jsch222

Over the last few months my 07 IS250 AWD would have a flutter in the engine when i pulled up to a stop light/stop sign. The tach would drop below 500 rpm and you could feel the car shake. I never had a true pattern when it happened, ie when the engine was cold or getting off the Interstate. I have always put premium (93 Octane) in it since the first day. I currently have 32,000 miles. I took my car in yesterday to have it looked at and they seem to think it may need the Valve Springs replaced. Although the mechanics could not duplicate the problem the adviser said that this was a known problem on the 06 IS250's. Has anyone had this problem on the 07? I am concerned about replacing the valve springs on a whim that it "may" fix the problem. Any thoughts?????

I had the TSB done over 3,000 miles ago. I never noticed a change after the install.

I had the Brake pad TSB done and I haven't noticed any change in the amount of brake dust being produced. I think they put original pads back on. I attached a picture. On one of the spokes i wiped a clean spot. the amount on the rim is terrible! Please let me know if this is what yours looks like after the TSB. I have a 2007 IS250 AWD. Thanks. J

HELP! I was driving a couple days ago 55 mph down an off ramp and when i hit the breaks to stop my is250 AWD down shifted really hard into 4th gear taking the rpm's up to 4,000. has anybody else experienced this? I take the same route every day and now the car does this on every off ramp you hit your brakes on if you are driving about 50 mph. The car NEVER used to do this until a couple days ago? I am not in performance mode, nor am i using the paddles. It is a 2007 IS250 AWD with 18,000 miles. Any help or input would be greatly appreciated! J

Bartkat you are the man.... I appreciate your help and am indebted to you. I will bring this with me to the dealer in case they give me some problems. Can one of you to email me the pdf? I am having trouble getting off the website, and i have the same problem. Thanks!