Question about 1991 Lexus LS 400

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My 93 lexus ls400 keep turning off ever since i had a tuneup done. I notice that the ac condenser fan is not working but i dont run the ac.It doesn't read that it gets hot But it seem if the car g

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  • Lexus Master
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Be sure you check engine oil level often. The low oil sensor will disable the ignition. If you turn A/C on the cooling fan should run continuous, Check the fan relays. Make sure coolant level is correct at recovery bottle, never open radiator cap. A scald hazard exist, be careful. This car is old and complicated, and is beyond your skill level to repair. Try to inquire here for advice, whenever possible. Don't throw good money at bad money

Posted on May 27, 2017

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Posted on Jan 02, 2017

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mecanica03
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SOURCE: lexus 93 ls400 trying to find the amp

if you talk about radio amplifier, this located in trunk, upper side left on back rear seat its an allum. box

Posted on Apr 22, 2009

  • 73 Answers

SOURCE: Lexus ls400 cuts out

I have the exact same car that had the exact same problem. I looked high and low for months trying to figure out the problem. I changed the fuel pump, coil packs, spark plug wires, plugs, throtle position sensor and nothing fixed it. It would crank fine, but when it warmed up it would spit and sputter like it was running out of gas. It would shut off and would not crank back until it cooled off. The computers in those cars have something wrong with them causing it to starve the car for fuel. I sent my computer to Auto Computer Exchange in Davie Fl. They repogramed the computer with a one year warenty for $305. I put it in the car and It is fixed. One other thing that might happen with this car is the insturment cluster will go out. These cars are known for that. If this happens just go on Ebay and buy a rebuilt one for less than $100 it wil have a lifetime gurantee. good luck Ed

Posted on Oct 02, 2009

  • 73 Answers

SOURCE: Lexus sc400 electrical problem

the computer is bad and also these cars are known for the insturment clusters to go bad along with the computer. get them both fixed and it will solve your problem.

Posted on Oct 12, 2009

steve_e_uk
  • 1675 Answers

SOURCE: 1994 lexus ls400 no power pre cats red hot

it sounds like the problem is the cats, if they get to hot they possibly have collapsed inside and is blocking the system they sound like they need replacing

Posted on Feb 11, 2010

  • 395 Answers

SOURCE: my lexus ls400 cranks over but wont start also the car goes dead

this could be a starter or the enigtion swicth yes if you crank the key to long it will kill the battery.

Posted on May 05, 2010

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1 Answer

Are 91 and 93 Lexus ls400 climate controls interchangeable?


I believe that they are interchangeable up until 1997.

Nov 15, 2017 | Lexus Cars & Trucks

1 Answer

1997 Lexus LS400, I'm replacing a new ac condenser fan. Had a hard time getting old one out and it's worse getting new one in! Is there a special way to turn it or, what??? Help please.


I found one write up about this, they did it through the fender well by removing the liner, that is all I can locate on the subject.

Sep 08, 2016 | 1997 Lexus LS 400

1 Answer

What causes the cooling fan on 1997 Lexus LS400 to stay on high?


It's either connected direct or the fan speeds are not working exept on higth and to start with is try cleaning with higth pressure water the condenser and radiator hope that will help good luck

Jul 23, 2014 | 1997 Lexus LS 400

1 Answer

AC/Heater Blower Fan in 1990 LS400 works intermittently


Due to the age of your vehicle, the brushes in the fan motor are worn out. you will have to replace the fan motor, it is not serviceable.

May 30, 2017 | 2001 Lexus RX 300

1 Answer

Lexus 93 ls400 remote not working for driver's door


if all other doors work the door lock actuator needs replaced most likely. if door switch works the same. if not then it could be a bigger problem in the circuit or remote control module. use a meter to test for signal to lock actuator. if no signal then ck control unit. if signal replace lock actuator.

Aug 19, 2012 | 1993 Lexus Ls 400

1 Answer

The fans at front of lexus/92 LS 400 don't work


1992 ls400 engine light was on replaced thermostat now lights off......fans dont work anymore,last time it worked was about 3 weeks ago now having overheating probloms

Jun 10, 2012 | 1991 Lexus LS 400

1 Answer

My 93 Lexus LS400 wont make a sound at start


Since work was recently done to the vehicle I would look to see if any connections were left unplugged or inadvertantly knocked loose. Make sure to check the battery terminals and cables to ensure tightness and a solid connection.

Jan 14, 2012 | 1993 Lexus Ls 400

2 Answers

The AC in my 1992 Honda Accord works. However, it blows hot air when I'm stopped at a light for too long. "Honda diagnosed the problem; said something about some type of thermostat that sticks,...


This indicates that the booster fan for AC has failed. If you look in back of the radiator, you will see 2 electric fans. One is for the engine cooling, and the other is a booster for when the AC is running to provide for extra air flow through radiator and AC condenser. (May also apply when engine overheats, but not sure of that) As car is moving along, then air is pushed through allowing AC to work. When standing still, and fan failed, then no air (or less air) passing over condenser grill. (Condenser is the one in front of the radiator) No cool.
While standing still with engine running, open the hood and look at fans. Watch your fingers. Fans can start at any time. One may be running or not. Now turn on AC and look at fans. Both should come on together. If not, then it may be either the fan, or the fan relay or fuse. Or even the wire.
Does the engine get extra hot while standing still running? Let it sit there for ten mins or so and see if main fan kicks on. Watch your temp gauge, you dont want it to boil over. When the temp reaches the level it is at normally, one fan should kick on. If temp keeps climbing and no fan, then that may be the same issue, likely the main relay.

Jun 01, 2011 | 1992 Honda Accord

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