Car Alternator or Battery Issue

Discussion in 'Car Talk' started by Mitevo7, Feb 8, 2019.

  1. ^pomen_GTR^

    ^pomen_GTR^ Senior Member
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    simply need to drive faster :rofl: :driver:
     
  2. vr2turbo

    vr2turbo 5 Year | Silver
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    Open road can lah, traffic jam how?.....hhahahhahahhahahaha
     
    ^pomen_GTR^ likes this.
  3. ^pomen_GTR^

    ^pomen_GTR^ Senior Member
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    rev2 the car.... :rofl:
     
  4. vr2turbo

    vr2turbo 5 Year | Silver
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    Next car think you challenge him for race.....hhahahhahahha
     
  5. gunnerzz

    gunnerzz Well-Known Member

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    no need to rev2, use lower gear.
     
  6. sweelt

    sweelt Well-Known Member

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    my wira cruising like 13.5V with aircon ON or OFF.
    When idle, aircon compressor kick in it drop to 13.0V (rpm also drop) for short moment then regain 13.5V normal idle 900rpm.
    May i ask , is it aircon compressor problem or "berat" ? Idle rpm take a dive to 600rpm momentarily.
     
  7. parakey

    parakey Senior Member
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    A car at idle is not at it's most powerful rpm. So when compressor kicks in, it places an additional load to the resting engine. Hence rpm drops momentarily till ISC takes effect and raises the rpm to compensate
     
  8. vr2turbo

    vr2turbo 5 Year | Silver
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    Yes, due to extra force required to turn the compressor, that is hwy need the FICD/IACV to increase the idling speed......
     
  9. sweelt

    sweelt Well-Known Member

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    nothing wrong with the compressor lah ... ? jimat
     
  10. vr2turbo

    vr2turbo 5 Year | Silver
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    Compressor Nothing wrong, just that since the compressor needs extra power to turn it, the engine idling drops before FICD compensate
     
  11. gunnerzz

    gunnerzz Well-Known Member

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    Thats the nice way of putting it. The truth is that your engine is not powerful enough...hihihi
     
  12. sweelt

    sweelt Well-Known Member

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    aiyooo....:bawling:
    am ok with current engine, cukup dah.
     
  13. vr2turbo

    vr2turbo 5 Year | Silver
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    GSR woh.......hahhahahha
     
  14. Mitevo7

    Mitevo7 Senior Member
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    Hi All,

    Since sweelt talked about A/C, just want to check, if alternator has not enough juice, will that affect the timing of A/C compressor kicked in? I found out that the A/C is slow to come in during slow traffic, where RPM constantly stays below 2k rpm. Once got on the free way and the A/C works just fine.

    Thanks,
    Ken
     
  15. gunnerzz

    gunnerzz Well-Known Member

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    Not enough juice..
    Worts if the compressor clutch is worn out as the compressor wont engage.
     
  16. vr2turbo

    vr2turbo 5 Year | Silver
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    Have to check whether the clutch not engaging or your air con refrigerant is low. When refrigerant is low it does not cool fast either especially in slow traffic. Once you speed up the compressor turning fast so the refrigerant works faster and at the same time at faster speed the condenser gets cool faster also.....
     
  17. gunnerzz

    gunnerzz Well-Known Member

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    More evident in smaller engine with small compressor ie kelisa, kenari, kancil. Revving between 1500-1800 rpm during stationary will improve cooling which can be felt.

    Some ac system wont engage the compressor at all when ut detecs low refrigerant.

    My personal exp with waja that has worn out compressor clutch is it wont engage during jam. Once i rev above 2k rpm it will engage. temporary repair is modding the clutch which help for about 6 month before replacing the compressor.

    anyway, i suggest to tackel the current issue first.i bet it has something to do with it.
     
  18. vr2turbo

    vr2turbo 5 Year | Silver
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    Yup, there is a sensor, usually at the receiver dryer. This to help prevent compressor damage.....
     
  19. ^pomen_GTR^

    ^pomen_GTR^ Senior Member
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    or simply the compressor itself already worn out..


    where it doesnt have sufficient seal to compress and pump the refrigerant at low rpm.. hence it only good while moving at higher rpm...


    another cause is the ac fan speed at condenser is lower than it should be...so the gas pressure is too high and too hot and not working efficiently as it should be...
     
  20. Mitevo7

    Mitevo7 Senior Member
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    That's my suspicions but the clutch seems fine but i don't deny that the engine accessories have certain age on it. Will get it check out

    Thanks,
    Ken
     

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