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  1. General Discussion
    Throwing P0300/303/304 codes for random misfire and cyl 3/4 misfire and 2 mechanics have already failed to diagnose. Car runs normal after clearing the codes and resetting ECU on cold start but codes will come back at warm start or warm idle. Warm start/idle is also very rough, guaranteed...
  2. Basic Help & Repair
    Hey I have a 2001 Lexus is300 that is now throwing a misfire code after I did some work on it. the car was leaking pretty bad out of the valve covers so I changed those and figured I’d do the plugs well I’m at it. I put NGK iridium ix plugs in and also replaced the wires with Ngk wires. The car...
1-2 of 2 Results