Hey guys - so last week I returned from a 300-mile road trip and shortly afterwards I started getting an erratic idle and intermittent stalling when coming to a stop. The engine is also feels like it's choking under hard acceleration and causing the car to buck. I also get some momentary hesitation just when going through the gears and accelerating normally.
I got a solid CEL during the drive when the car first stalled, with two codes:
- P0172 System Too Rich Bank 1
- P0335 (CKP) sensor circuit malfunction
The day after I started seeing the problems, I did the following maintenance:
- replaced plugs
- cleaned MAF
- cleaned ESS (first time ever - it was dirty)
- cleaned air filter
- reset NVRAM
* oil change was done just prior to my trip
I have the BHR ignition, which I just replaced about two years ago. I also have the BHR midpipe with the ceramic cat, which was installed a couple years ago as well. I'm suspecting the cat may already be toast, but I thought I'd be seeing misfires if this was the case.
The car drove well during the first drive after the work I did on it, so I cleared the codes and they haven't come back yet. But I'm still seeing an intermittent idle problem. Most noticeably, when I first start the car, the idle will sometimes bounce up and down rapidly, or it will just be erratic. Also, I'm still not always getting that immediate acceleration when I hit the gas after shifting and the car seems to hesitate under hard acceleration. No more stalling though, yet.
As always, any suggestions are greatly appreciated!
I got a solid CEL during the drive when the car first stalled, with two codes:
- P0172 System Too Rich Bank 1
- P0335 (CKP) sensor circuit malfunction
The day after I started seeing the problems, I did the following maintenance:
- replaced plugs
- cleaned MAF
- cleaned ESS (first time ever - it was dirty)
- cleaned air filter
- reset NVRAM
* oil change was done just prior to my trip
I have the BHR ignition, which I just replaced about two years ago. I also have the BHR midpipe with the ceramic cat, which was installed a couple years ago as well. I'm suspecting the cat may already be toast, but I thought I'd be seeing misfires if this was the case.
The car drove well during the first drive after the work I did on it, so I cleared the codes and they haven't come back yet. But I'm still seeing an intermittent idle problem. Most noticeably, when I first start the car, the idle will sometimes bounce up and down rapidly, or it will just be erratic. Also, I'm still not always getting that immediate acceleration when I hit the gas after shifting and the car seems to hesitate under hard acceleration. No more stalling though, yet.
As always, any suggestions are greatly appreciated!
Idle issues, stalling and bucking under acceleration
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