ad33 Posted August 1, 2007 Share Posted August 1, 2007 Hi All, I have been reading the lexus service manual in addition to this forum to troubleshoot sluggishness problem with my ES300 1995. I have cleaned Mass Air Flow sensor. It didn't help much. Before I do more I wanted to ask if the following observation narrows down the things I should check. Car is noticeably more sluggish when it is a hot day. In addition, there is noticeable hum from the engine when I accelerate. There is no hesitation while running. There are no starting problems. Does this point to a specific sensor? Many thanks for your time. AJ- Quote Link to comment Share on other sites More sharing options...
problemsolver Posted August 3, 2007 Share Posted August 3, 2007 I am having a similar problem with My ls 400 91 when its hot and the ac is on it looses power and wont regain power until the weather cools off. I still havent found a solution yet. Hi All,I have been reading the lexus service manual in addition to this forum to troubleshoot sluggishness problem with my ES300 1995. I have cleaned Mass Air Flow sensor. It didn't help much. Before I do more I wanted to ask if the following observation narrows down the things I should check. Car is noticeably more sluggish when it is a hot day. In addition, there is noticeable hum from the engine when I accelerate. There is no hesitation while running. There are no starting problems. Does this point to a specific sensor? Many thanks for your time. AJ- Quote Link to comment Share on other sites More sharing options...
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