navedj786 Posted August 8, 2012 Report Share Posted August 8, 2012 Hi, I own a 2001 s 500 and i am facing vibration while throttling and knocking while it's parked. i have got it checked through a mechanic and they said me the pulley is broken get it replaced but i don't think that can be the case as i feel it while the car is running even. Can someone suggest is it the pulley alone or can be a mixture of issue like Drive shaft, Pulley & Plugs or coil. thanks, Naved Link to comment Share on other sites More sharing options...
rustam Posted August 10, 2012 Report Share Posted August 10, 2012 Its too hard to advise w/o seeing the real vibration. If its body vibration while idle then it could be engine mounting. If its engine hesitation and pulsating vibration at regular frequency then it could be coil or spark plug. If its vibrating at certain specified speed only like 80-100 then it could be wheel balancing issue. If its vibrating while picking up car (accelerating only) then it could be air flow meter, air flow meter sensor or dirty air filter. I am not sure where the pulley is associated here. Better get a second opinion from decent garage w/o sharing the pulley part. Link to comment Share on other sites More sharing options...
navedj786 Posted August 10, 2012 Author Report Share Posted August 10, 2012 i already got it checked with a merc garage they said the mounting air flow censor and the catalyzer need to be replaced Link to comment Share on other sites More sharing options...
hemant Posted August 15, 2012 Report Share Posted August 15, 2012 i already got it checked with a merc garage they said the mounting air flow censor and the catalyzer need to be replaced how much are they quoting you for the Air flow Censor. Link to comment Share on other sites More sharing options...
navedj786 Posted August 15, 2012 Author Report Share Posted August 15, 2012 total 4500 Dhs with labor. and i believe air flow censor was 400 or 500 dhs used from japan and not new. Link to comment Share on other sites More sharing options...
hemant Posted August 18, 2012 Report Share Posted August 18, 2012 thanks bro and Eid Mubarak Link to comment Share on other sites More sharing options...
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