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Lou my A/C sometime blows cold air (not really cold) ... and
Lou my A/C sometime blows cold air (not really cold) ... and most of the time warm air... 2 weeks ago auto shop refilled my A/C with refrigerant and the your some DYE in that .... Could this be a Duov… read more
Lou Palomino
Lou Palomino
associates in automotive technology
9,998 satisfied customers
I'm having issues with my 1989 Mercedes 420 SEL heater. Do
I'm having issues with my 1989 Mercedes 420 SEL heater. Do you have someone that is knowledgable?… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
My c280 1998 AC is blowing cold on left side and hot on
my c280 1998 AC is blowing cold on left side and hot on right side at same rime center is not blowing at all… read more
Billy
Billy
Bachelor's degree
3,458 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
57,140 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
57,140 satisfied customers
S w221: Hi.I have a s320 w221 which for the past few days
Hi. I have a s320 w221 which for the past few days refuses to blow hot air from heater blower at startup.after 5 minutes or so and the water temp hits about 40 it kicks into life . It's been very cold… read more
Hipo64
Hipo64
Mercedes Technician
High School or GED
444 satisfied customers
SEL (W126): I own 1989 SEL (w126) when the engine is
I own 1989 420 SEL (w126) when the engine is idling I get a good hot air blowing from the vents. The moment I start driving and the RPM is over 2000 I lost all my hot air and get only cold air blowing… read more
Michael Warfield
Michael Warfield
Factory Mercedes-Benz Technician
Vocational, Technical or Trade Scho
3,132 satisfied customers
Kompressor: slow down..smoke were coming from the trunk..cool..drove
I was drving Mercedes Kompressor at about 80 with no problems yesterday when it suddenly started to slow down and wouldn't go over 25 (engine temp was 97) . looking down the muffler in was orange hot … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
2000 mercedes Benz: blowing..warm/hot air..fan or blower become..vents
2000 Mercedez Benz s 430 Heater is not blowing any warm/hot air. It appears the climate control is functioning properly. I can hear the fan or blower become louder but no noticeable change in the flow… read more
DBAutomotive
DBAutomotive
Owner/Operator
Associate Degree
125 satisfied customers
Mercedes E320: Compressor engages- fan blows-plenty..leaks..vacume
Mercedes E320 A/C------- Compressor engages- fan blows-plenty of r134-pressure good- no leaks-control moduale working- vacume door opens- BUT THE LINE STAY HOT (low pressure side) Solinoid,Switch!!?? … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1986 mercedes: sel..blow cold..fact, it blows hot sometimes
I have a 1986 mercedes 560 sel, and sometimes the a/c wont blow cold at all. In fact, it blows hot sometimes. It does what it wants and I can't change it or duplicate it when I want to. Could you make… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1987 400sel: 000 miles..degrees..air conditioner..cool air to hot air
I have a 1987 402SEL with only 80,000 miles on it. Just took a road trip a couple weeks ago with outside temperatures around 100 degrees. The air conditioner worked fine EXCEPT it would occassionally … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Blows..vacuum acutuator to switch from defrost to vent is
I have a 420 sel, changed over to 134, new comp., new drier, blows pretty cold but not as cold as it should, seem to get colder driving, and cool at idle, also vacuum acutuator to switch from defrost … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
97 C230: work OK..outside temp..the car interior..climate control
My wife owns a 97 C230. This summer the A/C seems to work OK until afternoon when the outside temp approaches 80 degrees or so then the car interior starts getting uncomfortably warm. Had a mechanic c… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,453 satisfied customers
excellent: 1986 420 sel..air intake..engine running..smell..000 miles
Hi my name is XXXXX XXXXX have a 1986 420 sel that I just purchased and am having a problem with the fuel and air intake when I had the engine running at 2200 rpms it did not blow any blue smoke now t… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
The heater blow hot air when idling in park..faster..SE
Why does the heater blow hot air when idling in park, but turns to cold once you get going to about 30 mph and faster? 1985 380 SE… read more
Rob
Rob
Diagnostic Technician
High School or GED
196 satisfied customers
I have a 1988 Mercedes Benz 420 SEL. A couple of years ago ...
I have a 1988 Mercedes Benz 420 SEL. A couple of years ago I changed the original air conditioning system to the complying R134. The system use to cool enough for city driving (stop and go with traffi… read more
RMillerPhD
RMillerPhD
V.P. of Academic Affairs
Doctoral Degree
230 satisfied customers
1989 Mercedes: heater..blowing cold air..defroster..a relay or vaccum
I have a 1989 Mercedes 420 sel and when using the heater the floor vents keep you warm but the air coming out of the vents at the window is blowing cold air. If you put the defroster on the air will w… read more
MBGuru
MBGuru
Bachelor's Degree
282 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

57,140 satisfied customers

Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

3,132 satisfied customers

Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

771 satisfied customers

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

promerc

promerc

mercedes diagnostic technician

553 satisfied customers

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

Hipo64

Hipo64

Mercedes Technician

444 satisfied customers

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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