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LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

accleration problem

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Old May 15, 2007 | 05:12 AM
  #1  
siamiam's Avatar
siamiam
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From: alaska
Default accleration problem

hey i was wondering if any one would know whats up with my 92 LS400 with 79K miles on it

just recently my car would have a problem accelerating and running right when ever i tried to get on the gas, at around 4K to 5K rpms the car would hesitate and not want to accelerate most of the times its done that was when it down shifted and i was in the 45mph range

around town driving it does just fine, and i really dont get on the gas too much, mostly only when im getting on to the highway or passing a car.
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Old May 16, 2007 | 05:33 AM
  #2  
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siamiam
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From: alaska
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any sort of help would be greatly appreciated , the nearest place that can work on Lexus is 400 miles away
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Old May 16, 2007 | 07:37 AM
  #3  
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pito
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Have you dont a tune-up?

Did you change the fuel filter?

How about spraying out your throttle body with cleaner?

Start with the tune-up question and lets go from there.
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Old May 16, 2007 | 12:46 PM
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ii agree. do a seafoam treatment (do a search).

then change the spatrk plugs and wires.
not that i think the seafoam hurts the plugs.
a mechanic i told this too said, if anything,
the seafoam will CLEAN the plugs.

but at 80k, the plugs probably need changing if not
done already. plugs and wires do not cost a lot and
can work wonders.

do the little things before spending for the big things.
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Old May 16, 2007 | 12:47 PM
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and maybe the air filter and the fuel filter, too.
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Old May 16, 2007 | 04:17 PM
  #6  
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siamiam
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From: alaska
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thanks for the suggestions, i havent tried seafoaming it yet but i did change the plugs,wires and filters
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