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I replace the O2 sensor on my 1997 Pontiac Grand Am and before the week is over, the service engine soon light comes on again indicating the O2 sensor is bad. I have replaced it three times so far.
What code are you getting? A O2 sensor code could be caused by any number of reasons not just a faulty O2 sensor.What code are you getting? A O2 sensor code could be caused by any number of reasons not just a faulty O2 sensor.
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Its not the O2 sensors, or the coolant sensor or the thermostat.
Get the codes read front the computer. Post those codes here before you spend any more money or install the other parts.
Your vehicle will have 2 O2 sensors. One before the catalytic converter and one after. replacing the O2 sensor will likely not solve your high idle issue. An O2 sensor that has gone bad will likely set a code and turn on the check engine light. Is the check engine light on?
I assume you have a 3.1 liter V-6?
The left exhaust manifold will be the one closest to the radiator. The righ will be the one closest to the firewall.
Sounds like you have a bad wheel speed sensor. You need to have it scanned. Since it's been sitting, it might just be a bad connection to one of the speed sensors.
I have this same problem and had it checked. It is the wheel sensor. Mine is the passenger front right wheel sensor. According to the mechanic I take it to the GrandAm's are known for this. The part is about $40.
What code are you getting? A O2 sensor code could be caused by any number of reasons not just a faulty O2 sensor.
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