Originally Posted by nighthawk

I am getting a little irritated right now at my car and have an appointment to take it in on Wed.

Let me describe the situation...

When I come to a stop i notice the RPM's droop down then back up, but when they droop down (to about 500rmp) I feel a quick shudder then the car seems to "recover" itself and hold the idle at like 600 or so. It almost feels as though it is trying not to stall. This happens with the AC on or off.

Also when sitting at idle with the AC on I notice that every now and then I feel the car shake as the RPM drops and I assume its probaby the fan turning on...but I don't think it shoudl strain the engine like it feels like it is doing.

Also witht he AC off and just sitting there at a stop light I can feel the car vibrating.



Beside that problem, I am having a few other issues:

-Gap between silver molding that comes up to the bottom of the radio console.

-Rattle in passenger side (no idea where its comming from)

-mis-aligned front passenger bumper (lower valice part)

-white streaks that are rough to the touch ont he drivers leather seat


Is anybody else experiancing these issues?? Am I being over exagerated about these things.....because so far I am dissapointed with lexus build quality, which everyone seems to rave about.....

Originally Posted by sktn77a

Sounds like engine carbon build-up. There's a TSIB for this.

Originally Posted by CCJ22

Is there? I have an IS250 I thought that TSIB was for the 350's?
I see you have a 250 like me. By chance do you know the TSIB number?
Thanks so much