Question about 1992 Lexus Sc 400

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Looking to buy 92 sc400... seller says was all power, then extreme loss of HP. I previously owned 95 sc400 and know what it should feel like. (extremely responsive) It will barely go, yet does not smoke at all. There is a heavy fuel odor. Almost has to be a sensor etc. telling computer wrong air/gas mixture or of that nature. No engine lights are on. Hard to sifer by sound as there is a manifold leak. Any help???

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Do yourself a favour and walk away unless you want to buy a big repair bill. Only a fool would consider buying a vehicle in this condition.

Posted on Jan 04, 2011

  • whoneedsthis Jan 26, 2011

    There are 4 oxygen sensors, 2 before and 2 after the cat converters that are supposed to be changed at 60k at nearly $100/ea. Replaced mine along with fuel filter recently and exhaust odor improved and much more responsive.

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  • Lexus Master
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Maybe the timing belt has slipped a tooth or two. That can cause the power loss and unburnt fuel odor you have, with no engine lights on.

Posted on Jan 04, 2011

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Posted on Jan 02, 2017

junkman1249
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SOURCE: Looking to buy 92 sc400...

the catalytic converter might be clogged

Posted on Jan 04, 2011

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