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AC compressor is on, light on the control is on, but hot
AC compressor is on, light on the control is on, but hot air … read more
Jake
Jake
6,009 satisfied customers
1981 for 50 Mercedes coupe. I turn on the AC but it keeps on
1981 for 50 Mercedes coupe. I turn on the AC but it keeps on going back to the heater. Friends car which most likely is a problem?… read more
Matt
Matt
Engineer
Bachelor's Degree
771 satisfied customers
Previous owner hit a curb or bank and damaged the left front
Previous owner hit a curb or bank and damaged the left front suspension and bent to lower radiator brackets back. This resulted in an AC hose pressing against the AC pulley and wearing a hole in it. I… read more
Eric
Eric
Retired
N/A
43,339 satisfied customers
I had a leak in my condenser. replaced with a new 1. started
i had a leak in my condenser. replaced with a new 1. started the car and refilled ac charge. the red rest light on the ac wont go off … read more
Lou Palomino
Lou Palomino
associates in automotive technology
10,285 satisfied customers
I don't have even cool air, just hot. I took to my trusted
Hi, I don't have even cool air, just hot. I took to my trusted local mechanic. he evacuated system, then was recharging and system would only take a little over a pound of refrigerant. he said this is… read more
Matt
Matt
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1985 MB 380SL air conditioning. Compressor turns by hand,
1985 MB 380SL air conditioning. Compressor turns by hand, have pressure on low side of about 25-28 psi. Followed compressor clutch wire and see that it is not connected to anything. Has two wires with… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
I have a 2003 mercedes, i changed the compressor, can't get
i have a 2003 mercedes, i changed the compressor, can't get the compressor to come on after adding freon… read more
Lou Palomino
Lou Palomino
associates in automotive technology
10,285 satisfied customers
, Marty. The compressor on one of my 1987 420 SEL's is
Hi, Marty. The compressor on one of my 1987 420 SEL's is kicking in and out, in and out. When it comes on, it is cool. It has plenty of freon in it. I switched out the switch panel with one of my othe… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Marty, Thanks for your help with the alternator. Website
Marty, Thanks for your help with the alternator. Website prompted if I had another question so I consolidated the AC issue. See all below. I have a 1995 c220 (W202), R134a system (VIN#WDBHA22E2SF17527… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Mercedes-Benz 560sl: I have a 1987 560sl. The A/C is fully
I have a 1987 560sl. The A/C is fully charged (checked with manifold gages). The compressor clutch takes a long time to engage. When it does engage, it gets nice and cold. I always attributed the dela… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
ac..blowing at 110 degrees, my low side is at 32..outside temp is 90
Well I evacuated the AC and let it sit for 4 hours to make sure it held the pressure then I charged the system. It is still blowing at 110 degrees, my low side is at 32 and the high side is at 175, th… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
1997 s320: ac..quit working..(clutch not getting power..going bad
Hi Eurotec; my ac in my 1997 s320 has quit working, the comperssor does not turn (clutch not getting power?) there is sufficient pressure at the check valve. i read something about a switch that is no… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
12vdc to the ac compressor and see and hear the clutch engage..vacuum
Coming back to my AC problem. I was able to run 12Vdc to the AC compressor and see and hear the clutch engage. So I drew a vacuum briefly, then hooked up the R134a refrigerant to the line and let it s… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
83 300SD: AC...sporadically..the AC would switch on..hot air
'83 300SD with lots of heat but will NOT switch over to AC. It did this sporadically in the fall but eventually the AC would switch on. Currently, I can only get tons of hot air. Where do I begin? Is … read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Malfunctioning..pressure sensor..the climate control panel..compressor
You have a malfunctioning refrigerant pressure sensor. There are two such pressure sensors -- one connected to the climate control panel and a backup inside the compressor. You can override the primar… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
Times nothing comes on.Now its summer the ac does not work
both ac and heater sometimes come on and sometimes nothing. I have to switch the ignition more than once and on again to get to work. At times nothing comes on. Now its summer the ac does not work. th… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
83 300sd: ac compressor, dryer..expansion valve..valve replaced
I have an 83 300sd. Recently had the ac compressor, dryer, expansion valve replaced (old compressor died). Converted to 134. When charged the system low side produces high pressure readings and the hi… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
ac compressor..ac works fine for a few minutes..compressor shuts off
I recently changed the AC compressor and the condenser. The AC works fine for a few minutes and then the current in the compressor shuts off. If I apply direct current it works. Could it be the AC ref… read more
Marty
Marty
Mercedes Technician
Associate Degree
30,558 satisfied customers
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Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

Mercedes Technician

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Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

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Mercedes-Benz Master Certified technician

Matt

Matt

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Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

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Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

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Work and diagnose electronics on daily basis.

Tim Mohr

Tim Mohr

ASE MASTER TECH

283 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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