Question about 1991 Lexus LS 400

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1991 lexus ls400 doesn't accelerate - 1991 Lexus LS 400

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  • yadayada
    yadayada May 11, 2010

    what trouble codes are stored in memeory?

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  • 355 Answers

Clean, inspect and, or, Replace your crank sensor or, crank sensor wiring A loose crank sensor bracket or, a start relay has caused this before

Posted on Jun 15, 2009

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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


I had the same problem with my 1992 LS400. My Lexus mechanic fixed it by replacing the MAF(Mass Air Flow).

This used to drive me crazy when the weather was hot.

Oct 25, 2010 | 1991 Lexus LS 400

2 Answers

My lexus ls400 1991 the two electri fan all time is on


Either the temperature sensor on the radiator, or the relay is bad.
Pull a wire off the temperature sensor on the radiator.
If it stops the fans, then the sensor is bad and the relay ok.

Jul 19, 2010 | 1991 Lexus LS 400

1 Answer

1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, hower if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


Wish I had an answer - sounds very much like a problem I am having with my '92 LS400. I have a parts car, and have changed out the ECM, fuel pump, injectors, fuel pilter, fuel pressure regulator, ran the can with exhaust unbolted (check for clogged CATs, checked out my timing belt for slippage amoung other things, and nothing works. I have no check engine light on. Do you?


Jun 30, 2010 | 1991 Lexus LS 400

1 Answer

My 91 lexus ls400 stopped firing up. It turns over but no go.


check/change the crank sensor and check your ignition module

Jan 15, 2010 | 1991 Lexus LS 400

2 Answers

1991 lexus ls400 power steeing slowly got hard to


As mentioned check ps fluid. If it wines when turning and still no power then the pump is internally bad.. If the fluid is dissapearing fast then its a hose or most likely a leaking rack& pinion assembly..

Nov 11, 2009 | 1991 Lexus LS 400

1 Answer

Replace/fix starter on 1991 Lexus LS400


Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .

Aug 07, 2009 | 1991 Lexus LS 400

1 Answer

R & R 1991 Lexus Ls400 Gear shift knob


slide the lower part of shifter handle down and you will find two screws, but there is 2 wires coming in from center console for overdrive button.you have to remove the center console cover and remove the 2 wires from connector and then pull up threw handle.when you go back together you will have to guide them back threw the handle.

Mar 11, 2009 | 1991 Lexus LS 400

4 Answers

Dash lights


What is the light on my lexus ls400 that looks some what like a dome what does it mean

Aug 13, 2008 | 1991 Lexus LS 400

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