unusual vibration

[andrewbugs]

to all gurus. ask lang po. my pajero genII.5 (year '99) has an unusual vibration when rpm reaches 1750 to 2000, below or beyond that mawala na naman ang vibration. i tried to revv the vehicle at the same rpm when the vehicle is stationary (neutral) the same thing happen. the vibration though does not reach the body of vehicle (or cause vibration sa body) parang sa ilalim lang. Ano kaya ang problema? thanks

[dennis powell]

to all gurus. ask lang po. my pajero genII.5 (year '99) has an unusual vibration when rpm reaches 1750 to 2000, below or beyond that mawala na naman ang vibration. i tried to revv the vehicle at the same rpm when the vehicle is stationary (neutral) the same thing happen. the vibration though does not reach the body of vehicle (or cause vibration sa body) parang sa ilalim lang. Ano kaya ang problema? thanks

irty mo daw irev yung rpm na nakapark yung vehicle in neutral position kung saan nag appear yung vibration,at pagkatapos isa isahin mong tanggalin ang belt kung hindi sya serpentine.kahit serpentine ay okey lang yan,hindi masisira ang kotse mo dyan as long as naka park sya.tapos irev mo na naman.iisolate mo lang yung problema and just to make sure na less than 7 minutes or less lang ang pagpaandar mo ng kotse mo.

kung nawala yung vibration,isa sa mga dinadaanan ng belt ang cause ng vibration. pwedeng loose water pump pulley,tensioner or pulley ,alternator pulley,etc. icheck mo lang baka isa sa kanila nawalan ng bolt.

kung andyan pa rin,icheck mo yung crankshaft vibration damper,kadalasan ay nakaatach yan sa crankshaft pulley or check mo rin baka loose na.

or baka engine performance na yan,check mo baka restricted nag mga hoses nyan,specially pcv.

[boyT]

to all gurus. ask lang po. my pajero genII.5 (year '99) has an unusual vibration when rpm reaches 1750 to 2000, below or beyond that mawala na naman ang vibration. i tried to revv the vehicle at the same rpm when the vehicle is stationary (neutral) the same thing happen. the vibration though does not reach the body of vehicle (or cause vibration sa body) parang sa ilalim lang. Ano kaya ang problema? thanks

Check the engine support. Usually, pag sira na ito, mas magalaw ang engine pag higher revs.