Question about 1994 Lexus LS 400

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Lost horsepower on 94 Lexus LS400 after warm up.

Car went into limp home mode and used a lot of fuel. I had driven it about 30 miles before this happened. I have replaced the right bank o2 sensors and will replace the two on the left soon as they arrive. the DENSO set of o2 sensors only included 2. Am I on the right path ?

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  • yadayada
    yadayada May 11, 2010

    O2 sensors will NEVER cause a loss of power PERIOD!!

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O2 sensors WILL NEVER CAUSE A LOSS OF POWER, u are looking in the wrong place, sounds like a fuel starvation problem or a defective MAF, the O2's are just seeing this and setting a code..

Posted on Jun 29, 2009

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It will not go pass 30


check the fuel filter, if it plugs up this can cause no fuel flow to engine. Also check the air filter and the plugs, and wires, if not the filter. It can be most anything but hope this helps. or it may of went into limp mode, if so call or take it to a garage.

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I have a 2000 S Type with 100,000 miles that I bought about 4 months ago. Within 2 weeks of purchase, the Failsafe engine light kicked in and went straigh into "limp home mode" I did some...


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Car doesn't respond when gas pedal is pushed when it is driven in hot weather; engine does not stall (1991 lexus ls400


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While driving recently I lost power and the car turned off, but there was enough juice for me to make it the few blocks home. The next day I tried to start but could not and still cannot. The lights work...


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