Mercedes

Have Mercedes questions? Ask a mechanic for answers ASAP

Connect one-on-one with {0} who will answer your question

Related Mercedes Questions
Heater headache, 1984 300D. Fan blower always works.
Heater headache, 1984 300D. Fan blower always works. Intermittently just cold/cool air coming out.Sometimes gets worse, but the intermittency doesn't relate to the engine temp, RPM, idle, road velocit… read more
Lou Palomino
Lou Palomino
associates in automotive technology
10,020 satisfied customers
Heats blowing out of defroster and side vents,while cold is
hello, heats blowing out of defroster and side vents,while cold is comingfrom center vents, compressor working ,replaced blower motor ,monovalve,vacuum tree under dash on 91 300e,ac still working inte… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Heater blows cold air. I have replaced the monovalve, sent
Heater blows cold air. I have replaced the monovalve, sent the AC/Heater control switch out for testing and it came back as good. When the car is idling, the air is hot, but cold when driving. I wonde… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 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
1987 Mercedes 300D Turbo. No heat, fans a/c nothing until
1987 Mercedes 300D Turbo. No heat, fans a/c nothing until the car fully warms up. Then I have to turn off and turn on car only after hot and everything works normal. I already replaced mono valve prob… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1990 350sdl the a/c heating system wil not produce heat it
1990 350sdl the a/c heating system wil not produce heat it will start to warm for about 5 minutes then turn cold i have repaired the mono valve,flushed the heat exchanger to make sure i have hot coola… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Marty, The heater on my 560SEL was blowing cold. I checked
Hello Marty, The heater on my 560SEL was blowing cold. I checked the monovalve and sure enough it was torn (see attached picture). I replaced it, but the heater still blows cold. Is there a correct po… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
I have an 87 560sl I replaced the mono valve and now at idle
I have an 87 560sl I replaced the mono valve and now at idle with monovalve unplugged I will have hot air but while driving the air cools off to barely warm. I know my temp wheel is not working right … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
1985 USA Mercedes 380SL Climate Control (Heat): Car runs
1985 USA Mercedes 380SL Climate Control (Heat): Car runs very well (thank you, Marty!). However, no heater operation. I have already removed the dash, replaced all vaccuum solenoids and lines, repaire… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
280SL: Have '83 280SL with heater that works fine at idle and
Have '83 280SL with heater that works fine at idle and slow speeds, goes cold on highway. Rebuilt monovalve - didn't help. Any ideas? It's cold here.… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
mercedes 560sl: 1987 mercedes 560sl, heat was intermittant,
1987 mercedes 560sl, heat was intermittant, only blowing warm on defrost. replaced monovalve. Now only blowing cold air. Found A/c compressor cycling even when dialed to heat. Now only blowing extreme… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
marty its steve,climate control questions. its about same thread
marty its steve,climate control questions. its about same thread we talked about. im not cheap, ill pay to talk again,but I need some help… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
300e: I have a 90 300e 2.6 having a similar issue to the one
I have a 90 300e 2.6 having a similar issue to the one described here on this post : http://www.justanswer.com/mercedes/86iu9-e300-2-6-91-300e-2-6-w124-hot-air-blows.html blows hot air at defrost vent… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
Mercedes Benz 300DT: I have a 1985 123 Body style, 300 DT Mercedes
I have a 1985 123 Body style, 300 DT Mercedes Sedan that I am experiencing Heater problems with . With engine running and car setting the heater seems to work ok . Climate Control is on Econ button in… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
eurotec rite on with torn heater mono valve...hot 12 v..grounded
eurotec rite on with torn heater mono valve. replaced it , but no heat yet ,no water circulation, both wires on mono valve are hot 12 v, what is cause and cure? should one be grounded ? which one? doe… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,140 satisfied customers
: the heater blows only slightly warm air..temperature sensor
I have an '87 560 SEL, but my problem seems to be generic with other models I have had: the heater blows only slightly warm air and often for only a short period of time. seems like a temperature sens… 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
1985 mercedes: sl..heater..thermostat..car is driven, the air coming
my 1985 mercedes 380 sl has a heater problem, in that it won''t blow warm air regardless of the settings. I replaced the thermostat but no change. If you start it up and let it idle, it WILL blow warm… read more
RIP
RIP
Lead Technician
Vocational, Technical or Trade School
469 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

< Previous | Next >

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

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x