Question about 2002 Chevrolet Tahoe
I have a 2002 Tahoe 5.3 z code. Recently my service engine soon light came on I had my mechanic check the code and he said it was showing a lean condition on bank 2. The engine was dropping a cylinder and He said a tune up should do the trick. I have had new plugs, plug wires, fuel filter, air filter, oil change and the truck ran like a new one. The service engine light was out for about 200 miles and is back on now. I can smell like rotten eggs when the service engine light is on and for now I have not noticed a miss at idle as I did previously. The truck has almost 80,000 miles on it. Anyone help me please?
A tune up will not cure the lean code, in fact an engine miss gives a rich code from the unburned fuel. I would suggest u verify u have no vacuum leaks, also clean the inside of the MAF sensor if so equipped and replaced the bank two O2 sensor, that is the passenger side sensor before the catalytic converter. If u have the money replace both right and left sensors, it is better to do them in pairs.
Posted on Jan 15, 2009
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Posted on Jan 02, 2017
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