nich Posted October 10, 2006 Share Posted October 10, 2006 I just bought a 2007 IS250 last week. Whenever i drive it and put my foot on the brake or even let off the accelerator the tach shoots up randomly 500 rpm and comes back down. It almost like the tach is floating. I took it to the dealer on monday they said the car is just downshifting. I am skeptical. Whenever i brake its almost that i'm fighting the engine power to brake the car. Are all IS like this. the engine shouldn't be reving when i put the foot on brake downshifting or not. Its almost like the engine is undisiplined. The jump is only a little bit. Can someone plse help me out. Quote Link to comment Share on other sites More sharing options...
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