If you are getting a rich code set on only one bank, you need to look for something that can affect only one bank.

Things to look at:

  • injectors for that bank. (though would probably lead to a misfire if they weren't operating properly.. note I said PROBABLY)
  • spark plugs for that bank. Check gap, etc.
  • faulty O2 sensor on that bank


Things NOT to check, or not LIKELY to cause the problem:
  • MAF, TB, etc (anything that is before the air-path splits in to seperate banks)



'99 CSVT - Silver #222/276 In a constant state of blow-off euphoria.
Originally posted by Kremitthefrog:
I like to wear dresses and use binoculars to watch grandmas across the street.