Message: My '96 Dak V8 recently gave me the code 21, slow O2 response of front O2 sensor. It also said misfire of cyls 6 and 8. Is this just plugwire crosstalk or what else is going on? 3" exhaust and O2 sensors are only about 25K miles old. New ign system too. Just had the codes cleared and it hasn't showed back up yet.....
thanks
robertg
P 1
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Subject: Code 21 O2 Sensor