Q&A

When my 1999 lexus rx 300 comes to a stop, extremely rough idle. Just recently had spark plugs replaced on the car, and the problem still exist. Once you take off, takes a few seconds before you get to your desired speed. There is no check engine warning lights on. After a recent oil change, the hose to the air filter was not reconnected. Several days later is when the problem began. I have been told it is the timing belt, idle air bypass, oxygen sensor, mas sensor among other things. Any suggestions where to start would be greatly appreciated.