# Lexus with no power

**URL:** <https://community.cartalk.com/t/lexus-with-no-power/30563>\
**Category:** Maintenance/Repairs\
**Created:** [May 16, 2009, 9:43pm UTC](https://community.cartalk.com/t/lexus-with-no-power/30563 "2009-05-16T21:43:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alexv6](https://avatars.discourse-cdn.com/v4/letter/a/a9adbd/32.png) [@alexv6](https://community.cartalk.com/u/alexv6)\
**Post date:** [May 16, 2009, 9:43pm UTC](https://community.cartalk.com/t/lexus-with-no-power/30563/1 "2009-05-16T21:43:03Z")

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i have a 1992 lexus ls400 that everytime i try to go on the freeway or step on the gas hard the car would choke. i had replaces the trottle, the timing belt and the muffler but noting works . what might be the problem.

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**Author:** ![Xebadaih](https://avatars.discourse-cdn.com/v4/letter/x/d07c76/32.png) [@Xebadaih](https://community.cartalk.com/u/Xebadaih)\
**Post date:** [May 16, 2009, 11:22pm UTC](https://community.cartalk.com/t/lexus-with-no-power/30563/2 "2009-05-16T23:22:58Z")

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Have you tested the vacuum? Is there back-pressure at the catalytic converter? When was the last time a basic tune up was done?