what can it be? a few people said the upstream o2 sansor but i changed that and cleared the code and the car still does the same thing. does anyone else know what it could be?
my mph needle jumps from like 25 to 20, really wiered, just noticed this last week.
You need a scan tool to see how the sensors are acting. Usually with 1XX codes it is lean or rich mixture fuel issue.
What is PO133 for anyways?
First thing I'd be looking at ST/FT, then LT/FT. Then go from there, usually ST/FT can tell you a lot.
good luck
- 2004 Cavalier - 124k, owned since new
P0133 - O2S (Sensor 1) Circuit Slow Response
My car right now is flaging the same fault, and I have simular problems + more
My engine light isn't on though, plus with other vacuum related faults I'm leaning in another direction for mine...a.k.a Map sensor
