running lean
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runnig lean
my 99 z seams to be running lean in bank 1&2. Ive been told it is the mass airflow sensor by one guy and o2 sensors by another. anybody else got an idea on the problem
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Are you throwing any codes? I talked to a friend, and he said it might be the MAF or 02 sensors, or it could be in the tuning. It could also be carbon buildup, which will def make it run lean.
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We swapped the O2's front to back (fronts were a little sluggish, but not dead) but that didn't cure it. Unplugged the MAF, and the LTrims went straight back to (near) 0 where they should be, from pegged @ 25% ... Swapped the MAF (ported stock) with a bone stock one I had sitting around, same deal - pegs 25% LTrim...
Sooo, still digging into this one
Sooo, still digging into this one