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190d: my 1989 190d has a rough idle when cold and when cold
my 1989 190d has a rough idle when cold and when cold it will not turn off with the key. once warm it seems that everything is normal… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
500sel: 1984 mercedes 500sel, intermittent problem, running
1984 mercedes 500sel, intermittent problem, running rich after the car has idled for a period of time, as an example stopped traffic for 10 min or so. Problem will not be there in the morning and will… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
380 sl: I have a 1985 380 SL. When I start it( for the first
I have a 1985 380 SL. When I start it( for the first time of the day), it runs rough and when I give it gas, it bogs out. If I let it warm up to operating temp, it runs like a champ. If I drive it for… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
300SDL: 1986 300SDL 140K original miles. Runs well, but engine/radiator
1986 300SDL 140K original miles. Runs well, but engine/radiator coolant requires top up every 300 miles. Does not leak when parked. What does this signify ?… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I have a 1998 e300 avantG 3L TD RHD. it can not produce cold
hi, i have a 1998 e300 avantG 3L TD RHD. it can not produce cold air from vents. it does manage a slightly warm.… read more
Michael Warfield
Michael Warfield
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Vocational, Technical or Trade Scho
3,132 satisfied customers
1987 560sl: last winter..few minutes..no moisture dripping..blowing
Stored 1987 560sl was started often to warm-up last winter. some white exhaust smoke was seen for a few minutes when cold (especially). Spring warm-up showed same white smoke from the exhaust with no … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1986 mercedes 500sec: problem starting it when its cold..adjuster
1986 mercedes 500 sec, having a problem starting it when its cold , I believe its the injector is there a was to adjust the injector ? the car has been sitting for 6 years ... I believe there is a inj… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1995 Mercedes Benz s420: car start cold..warmed..restart..wont start
1995 Mercedes Benz s420 the car start cold, after warmed up it idle rough and shut off. When trying to restart, the car cranks up and back fire but won't start. Will start up again once it cold. It id… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
76 satisfied customers
2002 Mercedes ML 320 I Started the car one morning and began
2002 Mercedes ML 320 –I Started the car one morning and began smelling burning rubber. The AC was working fine and blowing cold AC air. I parked for 4 hours and then later started the car; at that poi… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I have a 2004 cl500..the ac only blows cold..lo..blows warm air
i have a 2004 cl500..the ac only blows cold when in the lo position...otherwise blows warm air... i did replace the sensor contained in the rear view mirror and the air filters...… read more
BOBBYSS
BOBBYSS
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Associate Degree
14,730 satisfied customers
280ce: h reg..control wheels..the vents end up blowing just cold air
H reg '92 W124 230CE (no A/C); If I set the control wheels to the warmest setting (fully red) and switch the fan on full the air gradually gets colder and colder. If I blow it onto the screen it start… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
Mercedes: SEL..outside temp..degrees..the heat blows cold no matter
Hi, I own a Mercedes 420 SEL (W126) Whenever the outside temp is about 7 degrees celsius or below, the heat blows cold no matter how warm the engine gets. I had the "heat controller" replaced ($800!) … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
190E: MB..Automatic transmission..1986 without ABS, W210..idle speed
Hi I just got a MB: 190E 2.0l Automatic transmission from 1986 without ABS, W210-024. It is running in fault-mode and idle speed is high and alternating. I have changed all the sensors on the top of t… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
69 280sl: warmed..the intake to where it barely idles the fuel pump
my 69 280sl really gobbles up the gas it has not been in use for 5 or more yrs smells rich when its cold not so much when warmed up ihave tried turning mixtue on the intake to where it barely idles th… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
83 300d: The first.. starts real hard when cold and lopes at idle
HI, my wife just bought an 83 300d that she thought was in cherry condition, but there's two quirks and i can't quite figure exactly what, or how bad they are. The first.. starts real hard when cold a… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1978 450SL: erratic heating or AC...outside temp..) engine temperature
1978 450SL, erratic heating or AC. Sometimes it works or not. E.g. 1) 75 degree outside temp, but AC w/fan blows out (I swear) engine temperature air...roasting on a warm summers day drive! 2) on a co… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 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
1987 300SDL: runs great..Runs rough, shudders..first started..smoke
1987 300SDL, 230 k miles, runs great when warm, started at 3 degrees above zero last week. Runs rough, shudders when first started + BIG cloud of smoke. This lasts 10 - 20 seconds then it smooths out … read more
Will
Will
Shop Foreman
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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

57,141 satisfied customers

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.

Chris(aka-Moose)

Chris(aka-Moose)

Mercedes Technician

288 satisfied customers

24 years of experience diagnosing & repairing

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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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