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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1998 Lexus ES300 Question: Why does my Lexus have power surges between 1000 and 2000 rpm?
Answer #1Greg's Orange Auto (14613 Answers) , Orange, CA - (714) 361-9386globalhelper September 19, 2012, 06:21Master
do you have a service eng soon light on?
ReplyDenny C, September 19, 2012, 06:26Rookie
Replyglobalhelper, September 19, 2012, 06:47Master
could be the begining of a misfire that happens only under load. i think i would start by ck'ing for misfires
ReplyDenny C, September 19, 2012, 07:20Rookie
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?
Replyglobalhelper, September 19, 2012, 07:27Master
yes very possible
ReplyDenny C, September 19, 2012, 07:40Rookie
I will pursue that fix. Thank you.
Answer #2holston2008 September 20, 2012, 17:24Technician
i would check the throttle positon switch