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Weird vtec problem. Please help..

Discussion in 'General Tech and Maintenance' started by 1slowEF, Feb 19, 2008.

  1. 1slowEF

    1slowEF New Member

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    So I bought a 91 Civic with a 94 GSR swap. Vtec will only work if directly connected to a toggle switch and will bog in and out of vtec at around 6k +. Always done this since I've had it. Any ideas?


    Things changed/checked.
    Oil is fine.
    Rewired vtec and other sensors.
    Changed vtec selonoid.
    Tried other virgin/chipped ecu's.
    Running str8 pipe, so no cat.
    And only CEL on throwing is 6 Engine coolant temp sensor, and thats because it's not plugged in.


    Things that I think can cause the problem.
    Preety bad dented oil pan.
    Don't know the condition of either oil pump or oil pick up.
    And maybe fuel, even tough fuel gauge reading 50 at idle.

    Please help..:mad:
     
  2. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    weird it sound like it dont have a vtec ecu,,
     
  3. 1slowEF

    1slowEF New Member

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    im running a chipped p28, and have ran other chipped p28's.
     
  4. 1slowEF

    1slowEF New Member

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    could that be causing the boging?
     
  5. hatukazi

    hatukazi ambitious...but rubbish

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    if you dont plug in your coolant temp sensor you will not have VTEC because the car will be in limp mode.
     
  6. 1slowEF

    1slowEF New Member

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    Fixed the sensor, so no more CEL. Also vtec works propely now, no more vtec button. But is still has the same problem..:(
     
  7. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    and what problem is that
     
  8. 1slowEF

    1slowEF New Member

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    bogging in and out of vtec..while in vtec..
     
  9. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    id try checking your oil pressure
     
  10. 1slowEF

    1slowEF New Member

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  11. AHHVTEC

    AHHVTEC Well-Known Member VIP

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    a oil pressure gauge
     
  12. 1slowEF

    1slowEF New Member

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    were do i connect it to?
     
  13. GSTurbo

    GSTurbo New Member

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    i had the same problem with my b17, could never figure it out, made no sense
     
  14. 13PROJECT240SX

    13PROJECT240SX New Member

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    Umm Ummm Do U Feel The Motor Has Lost Power When U Drove A Civic W/ 94 Gsr Motor Swap ? Cause I Had A 95 Honda Civic Coupe W/ 2001 Acura Gsr Motor Swap.. So 1st All I Want To Know If U Feel The Motor Don't Give U A Power On The Wheel ?
     
  15. 13PROJECT240SX

    13PROJECT240SX New Member

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    Umm Ummm Do U Feel The Motor Has Lost Power When U Drove A Civic W/ 94 Gsr Motor Swap ? Cause I Had A 95 Honda Civic Coupe W/ 2001 Acura Gsr Motor Swap.. So @ 1st All I Want To Know If U Feel The Motor Don't Give U A Power On The Wheel ?
     
  16. GSTurbo

    GSTurbo New Member

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  17. 13PROJECT240SX

    13PROJECT240SX New Member

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    Ugh-huh what do you mean ?
     
  18. Superwho05

    Superwho05 New Member

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    my ls-vtec did the same thing, turned out to be an oil pressure problem. if you know your oil pump is good, try changing brand of oil lol. I know it sounds weird, but for some reason, Castrol GTX 10W-40 did the trick way better than Penzoil. I def. wouldnt go thicker than 10W-40 though
     
  19. LS_VTEC

    LS_VTEC you get the BRAKE

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    Is it wired to obd1 or is it the usual obd0 with the obd1 jumper harness? What ecu?
     
  20. 13PROJECT240SX

    13PROJECT240SX New Member

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    MOBILE 1 =)


    10w30 can use it on gsr ?
     
    Last edited: Feb 26, 2008
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