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b18a1 surging at speed...

Discussion in 'HYBRID -> ED-EF / DA' started by EFDX, Sep 7, 2010.

  1. EFDX

    EFDX New Member

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    cruising at highway speed 3000-3500 rpm the engine surges about 50 rpm every 2 seconds or so. it seems to have a rythem to it. the engine seems to run good otherwise. it has done it since the install (90si h/b) about 3 weeks ago. any ideas anybody?
     
  2. 78civic

    78civic Junior Member

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    NW MS, Y'all
    What 'install'? Give more detailed info..

    New cap/rotor/plugs/checked the wires?
    New fuel filter? Adjustable regulator that wasn't 'adjusted'?
    Orig pump with over 150k miles on it?
    Engine/trans grounds free from paint (sometimes peeps get all goofey with the paint and restrict 'good' grounding)

    Change/swap ECU with a goon known one.

    E
     
  3. EFDX

    EFDX New Member

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    it's a 90 si hatch with a 91 b18a1, new dizzy, new sparkplugs, new wires, new fuel filter, straight swap, engine has DC 4-2-1 headers, no cat, 2inch pipes into a flowmaster muffler, grounds are good (no paint/rust)
    what is an "Orig pump"
     
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