Cadillac Catera and Cimarron Forum Discussion, 2001 Catera throttle body and O2 sensors in Past Cadillac Vehicle Discussion; Okay, so took the car to dealership and they did their diagnostic on the P0140 / O2 sensor and they ...
Okay, so took the car to dealership and they did their diagnostic on the P0140 / O2 sensor and they said the new sensor is bad and they couldn't find any other problem. They are checking on the idle/ throttle issue now. I guess have to send in the new O2 sensor for a replacement.
The dealership checked the idle / throttle response and recommended to get it cleaned and probably do a fuel injector clean. I have already done these so my guess is it's a bad throttle body. Regarding the O2 sensor now they are saying it's the old O2 is bad, so confused with them.
I'm going to check the sensor and make sure which to replace,
Yep, they are not sure or not interested in finding the exact problem. We paid $95 for the diagnostic and ended up no where. This afternoon they did some testing, swapped the O2 sensor side and said that the new one was bad because it gave the codes P0160 and P0161 for bank 2 sensor 2. When my father in law went to pick the car up they said that the old sensor was bad.
Who knows what's going on.....anyways I removed the new sensor and installed the old one back and will test it out.
It's kind of weird the box says AC Delco 9128412 / GM 9128412 and made in China. Also, on the throttle body it has a sticker saying Bosch part number and made in China and is not like the original machine pressed imprint on the throttle body.
Anyways, the car is running better has a slight shake at cold start and not sure what that could be but runs fine after warming up. Anyways, need to replace the O2 sensor now and hopefully fix the O2 problem.