P0300- Multi Miss Fire..... Help!
#43
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I am having the same exact problem on my wifes 03 yukon, I have a new O2 to change, but is it the one before or after the cat? mine only misses at a idle. and I always thought that 1 sensor reads at idle and 1 reads at WOT? am I wrong?
thanks
#45
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ok so i guess I will change the front one right now and see what that does.
I am getting multiple missfire code and bank 2 lean code. already changed plugs and wires. bank 1 plugs look perfect, bank 2 plugs were very very black, (too rich). it only does this at idle, runs perfect on the highway.
I am getting multiple missfire code and bank 2 lean code. already changed plugs and wires. bank 1 plugs look perfect, bank 2 plugs were very very black, (too rich). it only does this at idle, runs perfect on the highway.