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Civic lost power...

Discussion in 'Civic and CRX - EF' started by josh_crewdson@y, Oct 7, 2009.

  1. josh_crewdson@y

    josh_crewdson@y New Member

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    I have A 1990 Civic dx hatch, I was driving on the interstate one night last week, and she just lost power... No jerking, studdering or nothin... So i pulled the dizzy and replaced it, no go still.. I turned the lil gear on the back of the dizzy and every 1/4 turn the injector clicks and sprays fuel, the dizzy is good but I have no spark... could it be the computer? it has 242xxx miles on it, i have an 99 ex with 295xxx miles and haven't had any problems... i have power to the dizzy when the ignition is on.


    any help appreciated..

    thanks
     
  2. hunter4life

    hunter4life Rotary Man

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    Just because your dizzy is good doesn't mean you have spark...It's just one piece of the system and you check by a step by step process. First make sure your plugs are good (probably are), make sure your wires are good. I can't remember if you have a separate ignition coil, but if so check that next and make sure you have the proper voltage/power to it (the wires), use a mutlimeter, you can find this information in a haynes manual. If you don't have a coil and you have a ignition module/igniter (it's technically an igniter) make sure that is good. Then your back to your dizzy/cap/rotor etc. If you don't find the problem in any of these then MAYBE think your ecu is bad...I doubt it though, ecu's don't just fail like that without a reason.

    Note: I assume this engine is cranking over but you have no spark, if you here a click or have no power obviously check to make sure your battery is good, if it's a click it may mean you blew your main relay, which is often caused by a short somewhere, perhaps a wire to a sensor...

    Note #2: I also assume you know how to check for spark the simplest way is to pull out the plug and ground it somewhere, while someone cranks it over....
     
  3. josh_crewdson@y

    josh_crewdson@y New Member

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    Plugs are good. wires are good. ignition coil is in the dizzy, igniter is in the dizzy, those are new bc the dizzy is new.. Cap, and rotor are good. Engine turns over perfectly, and builds oil pressure.. Yes it does not spark at all. Grounded the plug cranked it, i even grabbed the wire and grounded myself.. Nothin, not even a slight shock..
     
  4. hunter4life

    hunter4life Rotary Man

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    Okay well if that's all good I'd being checking your engine grounds then..usually doesn't get this far...but definitely check your grounds, that could cause it..
     
  5. hunter4life

    hunter4life Rotary Man

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    Wait you grounded the wire to yourself? Are you insane are you trying to send a ton of voltage through your body???
     
  6. DESPAIN

    DESPAIN yep....mmhhm.......yep...

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    probly the main relay. that is the first thing i would check
     
  7. crxhfz6

    crxhfz6 Member

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    like hunter said check the grounds. i had the same problem in my 85 crx and it turned out a couple wires were loose
     
  8. josh_crewdson@y

    josh_crewdson@y New Member

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    I was f'n pissed, it was 12 am and i had to be at work at 4.. I've been shocked 5 times by plug wires before it's not voltage that kills you, it's amperage. I'll check grounds again.. The main relay is fine, like i said, it turns over perfectly just won't run.
     
  9. d16z6si

    d16z6si New Member

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    check the led light in your ecu
     
  10. josh_crewdson@y

    josh_crewdson@y New Member

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    grounds are good. will have to check led tomorrow
     
  11. 95EGCoupeVtec

    95EGCoupeVtec SOHC VTEC at its best

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    lemme know what it is bc i was having the same problem with my brother in law's 90 dx. we changed the dizzy and the ecu and it still won't go over 75mph. but, the previous owner ran a NOS wet kit with a 50 shot so the motor might be toast. idk tho.
     
  12. hunter4life

    hunter4life Rotary Man

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    main relay should be fine like you should...you would here a clicking sound.
     
  13. hunter4life

    hunter4life Rotary Man

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    You would know if you did a simple compression check...I reccomend it
     
  14. josh_crewdson@y

    josh_crewdson@y New Member

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    if the main relay wasn't good i wouldn't have fuel... i have plenty of that
     
  15. hunter4life

    hunter4life Rotary Man

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    Have you tried another ecu...just to see
     
  16. josh_crewdson@y

    josh_crewdson@y New Member

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    I haven't been able to try another ecu.. Could it be the alternator? Because it was whining for a few months before this.. Could it have fried up inside?
     
  17. d16z6si

    d16z6si New Member

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    i had a problem with this in my 88 crx and had to change the brain in the back of my fuse box
     
  18. hunter4life

    hunter4life Rotary Man

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    What would this have to do with spark???
     
  19. josh_crewdson@y

    josh_crewdson@y New Member

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    Brain in the back of the fuse box? You mean eld? I wouldn't think the alternator would have anything to do with spark either, i was just throwing the guess out there.. I'm pullin the kick panel off the ecu tomorrow.. If it's bad it'll have a red led on correct?
     
  20. josh_crewdson@y

    josh_crewdson@y New Member

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    Checked the ecu, it seems fine.. It throws a code if something is unplugged, then if i plug it back in and reset i have no blinking red led. It blinks once quickly when the key is turned to the on position then stays out... Any more ideas? Getting really pissed..
     
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