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Thread: code 71, 72

  1. 08-29-2006, 02:38 PM #1
    K24cb7coupe
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    Default code 71, 72

    miss fire in cylinder 1 and 2. What could cause this? I just replace the spark plugs and wires, coil, rotor, and cap. The car starts up fine after it has been sitting for a while, once it heats up it acts up. It idles at 500rpm and lobes a little and if it sits idling long enough it will shut down. At stop lights i have to hold the brake and accelerator to keep the car running. someone please help me before i go crazy!
    About to approach beast mode
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  2. 08-29-2006, 02:58 PM #2
    brads94accord
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    well i had that problem...i had really bad idle surge and really rough idle..turned out to be my EGR valve, i removed it and put in a block off plate and now my car idles perfect. did your plugs have any oil on them?
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  3. 08-29-2006, 05:38 PM #3
    3kgtdrvr
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    u sure u have the right firing order?
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  4. 08-29-2006, 05:40 PM #4
    NoPainT
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    hhmmmm.... I thought you'd fix it by now. Good luck man
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  5. 08-29-2006, 06:04 PM #5
    SLow_POke
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    Quote Originally Posted by 3kgtdrvr
    u sure u have the right firing order?
    x2
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  6. 08-30-2006, 05:11 PM #6
    K24cb7coupe
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    the firing order is correct, i am going to try the egr block plate. half of a day it was fine then shit just went down hill
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  7. 09-24-2006, 11:21 AM #7
    .blank cd
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    wont that block plate cause you to fail emissions tho?

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  8. 09-24-2006, 11:27 AM #8
    3kgtdrvr
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    ...not if u swap it back before u go
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  9. 09-24-2006, 06:44 PM #9
    civicduty
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    have you tried a differnet ecu had one do that and it ended up being a bad ecu.
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  10. 09-25-2006, 01:32 PM #10
    brads94accord
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    Quote Originally Posted by JDMCD6
    wont that block plate cause you to fail emissions tho?
    depends if you are OBD1 or 2...right now running my OBD1 ecu i dont throw a code for it...im sure i will with my obd2 ecu in...
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  11. 09-25-2006, 05:25 PM #11
    3kgtdrvr
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    ^u would fail either one. cel for obd2 and ur NOx would be wayyy to high on an obd1 car
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