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From 1992 to 1996, chief engineer Kosaku oversaw development of the XV20 Lexus variant alongside the XV20 Toyota Camry programme under project code 416T.

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My es 300 runs rough(jerks or seems to miss) under exceleration

i have a 2000 ES300 167000 miles a very well kept car, it seems to miss or surg or loose power when you accelerate the car, and when at freeway speeds constantly sputters and misses the vehicle dose not ever throw a trouble code. when the car is cold start up and it operates perfectly as soon as it reaches operating temp it starts to run bad, it always idles smooth and at full throttle it works great. i have done everything to try to cure this problem new plugs, coils, VVT oil control solenoids and filters, cleaned the oil pump pick up tube in the oil pan (very clean in the engine no sludge ) new oxygen sensors... i need some advice running out of ideas... thank you..

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Hi Mike,

What brand spark plugs did you use? Did you gap check them? Also cleaning the throttle body can help with this kind of issue.

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make sure that that the sparkplugs are OK and have a mechanic check the engine timming belt (not a DIY job), i have seen a similiar situation when a timming belt was replaced with one that had just one more thooth..

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Inspect vacuum hoses and intake plumbing for leaks/cracks. Other possibilities include a dirty throttle body, dirty/malfunctioning mass airflow sensor, and EGR valve.

FYI-I have a '99 ES300 with 240,000 miles.

Check out this Lexus forum for a wealth of helpful repair info.

http://us.lexusownersclub.com/forums/for...

This thread may help.

http://us.lexusownersclub.com/forums/top...

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Test the coils again. I personally have had this issue twice when I have replaced two coils that were bad with new ones. The new coils I purchased were bad from the factory. This happened to me on two separate occasions. You can also check your O2 sensors. That could be an issue or a clogged catalytic converter.

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mike bailey sera éternellement reconnaissant.
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