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  1. Join Date
    Aug 2009
    Posts
    25
    #1
    Help mga sir. may time kase na kapag on ko ung AC biglang baba ung RPm idle nya 400-500 tapos pag umaandar na ganun padin pag mgbrake ako biglang baba rpm malapit na mamatayan ng makina. Ano po ba ang problem nito? Nadala ko na sa casa na overhaul na AAC valve, Maf sensor narewired na din, after a week biglang nagloloko nanaman, napansin ko din pag mainit na yung makina tapos pagpinatay ko and start ko na uli with AC on dun magloloko ung idle. tagal ko ng problem to, bago ko ibalik sa casa ulit ask lang po ako ng advise. Basta pag AC on lang Siya nagkakaproblema Parang walang power yung engine, pag off ok naman ung idle 700-800) na adjust nadin pala ung normal idle ganun padin biglang bumababa pag AC ON. Pahelp po..T_T

    (my time din na nangyari sakin biglang ayaw magstart tapos wait ko pa ng mga 30 minutes para magstart ulit, and yung speedometer ko din hindi accurate minsan, mga 40kph palang ako yung speedometer ko nasa 80kph na)

    my ride is nissan exalta 2000 sta matic.

  2. Join Date
    May 2009
    Posts
    1,990
    #2
    sir,
    you may check the belt tension ng AC belt baka mahigpit masyado. limit ng belt deflection is 1 inch with the force of the hand (say a 30 kg na pwersa). kung masyado mahigpit e nangongonsumo ng power more than the required power from the crankshaft pulley. this may not be the ultimate answer but i hope this helps. or you may check also the air hoses connecting the the carburetor and alternator. un ung nagmamaintain ng rpm kapag AC is on sir. nangyari kc un s pickup ko.kapag AC is on mejo wild ang vibrations.un pala e disconnected ung air hose connecting sa injector at s alternator.fyi

  3. Join Date
    Aug 2009
    Posts
    25
    #3
    ok thanks for that info. I'll try to check it nadin..

need advise! Bumababa RPM (500-400) When AC on, normal nya is 800