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    leonardc's Avatar
    leonardc Posts: 3, Reputation: 1
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    #1

    Apr 5, 2007, 10:38 AM
    97 civic will not start
    I have a 97 civic ex manual trans that will crank but not start. I have done all the tests that TXGREASEMONKEY has answered for other users.(excellent help!) CEL goes out after 2 seconds(does not come on again). Fuel pump hums, relay clicks. Tested spark on all four plugs. OK. Checked MAP, 4.9 volts at + and ground(K-Test). Checked voltage to ICM, 12.8. Installed new fuel filter and checked preasure. OK. All fuses good. Should I replace the ICM? If no good should I then go for the ECM? Please help!

    Leonard
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Apr 5, 2007, 12:13 PM
    Good job so far.

    . Did you check for codes?
    . Clean main ECM ground.
    . Have AutoZone check ICM and coil for free.
    leonardc's Avatar
    leonardc Posts: 3, Reputation: 1
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    #3

    Apr 5, 2007, 01:42 PM
    Thanks for response.

    Checked codes with reader. No codes.
    Not sure where main ECM ground is.
    I'll try Autozone.

    Thanks
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    Apr 5, 2007, 05:03 PM
    Main ECM ground is on the thermostat housing--look for 3 wires going into a brass connector.
    leonardc's Avatar
    leonardc Posts: 3, Reputation: 1
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    #5

    Apr 9, 2007, 11:12 AM
    I took the ICM to my AutoZone. They just got their new tester last week and it tested bad! Ran the test twice to confirm. New ICM was $110, installed and started right up.
    I cannot thank you enough for your help. All your postings and responses are great!

    Thanks again,
    Leonard
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #6

    Apr 9, 2007, 12:48 PM
    Make sure to coat the back of the new ICM with silicone grease or it won't last long.
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