Question about 1992 Lexus Ls 400

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AC & Stero not working 1992 Lexus LS 400

I'am not getting any power or at least the AC does not work I took the unit out and placed it in another car and every thing work fine but when I put it back in the original car nothing works not the AC or the radio and side mirrors onot working either but everything else works Fine I've check the fuses that I could find and all are fineany salutions

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  • Anonymous May 23, 2009

    i have exactly the same problem and have also changed the fuses only difference is the car is an is200

  • yadayada
    yadayada May 11, 2010

    what does the AC have to do with the radio system? Please elaborate, thank u.



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I put on a new ac compressor and clutch. When i start to charge the ac the clutch kicks in and then kicks out. Help what is the problem?

Posted on Jun 18, 2009

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Check your cig lighter for any coins or ring. that shorts it out n kills the fuse if u change the fuse ,

it will happen again but make sure you check n change fuse and get back everything should work fine

hardy es300

Posted on Jun 03, 2009

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Check the relays

Posted on May 13, 2009

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Can the ac valves be reapired in a 1992 lexus ls 400?. the compressor leaks refrigerant, can this leak be repaired?

you remove the compressor and exchange it for a rebuilt one, many companies rebuild them. then you install the rebuilt one and have a shop which does A/C work recharge the whole system.

Jun 09, 2011 | 1992 Lexus Ls 400

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How to insatll Replacement AC Compressor 1992

This job requires special tools and special training. If you lack either, you risk SERIOUS personal injury. Injury comes VERY EASILY!

You need to address oil levels, proper and legal refrigerant recovery, system evacuation, and recharge.

You were planning to also replace the receiver/dryer, correct? It also needs the oil in it measured and incorporated into the amount of oil (in %) that would need to be added. FAILURE to address these and other issues will guarantee premature system failure and likely compressor damage.

Take this job to a qualified shop.


Jul 26, 2010 | 1992 Lexus Ls 400

1 Answer

What is the firing order for a 1992 Lexus LS 400?

Here is a diagram that should help you out.


Jun 10, 2010 | 1992 Lexus Ls 400

1 Answer

My 1992 lexus ls 400 keeps stalling and idleis very low

Look for a small electric motor near the accelerator cable and near the top of the valve cover.

It's call IDLE AIR CONTROL (IAC) motor.

It's job is to increase the idle when load is added.
Example: turning on headlight,turning on AC.

Testing it is simple.

Warm up you car for 10 minutes.

Locate the IAC motor

turn on loads.....AC,headlights,etc

The motor should move the idle up

If the motor does not increase the RPM then it can be stick.

Try to give it few gentle taps to free up the gears.

It can be clean if your are up to it.

This electrical motor is very expensive. Please handle it with care.


The other trouble spot are

old accelerator cable

TPS Throttle position sensor


I will do a simple tune up and gas treatment before starting to replace any parts.

Please post reply on the comment window.

Oct 27, 2009 | 1992 Lexus Ls 400

2 Answers

1992 lexus ls400 lcd dash display not working/

On eBay there is a guy name Jay who repairs and exchanges your unit. He also gives you a guarantee.

Jun 12, 2009 | 1992 Lexus Ls 400

1 Answer

No RPM's and the Overdrive

The rpm gauge is a commen problem & it could be fixed. It has to be sent out to this company for repair. Just look on the web & you will find them..

Apr 18, 2009 | 1992 Lexus Ls 400

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