Question about 2002 Mercedes-Benz S-Class

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Mercedez benz S430 2002

Air blows warm compressor is on and system is full of R134

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My right door side mirra doesn't close and the window won't close.

Posted on Nov 28, 2008

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My 1986 300e air conditioner works great, then cuts off. I start he car and it works great and ice cold. Then goes warm. Is it freon?


First your ac comp has a clutch. second r 12 and r134 are NOT compatible if you just "add a pound of r134" you will kill your entire ac system. The O rings, dryer and pressure switches are not interchangeable nether are the lubricants and you WILL burn up your ac comp. Just a word or caution. It is probably the ac speed sensor to detect slip.

Jul 21, 2012 | 1986 Mercedes-Benz 300

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I fully charged the air. It reads full. But the compressor kicks on and off every 10 seconds. And the air is warm. I used Artic Freeze Ultra Synthetic R-134A It came with a gauge assembly.


Overcharging your a/c will cause it to blow hot .The on and of issue may be caused by the High pressure cycling switch . overcharging may be the culprit as well. you need to find out how much r134-a your system takes .

Jul 26, 2011 | 1997 GMC Jimmy

1 Answer

How to switch on the air conditioner in the 1996 mercedez benz C180


In your A/C control you have two rotary switches, if you set it at blue side it mean you select it for a/c if you select it for white or read it will blow hot and switch off a/c compressor this the basic, in your car have climate control a/c system it will select need to switch on a/c compressor or not by your settings and temp sensors reading , is this information helped you?

Oct 20, 2010 | 1996 Mercedes-Benz C-Class

3 Answers

Air condition warm air. put in coolant freon but still warm air. water pump replaced. still the same.


If it has climate control, the blended air door module behind the glovebox maybe the problem. It is stuck on the hot side.

May 01, 2010 | 1999 Chevrolet Blazer

2 Answers

Ac not cold replaced compressor


first the a/c system need to be put into a vacuum before you add r134. how much r134 does you system need? too much or too little will both get you warm air. does the compressor come on? air in the system will get you warm air too.

good luck

Jun 25, 2009 | 1990 Chevrolet Suburban

1 Answer

AC does not work


Check the fuse for the A/C and try refilling the A/C with R134. You can buy the re charge kit at Auto Zone or Wal Mart, almost any Auto parts store. If the system is low on R134 the A/C compressor will not activate to keep it from burning out.
Try checking the fuse first then re charge the system with a can 12oz of R134. Just keep in mind not to over charge the system. Just follow the instruction and you'll be fine.
Keep me posted, be glad to help out.

May 31, 2009 | 2004 Chevrolet Silverado 2500HD

2 Answers

Air conditioning system blows warm air


Ok I've been around too long...R134 (freon replacement product)

May 23, 2009 | 1996 Honda Civic

1 Answer

Ac blows hot


If your compressor is working the low side should be 15-38 psi. If you have 100 psi that means the compressor is not doing what it should. Make sure the outer clutch is engaged with the pully. If not A/C system check should be done.

Apr 26, 2009 | 1999 Suzuki Grand Vitara

1 Answer

Compressor comes on but no cool air has freion and vents blow


Your vehicle has the R-134 system. These systems usually don't have a charge site glass window. Just because the compressor turns doesn't mean the system is full. You need to hook up the hi and lo side of the system to evaluate the systems operation. Too much R134 will adversely affect the performance of the system producing warm air. You could have a bad expansion valve contributing to the systems malfunction. You can find the problem by hooking system to a set of manifold gages.

Mar 12, 2009 | 2004 Ford F150

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