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89 crx jdm d15b hunting idle help please

Discussion in 'Civic and CRX - EF' started by purplepearldx, Mar 9, 2011.

  1. purplepearldx

    purplepearldx New Member

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    I swapped a d15b into my 89 crx dx, converted to obd1. Im having problems with the car bouncing or surging idle, from 1200-1600 rpm. I took the FITV apart, cleaned and tighten. I also cleaned IACV, then replaced with another. Bleed coolant system a million times now. I plug the hole inside the TB and no difference, i unhook the IACV and still no difference, now it will idle at 800 steady rpm fine, you give it a very little throttle and it starts surging, all vacuum lines are fine, checked with carb and choke cleaner, same with Tb and Im gaskets. I hardwired IACV to ecu, A9, blk/blu wire, and grounded the yell/blk. Ive fixed several cars with this problem before but this has got me. Seems like the IACV wiring is not right, but its not hard wiring a 2 wire plug.. any ideas?
     
  2. Briansol

    Briansol Admins Admin VIP

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    Is it throwing any codes?
     
  3. purplepearldx

    purplepearldx New Member

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    just a code for auto trans, which its obv a auto p28. it surges all the time, when cold and warm. Cant a FITV go bad? I cleaned mine and tightened the adj screw inside it, or whatever it may be..
     
  4. d-mon

    d-mon what r u compensating 4?

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    when i first put in my p28 auto, it surged like a mofo.
    converted ecu to manual, all better.
     
  5. FASTED9

    FASTED9 New Member

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    the iacv which is blue/yellow goes in a11 not a9 try that
     
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