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  1. 0

    2003 Protege5 P0300 random misfire

    I'm going to try cleaning the IAC, but it's hard to work up the motivation when I don't have a garage and it's consistently -35 Celsius out right now
  2. 0

    2003 Protege5 P0300 random misfire

    I cut the EGR tube and plugged the hole on the header. On the other end of the tube, I bought a piece of hose over it and plugged it with a bolt. It sets an engine light, but it doesn't affect anything and I've done it on two Proteges and it's worked like a charm both times. And I don't know...
  3. 0

    2003 Protege5 P0300 random misfire

    Correction, I meant VTCS, not VCTS.
  4. 0

    2003 Protege5 P0300 random misfire

    First post on here, but I figure this is the best place to ask. I have an '03 Protege5 with 236,000km on it, and I've been dealing with a P0300 misfire problem as long as I've had the car. The misfire is extremely random, and it will be fine for about two months, and then it will misfire for...
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