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98 22re random misfire

Discussion in '4 Cylinder' started by Repubconserv, May 1, 2019.

  1. May 1, 2019 at 5:21 PM
    #1
    Repubconserv

    #1
    Repubconserv [OP] Member

    Joined:
    Jan 20, 2019
    Member:
    #280006
    Messages:
    5
    Gender:
    Male
    Vehicle:
    1998 4runner 2.7L
    Hello everyone, I have a 98 3rz 2wd that has been having random/intermittent misfires on cylinder 1 (p0301), and multiple cylinder misfires (p0300, which usually happens in conjunction with p0301. I never just get p0300). The misfires happen at both low and mid rpms(idle to 2500 rpms) and low and high speeds it also idles rough.


    So far I replaced the , spark plugs, plug wires, air filter, cylinder 1 fuel injector, fuel filter, pcv valve.

    I cleaned maf sensor, throttle body.

    Ive checked the egr valve, it does not seem like it is sticking, swapped 1&4 coil pack with 2&3, I have tried carb cleaner/propane vacuum leak test

    I am at a loss... can anyone suggest the next best place to look?
     
    Last edited: May 1, 2019
    Repubconserv, May 1, 2019
    #1

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