How do you change the o2 sensor on a 2003 impala
I wouldn't trust anything the Zone tells you. Most oxygen sensor codes are NOT caused by the oxygen sensor. Of coarse, a lot has to do with WHICH O2 sensor code you have. For example, codes P0130,P0131,P0132,P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171 and P0172, are all valid oxygen sensor/fuel trim codes for a 2003 Chevrolet Impala equipped with a 3.4L V-6 engine.
How you would go about troubleshooting the problem depends on which "oxygen sensor code" you have. Many times, the code can be fixed by simply repairing a leak in a vacuum hose. Quite often, these codes are caused by faulty mass airflow sensors. Then again, every once in a while, the problem is actually the oxygen sensor itself. However, if you go by the knowledge and experience in diagnostics that exists at the Zone, you will be changing an oxygen sensor EVERY time. Then when that does not fix the problem, you will be out the cost of the oxygen sensor, PLUS you will STILL have to diagnose the problem to fix it!
Many people think that all an automotive repair technician does is plug in the "magic box" and replace all the parts that the box (computer) tells them to replace (and the people at the Zone like it that way). TRUST ME, it does not work that way! I WISH it was that simple.
FYI: On Board Diagnostic (OBD) Diagnostic Test Codes (DTCs) NEVER tell you what parts to replace. They are called DTCs because for a trained technician, they tell him which of the hundreds of DIAGNOSTIC TEST ROUTINES to perform in order to diagnose the fault and pinpoint the CAUSE of the problem.
Just a little professional advice from someone who has been diagnosing and repairing cars for about 37 years...do with it as you will.
Mar 22, 2012 |
2003 Chevrolet Impala