Question about 1990 Lexus LS 400

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I have a lexus 400 ls that needs the air conditioner recharged. we found the high one, but are unable to locate the low side. i was told the low side is the side we need to hook the recharge thing to. can you help me locate the low side?

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The low side its located between autopilot actuator and windshield, passenger side firewall

Posted on Aug 06, 2010


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1 Answer

Where is the low pressure port located?

if your are looking for the air conditioner Freon low side port i can only assume that your trying to recharge your ac yourself. DO NOT DO IT!! i work on cars professionally. the only way to properly charge your ac is to evacuate first under vacuum to eliminate all moisture from the system. if you have any moisture in the system and you run it it will cost you thousands of dollars instead of the hundred it would cost to have a professional do it. if the Freon cans worked well mechanics would use them instead of buying thousands of dollars worth of machines to do it.

May 26, 2012 | 1992 Lexus Ls 400

1 Answer

How do i recharge the air conditioner on my 1990 lexus 400

This is best handled by a shop which specializes in AC repair. I doubt you have the proper equipment to flush, lubricate and recharge the system. It isn't as easy as it once was when you screwed a can of refrigerant to the nipple on the low pressure side of the circuit.

Jun 28, 2010 | 1990 Lexus LS 400

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Need to locate fuel filter on 93 ls 400 lexus

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Feb 28, 2010 | 1993 Lexus Ls 400

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the reset switch is usally located either in the trunk on one of the side panels or on the passenger side under the dash on the kick panel

Aug 28, 2009 | 1996 Lexus LS 400

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Jun 29, 2009 | 1990 Lexus LS 400

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My 1990 lexus ls 400 seems to have lost its air suspesion.

you need to find the source of the hissing sound. thats why it will not raise. you have a big leak.

Jun 12, 2009 | 1990 Lexus LS 400

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Week air flow

I had the same problem, found out it was the filter which is located in the glove box, open the glove box and the back panel should lift up and out and u will see the white plastic guard for the filter, take it off and pull out the filter and replace it.

May 27, 2009 | 1995 Lexus LS 400

5 Answers


I'm not a Lexus pro but having done car stereo installs, common places are under the seats front or rear, or in the trunk well somewhere. May also be in the dash behind the deck.

Jun 10, 2008 | 1991 Lexus LS 400

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