Recently my X300 have been having problems with idling...It shakes a little bit when im parked or when i come up to a stop sign/light. When i first checked it out to see what the problem could have been, i found the intake hose ripped from the MAF sensor to the intake, so i figured it must've been just a vacuum leak, got a brand new hose and replaced it, but unfortunately the problem was still there. when its idling, its fluctuating at a slow rate between (600-900 rpm). When i slowly take off sometimes, it sounds little bit of puttering (around 1000-1500 rpm) but when i get it up to speed, everything seems okay until i have to slow down for a light then the problem begins again. Anyways I'd like to get as much insight or any help/suggestions before taking it to a specialist.

 

How bad is "...a little bit..." ?

Over the last couple months I've had to replace all 6 coils to correct a fairly severe shaking on startup and when at idle. When remains is a come-n-go tremble at idle that the car has had for years.

Sometimes having the injectors professionally cleaned will help. Sometimes cleaning the throttle body will help.

Do you have any trouble codes?

Cheers
DD

 

I've tried cleaning the throttle body with carb cleaner when I replaced the intake hose recently, it doesn't tremble violently but it stills bother me knowing the car does not idle properly. Unfortunately no trouble codes yet although my check engine lights been on due to old smog pump n egr valve. Thanks for the tips, I'll consider getting the injectors cleaned professionally but I have a feeling it's a slight misfire but nothing is for sure until I get it diagnosed at a specialist.