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idoling down like car is going to cut off. not doing all the time. sometimes car is ffine.
Optional Information: Year: 01 Make : Lexus Model: is300 Engine: 6 cyclinder Already Tried: computer O'Reily
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Are you getting a check engine light or any codes?
Does it tend to do this when you are slowing down or coming to a stop?
check engine light is on and when speed is up car straightens out stopped or slowed down runs rough like out of timing
Have you checked the codes?
yes p1346
There are three things that can be, the timing belt has jumped, the belt is stretched or the ECM is the problem.