Dear ZTH members....
im driving a putra...previously there is no prob with this engine....just usual prob of the stepper motor with bad bad idling....
suddenly there is engine check light out...when i plug in diagnostic tools...my air flow sensor and also TPS faulty....after change these 2 sensors....and also a used stepper motor....everything was ok at first....suddenly one weird problem came out...
occasionally the idling will suddenly go up to around 3000rpm and refuse to go back to normal idle....sometimes i rev til 6000rpm for about 15 mins only the idling will slowly go back to normal....and sometimes it wont go back to normal but go below 1000rpm....
even i try adjust my timing or idling screw on the throttle body...it still stays at 3000rpm at idling and refuse to go back to normal.....and when this happens...i have knocking (or pinging) between 1000rpm to 3000 rpm during driving everytime i change gear....
hope u can give some tech advice on how to solve this prob...many thanks in advance...
Cheers....
im driving a putra...previously there is no prob with this engine....just usual prob of the stepper motor with bad bad idling....
suddenly there is engine check light out...when i plug in diagnostic tools...my air flow sensor and also TPS faulty....after change these 2 sensors....and also a used stepper motor....everything was ok at first....suddenly one weird problem came out...
occasionally the idling will suddenly go up to around 3000rpm and refuse to go back to normal idle....sometimes i rev til 6000rpm for about 15 mins only the idling will slowly go back to normal....and sometimes it wont go back to normal but go below 1000rpm....
even i try adjust my timing or idling screw on the throttle body...it still stays at 3000rpm at idling and refuse to go back to normal.....and when this happens...i have knocking (or pinging) between 1000rpm to 3000 rpm during driving everytime i change gear....
hope u can give some tech advice on how to solve this prob...many thanks in advance...
Cheers....