Question about Lexus LS 400

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1991 lexus ls400 car wont start. got someone to look at it and they said it was the mass air sensor. got a used one car still wont start.

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  • drayton76 Oct 08, 2008

    I have a 1993 LS400 I got some bad gas and ever since the car won't start.I had the gas tank cleaned and new fuel pump and car won't start. As soon as I crank my car, it shuts off immediately.

  • Anonymous Nov 17, 2008

    im having the same problem... but the car would start if i floored the gas pedal. still runs really rough. i believe the problem may be the distributor rotor button... looks really corroded

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  • Lexus Master
  • 60,960 Answers

Well first run a self test on the computer for trouble codes,l then based on those codes you replace affected parts, but first does it have fuel pressure? how about spark?

Posted on Sep 20, 2008

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1 Answer

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

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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.
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Jul 19, 2010 | 1991 Lexus LS 400

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Loss of power on a lexus ls400


the ls400 had problems with the mass air flow meters acting up. You will have to have it tested because they are not cheap. U can get a used one for around 100.00. They cause the car to boog down while trying to accelerate. Check the wires going to the mass air flow to make sure they are making good contact. I have seen this cause a problem. The mass air flow is located on the hose that goes to the throttle body. I have a good one for a 94 to bad you do not live in texas. leave comment

Jun 27, 2010 | 1992 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

I have a problem with my1993 Lexus LS400. It doesn't have any power at all. I have had the mass air flow sensor replaced, and new cadlydic converters put on and still no power. It start up without a...


it needs an ignition coil, find out which cylinders it is not firing on and replace that coil, it has 2 coils one per 4 cylinders ur car is running on 4 my name is joe all auto key west 305 292 6662

Oct 17, 2009 | 1993 Lexus Ls 400

1 Answer

My car starts but turns off rite away?


try the computer. known for going bad.

Jul 01, 2009 | 1991 Lexus LS 400

1 Answer

1991 lexus ls400 doesn't accelerate


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

Jun 15, 2009 | 1991 Lexus LS 400

1 Answer

1990 Ls400 IAT sensor?


is located in maf sensor, near air filter

Jun 14, 2008 | 1991 Lexus LS 400

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