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Thread: Idle control solenoid A20A4

  1. #1
    DX User
    Join Date
    May 2015
    Vehicle
    3rd gen Accord 1989 A20A4, 5spd (EX-i)
    Location
    Auckland, New Zealand
    Posts
    9

    Idle control solenoid A20A4

    So my '89 Accord EX has decided to stop idling recently, and I've troubleshooted it down to a solenoid which can't decide whether it's open or closed (linking inlet to throttle body).

    Unfortunately because in NZ where I live, nobody seems to have these old Accords -- finding OEM parts is incredibly difficult. I've bypassed this solenoid and the engine is running fine (albeit idling at 1100rpm warm), however I know that this isn't the best sort of fix.

    Is it worth even bothering to fix this issue? I'm considering getting a B20 or maybe even H22 swap at some point in the future, and since the engine at least actually runs I guess I'm fine until other issues arrise.

    I've looked on ebay but I don't seem to be using the right terminology to find this part.. I'm happy to upload an image of the part in question.

    Thanks in advance
    DSPhat



  2. #2
    3Geez Veteran MessyHonda's Avatar
    Join Date
    Feb 2006
    Vehicle
    89 LX-i(5speed)
    Location
    Bay Area
    Posts
    22,201

    Re: Idle control solenoid A20A4

    try to take if off and clean it with brake clean. Mine had build up inside and once I cleaned and flushed the cooling system it did not have the same idle problem.

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned

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