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about 20v svt iddle.....any sifu can help??

Discussion in 'Toyota' started by alex_khoo, Sep 24, 2008.

  1. alex_khoo

    alex_khoo Senior Member
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    im using 20vsvt....d problem is my iddle donno why start car at 1500-1800rpm ? izzit high?juz ori at all....then i try to reset ecu by juz take off the negative on battery...then d iddle back on normal...below 1000rpm...but after a few day then problem come back??wat d problem har!!!:hmmmm:
     
  2. GRexer

    GRexer GRexerâ„¢ KuzTomZ
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    Most probably got 2 reasons, vacumm leak, or dirty ISCV, look here on how to DIY cleaning your ISCV.

    But I think in your case, most probably is vacumm leak.
     
  3. dennisdreams

    dennisdreams Senior Member
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    agree with GRexer, sound a lot like vacuum leak to me. had a torn inlet hose once, idling never stays above 400. dirty ISCV would probly keep your engine up at 1.5K but won't go back to normal even if you reset your ecu
     
  4. chinozie

    chinozie Very Young Member... :D

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    i thought vacuum leak...idle will stay low...

    alex_khoo - does the high idling happened once a while or once happened it just stay like that, until you reset the ECU...

    P/S : no need to took of your batt terminal, just pull out the fuse in the main engine bay fuse box called "EFI"...that should reset your ECU, with reset your electronic component in your car...ie : radio, clock, etc etc...
     
  5. alex_khoo

    alex_khoo Senior Member
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    it hapen many time edi...but once i reset d ecu !the iddle back o normal juz 4 a few day or a week likk tat?..b4 i thought my throttle body dirty! so i go n clean it with throttle body cleaner..if vacuum leak how to know n check?i got install vacuum meter? can it be check?:confused:
     
  6. GRexer

    GRexer GRexerâ„¢ KuzTomZ
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    For my case, vacumm leak have some kind of effect of increasing idling, but not constantly, it's like when the throttle was suddenly close, the rpm will shoot up to like 1.5k-2k rpm for 5 seconds then back to normal, later only find out it's vacumm leak after i re-routed some stuff, was installing oil catch can and didn't know the catch can inlet was leaking, put the ear there can hear air going thru type of sound somemore :banghead:
     
  7. alex_khoo

    alex_khoo Senior Member
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    which 1 is EFI fuse?? coz my fuse box cover word cant see anymore!!!:banghead:
     

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