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  1. J

    2000 4.0 SOHC misfire

    I have a scanner capable of live readouts and both upstream o2’s both cold and once up to temp were all over the place regardless of throttle consistency. 0.080-0.800v. After a hard run to the top (me giving about as much of a damn as this old turd is worth) .. it cleared up. Its ran near...
  2. J

    2000 4.0 SOHC misfire

    Forgot to mention, also cleaned IAC, MAF and TB.
  3. J

    2000 4.0 SOHC misfire

    Hey yall I've been chasing a misfire that doesn't stay consistent to one cylinder. It seems however it staying frequent to the passenger side bank.. p0301, p0303. I've read that cross connected O2's can cause a weird rich/lean situation. I try to process through my mind how you could cross...
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