On Fri, 11 Mar 2005 23:59:18 -0500, "Chuck Jurgens"
Your PCM is saying it thinks the oxygen sensor (or associated wiring)
is bad (the P0131 & P0132). The P0171 (fuel trim too lean) & P0300
(excessive misfires) are likely just symptoms of the first problem.
I'd start with a new O2 sensor. Then clear the MIL & odds are you'll
be good to go.
Agreed. P0300 sets when there is an engine misfire significant enough to
cause damage to the emission system. But, it also says that an extremely
lean condition (P0171) will also cause a P0300 at idle. So, if P0131
(indicating a false lean condition), the PCM will sense a P0171 which in
turn also causes a P0300 at idle. I'm with Al, replace the HO2S and see what
happens. According to the info I have here, you probably have three, so
you'll have to do some testing to find out which one is the culprit.
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