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1998 Lexus ES300 Question: Why does my Lexus have power surges between 1000 and 2000 rpm?

 

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Denny C, 3.0L V6, Bemidji, MN, September 19, 2012, 06:19
 Rookie

The problem happens when the engine is warm or at least it is more apparent. Past 2000rpm the surges seem to disappear. It feels as though I am gently pumping the accelerator pedal. It may be more of power loss than a surge, it is difficult to tell.

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  • Answer #1

    Greg's Orange Auto (13388 Answers) , Orange, CA - (714) 361-9386
    globalhelper September 19, 2012, 06:21
     Master

    do you have a service eng soon light on?

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    Denny C, September 19, 2012, 06:26
     Rookie

    No.

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    globalhelper, September 19, 2012, 06:47
     Master

    could be the begining of a misfire that happens only under load. i think i would start by ck'ing for misfires

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    Denny C, September 19, 2012, 07:20
     Rookie

    If I start to accelorate or back off on the acelorator between 1000 and 2000rpm the surges seem to stop. It is only at a steady cruise that the surges happen. Would that be consistant with the beginning of a misfire?

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    globalhelper, September 19, 2012, 07:27
     Master

    yes very possible

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    Denny C, September 19, 2012, 07:40
     Rookie

    I will pursue that fix. Thank you.

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  • Answer #2

    holston2008 September 20, 2012, 17:24
     Technician

    i would check the throttle positon switch

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