results and I'll try and post them later!

I assume faulty O2/fouled sensor? Is there an easy way to clean them without removing them and or a way to clean them without replacing them? I'll likely replace all 4 soon, but have a strict deadline before the trip.

When ordering them, does it matter if its OEM from AB or are generic sensors from O rileys good?

 

Really best to chart on an analog system, I like the torque app with an elm327. They do not have to be changed in pairs.

 

Bank A (1) looks good. Bank 2 no bueno, bad sensor or bad wires. Best to replace it, even though the truck will still run, performance and economy may suffer.

I don't know of a way to clean, although I've watched videos of O2 tests using a propane torch and voltmeter.

 

Okay! Cars currently in the shop getting new tires fitted. When I get it back in the morning I'll replace the O2 sensor and hope for the best. I think the sensor is fouled as it was working before.

 

Either way truck will be fine for a 350 mile trip even if that code is thrown.