My car is an 01 with right around 40,000 miles now.
I installed a P1SC about 6,000 miles ago and had it tuned. Car ran great and made good power(365/382 at the wheels) Roughly 1 week after the tune, the car began to have trouble starting..seemed like it was bogging out. Then, the check engine light came on. 2 codes...system too rich. Seemed right...too much fuel on startup.
Went back to my tuner and he leaned it out some. Again, car ran fine for about a week then same things happen, bogging startup and CE light.
I went back again, he leaned it out a little more and put it back on the dyno....on one run, it was around 14 on the a/f meter at wot...ie really lean...and the CE light came on right after that saying system too rich.
So now my tuner thinks my O2 sensors may be bad. The car has never thrown any O2 codes though...only the system too rich codes...both bank 1 and bank 2. We originally thought it was due to the altitude differences. I had it tuned in north carolina...and I lived in virginia, high in the mountains. I recently moved to florida though and it is still doing the same thing.
cliffs notes: car is tuned, has trouble starting and the CE light is on...system too rich. Can this be the O2 sensors?
I installed a P1SC about 6,000 miles ago and had it tuned. Car ran great and made good power(365/382 at the wheels) Roughly 1 week after the tune, the car began to have trouble starting..seemed like it was bogging out. Then, the check engine light came on. 2 codes...system too rich. Seemed right...too much fuel on startup.
Went back to my tuner and he leaned it out some. Again, car ran fine for about a week then same things happen, bogging startup and CE light.
I went back again, he leaned it out a little more and put it back on the dyno....on one run, it was around 14 on the a/f meter at wot...ie really lean...and the CE light came on right after that saying system too rich.
So now my tuner thinks my O2 sensors may be bad. The car has never thrown any O2 codes though...only the system too rich codes...both bank 1 and bank 2. We originally thought it was due to the altitude differences. I had it tuned in north carolina...and I lived in virginia, high in the mountains. I recently moved to florida though and it is still doing the same thing.
cliffs notes: car is tuned, has trouble starting and the CE light is on...system too rich. Can this be the O2 sensors?