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    InkRedAble's Avatar
    InkRedAble Posts: 25, Reputation: 1
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    #41

    Feb 15, 2012, 04:09 PM
    So if the ecm is brand new.. what else could it be?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #42

    Feb 15, 2012, 04:11 PM
    It could be a bad ACG (ALT)(S) fuse in the under dash fuse box, a bad main relay, or a bad ignition switch. You told me, however, all fuses are good. If you want, check/replace the main relay and ignition switch. Usually, however, the ACG (ALT) (S) fuse or the ECM is the culprit. Make sure that fuse is not missing, as happened to a Naval aviation mechanic, on this site, when a friend removed it as a prank.

    New ECMs are only made by Honda and cost $1,000+. All others are remanufactured.
    InkRedAble's Avatar
    InkRedAble Posts: 25, Reputation: 1
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    #43

    Feb 15, 2012, 04:12 PM
    Yep they are
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #44

    Feb 15, 2012, 04:15 PM
    Is your's a new Honda ECM?
    InkRedAble's Avatar
    InkRedAble Posts: 25, Reputation: 1
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    #45

    Feb 15, 2012, 04:20 PM
    Supposivly it is
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #46

    Feb 15, 2012, 04:26 PM
    If so, it should have a 1-year warranty. Unless you zapped it with static electricity, it definitely should show 5 reference volts out of the box. I'd go back to him and ask for a refund.
    InkRedAble's Avatar
    InkRedAble Posts: 25, Reputation: 1
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    #47

    Feb 15, 2012, 04:55 PM
    Alrite I will.. ill get another one off eBay n check it out
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #48

    Feb 15, 2012, 05:10 PM
    Shop for price and warranty. I always try to get lifetime warranties with component parts, including ECMs. I installed a Cardone remanufactured ECM, with a lifetime warranty, in my Honda 6 years ago ($250).
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #49

    Feb 16, 2012, 06:40 AM
    Make sure you clean the main ECM ground, likely located on the thermostat housing. It's often a 3-wire brass connector. This could also prevent the ECM from working and the CEL going out.
    scrmndmon's Avatar
    scrmndmon Posts: 1, Reputation: 1
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    #50

    Aug 7, 2013, 07:36 PM
    I'm haven trouble with tke fire o my 92 prelude I have power to the plug on the coil but not past it I have a new dist a an everything init is new also a new cioil what am I miswsing
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