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    zgirl's Avatar
    zgirl Posts: 1, Reputation: 1
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    #1

    Feb 24, 2007, 05:59 PM
    '91 honda civic - weird idle - surge
    I've just purchased a honda civic, 1991 hatchback. After it warms up - the idle surges up and down - pretty drastically. I've experienced this in an '89 as well - so I'm wondering if it's a honda civic specific issue - and what might be causing it.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Feb 24, 2007, 06:56 PM
    1. Check vacuum line connections.
    2. Check each cylinder's compression.
    3. Check for codes.
    4. Check Idle Air Control Valve.
    5. Check idle rpm and ignition timing.
    6. Test/replace igniter.
    7. Check ECM.
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