Question about 2001 Pontiac Aztek
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Posted on Jan 02, 2017
hi im wes
all o2 sensors are in the exaust you have one before the cat converter and one after
ps please rate me
Posted on Mar 31, 2009
Hello. I used to work in a GM dealer. It is seldom the EGR valve that is the problem. If it is code P1404, the problem is a PCM calibration. Take it to a local dealer and they can reflash the PCM. If you want to get technical about it, the PCM is and emission control device and should be covered by warranty for 8 years or 80,000 miles.
Posted on Apr 16, 2009
You have 2 oxygen sensors, and they are mounted in the exhaust, one before and one after the catalytic converter. I am pretty sure the upstream one is threaded into the exhaust manifold, and is easy to find.
Posted on Mar 16, 2010
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