Question about 2000 Pontiac Grand Am GT
What is the cost?
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: Upstream O2 sensor location?
That is the first sensor closest to the engine. The downstream sensor is the one behind the converter.
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Posted on Aug 31, 2008
Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.
Posted on Mar 29, 2009
YOU HAVE 2 OXYGEN SENSORS.1 ABOVE THE EXHAUST MANIFOLD WHICH IS THE CRITICAL ONE AND YOU 1 OXYGEN SENSOR AFTER THE CATALYTIC CONVERTER.
Posted on May 11, 2010
Testimonial: "Thank you. I was told about the sensor above the manifold but no the other one. Had to change my spark plugs also. "
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