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Check Engine Light misfires O2 sensor 850

posted by  KlausC on  Sun Dec 27 13:20 CST 2015
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

When checking compression, also check for antifreeze in the oil. I assume that you checked the heater core and its connection at the firewall.

The p0300 is multiple misfire and the other p030n tell which cylinders are involved. The O2 sensor message might be for possible CAT problems due to the misfires.

When did the ABS light come on, before or after the hub replacement?
--
Keeping it running is better than buying new






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