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    andrea_willie's Avatar
    andrea_willie Posts: 4, Reputation: 1
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    #1

    May 24, 2011, 05:12 PM
    1990 honda accord throbs and pulses while idling or accelerating..
    1990 honda accord throbs and pulses while idling or accelerating.. car drives fine until it warms up.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    May 24, 2011, 05:20 PM

    I would replace the ICM and coil, if they have not been replaced in the last 120,000 miles or 10 years:

    https://www.askmehelpdesk.com/cars-t...tml#post265896

    These components break down under heat.
    andrea_willie's Avatar
    andrea_willie Posts: 4, Reputation: 1
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    #3

    May 24, 2011, 05:41 PM
    Comment on TxGreaseMonkey's post
    Is the ICM the main relay?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    May 24, 2011, 05:49 PM

    No. The Ignition Control Module (ICM) is located inside the distributor, while the main relay is located under the dash.
    andrea_willie's Avatar
    andrea_willie Posts: 4, Reputation: 1
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    #5

    May 24, 2011, 06:21 PM
    Comment on TxGreaseMonkey's post
    OK thanks Im going to check into that.. I was just wondering about the main relay because I replaced it like 5 years ago, and wasn't sure if I would fail that fast...
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #6

    May 24, 2011, 06:23 PM

    Main relays should last a good 10 years.
    andrea_willie's Avatar
    andrea_willie Posts: 4, Reputation: 1
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    #7

    May 24, 2011, 06:27 PM
    Comment on TxGreaseMonkey's post
    Good to know! And thanks I really appreciate it.. :)
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