I have a 99 es 300 with 90k. recently when I start the car, I need to keep my foot on the gas or it will stall. it is fine once i get going . Im concerned because usually one turn of the key and it fires right up. Please, if anyone knows anything about this type of problem , please respond, thanks in advance

 

Could be a couple of things.....Fast Idle Valve or Idle Air Control Valve.....both are located on/near the throttle body.

 

It looks like us both have the same problem. Check this thread out https://www.clublexus.com/forums/sho...d.php?t=298069

 

BIG BUMP.. I just started to have this problem myself. Also have you seen the price of a need IACV??? $256.00 !!!!!!!

 

Its cheaper for shops now a-days to just replace an IACV than clean it, which is probably all it needs sadly.

 

How do you go about cleaning it?

 

http://us.lexusownersclub.com/forums...=throttle+body

The 3vz's have a coolant line running through them, so im just too lazy and uneducated to clean mine, but that post should be all the help you need.