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DOHC ZC- What does this code mean??

Discussion in 'Civic and CRX - EF' started by xXHondaBradXx, Aug 13, 2009.

  1. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    I swapped a dohc zc into my 91 civic si hatch. I looked at the ecu and it blinks 10 times, then 7 times, then 10 times, then 7 times!! Anyone know what this means?? Its the ecu from my 91 hatch.. Is it doing this because of the wrong ecu?? It still runs good.. I dont want to run into any probs before its too late.. Thanks!!!
     
  2. shadyman8

    shadyman8 EG9

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    this is the code for your intake air temp. sensor #10 and thorttle positions sensor and the reason it blinks again is because it repeats its self... there should be a break in between the the code flash.. but check your plugs and wires
     
  3. shadyman8

    shadyman8 EG9

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  4. INJEN78

    INJEN78 HS LEGEND

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    thats code 17...try resetting the ecu
     
  5. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    alright! thanks guys. i'm gonna check it out and update.
     
  6. B16RacerN2NR

    B16RacerN2NR Working Hard VIP

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    Did you get the motor with a broken TPS and have to add one yourself? If so, then you have to set it in the correct parameters using a voltmeter. The specs are .5v @ idle and 4.5v @ WOT. If the TPS was fine when you got the motor, it could have taken a shit or somethings up with the wiring. It's real common for the wires in our old ass cars to get brittle and start breaking away from the plugs. Same goes for the Intake air temp sensor...

    That's not 17. 17 would be 1 long blink then 7 quick blinks.

    Start your own thread...
     
  7. shadyman8

    shadyman8 EG9

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    Ya, thanks for the back up... for all 3 of these ppl that sounds correct
     
  8. jlicrx

    jlicrx Senior Member

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    OBD0 D-series ECUs (OP has a PM6) do not have long and short blinks - you just count the number of times it blinks, between pauses - 17 blinks is code 17, 20 blinks is code 20, 15 blinks is code 15, etc. - if you don't believe this, take a car with OBD0 D-series ECU that has no codes showing and unplug the EACV, start it up and when the check engine light comes on, shut it off and read the code - you will find that it blinks 15 times

    if it blinks 10 times, pauses, and blinks 7 times, it has 2 codes, one for code 10 and one for code 7 - if it blinks 17 times without a pause, it is code 17
     
    Last edited: Aug 16, 2009
  9. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    it blinks 10 times then pauses, then 7 times then pauses. and now my car is running like shit. it wants to bog out and stall. and the car jerks a little. any ideas?
     
  10. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    and no check enging light!!
     
  11. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    and when it idles the rpm goes up and down. like from 750 to 1000 to 750 to 1000, etc.
     
  12. B16RacerN2NR

    B16RacerN2NR Working Hard VIP

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    Got'cha. I didn't know d series used a different morse code style than B series. Goes to show i don't waste my time on the paper weight d series motors :ph34r: lol j/k
     
  13. jlicrx

    jlicrx Senior Member

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    code 10 is for the Intake Air Temp sensor - we usually see this on a new swap when the wrong connector is plugged into the IAT sensor - should be a white 2-wire connector with red with yellow stripe and green with white stripe wires - the 2-wire connector with blue and black/yellow wires shouldn't be connected to anything

    code 7 is for the Throttle Position Sensor - sensor could be bad or needing recalibrated or something wrong or loose in the wiring to the connector

    fix the codes, reset the ECU and the idle may resolve itself

    once you turn the key off, the Check Engine Light goes off and stays off until the ECU detects another problem - the codes still remain in the ECU until you reset it

    fluctuating idle could be caused by low coolant level, air pocket in the cooling system, vacuum leak, EACV not working correctly or MAP not working correctly
     
  14. xXHondaBradXx

    xXHondaBradXx 2 FAST 4 YOU!!

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    k. thanks... i resetted the ecu, and no codes...but it still idles funny..
     
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