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My 83 380sl is idling at 1500 RPMs. I'm looking for a guide
my 83 380sl is idling at 1500 RPMs. I'm looking for a guide to repair the issue, I'm pretty sure its either the idle control valve or the idle control unit. MY alldatadiy account doesn't have instruct… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
Engine starts idling high just few minutes after starting.
engine starts idling high just few minutes after starting … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
The engine only starts when it is cold and then runs at
The engine only starts when it is cold and then runs at 1500+ rpms. Once it warms up starts dying like lack of fuel. I can keep it going by spraying carb cleaner. When it dies, after about an hour whe… read more
eric remington
eric remington
FORMER SHOP OWNER/TECHNICIAN/INSPECTOR
associates degree
1,610 satisfied customers
Ki Marty, in February you helped me with a fuse issue in my
Ki Marty, in February you helped me with a fuse issue in my Mercedes. The fuse that controls idle by the passenger side floor panel in the red fuse slot. Well went well until the other night I went to… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
I have been dealing with Marty previously. I would like my
I have been dealing with Marty previously. I would like my question to go to him again. My question is; I have an 85 Mercedes 380sl that idles at 1000rpm when warmed up or cold. The car starts and run… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
1983 Mercedes 380SL. I replaced the following items: Fuel
1983 Mercedes 380SL. I replaced the following items: Fuel distributor, fuel pump, fuel filter, spark plugs & wires, warm up regulator, injectors. Car runs great, fuel pressure is between 40 & 50, but … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
Mercedes: Question about r129 1995 500sl 4 speed automatic
Question about r129 1995 500sl 4 speed automatic transmission marty You have been spot on with all your answers..so I just want to acknoweldge your exceptional knowledge you correctly predicted that c… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
380sl: Hey Marty, I have a 1985 Mercedes 380SL. The idle
Hey Marty, I have a 1985 Mercedes 380SL. The idle speed runs 500 rpm for some period of time (days, a week, no rhyme or reason). Then it goes to 750 rpm for some period of time. Then back to 500. 500 … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
300cd: mb..speed of 60 mph..pedal to the floor offers no acceleration
I own a 1983 MB 300CDT and recently I am experiencing a loss of power going uphill and at the 30,000 rpm range. At a speed of 60 mph, dropping the pedal to the floor offers no acceleration and the eng… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
76 satisfied customers
How can I clean out or repair a idle control valve for a mercedes 380 SL. I am loo
How can I clean out or repair a idle control valve for a mercedes 380 SL. I am looking to purchase a 1988 380sl with 180K I am told the " it has two muffler sections that are almost new,OEM parts, no … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
1983 380SL: accelerate..rotor..it idles at 850 rpm..dashboard area
1983 380SL Background: 12/17 MPG gas mileage All Idle controls and valves were replaced except the cold start valve, but it starts fine in cold very well, but it doesn't accelerate until it warms up p… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
C220: low at idle It needs about 100rpm more how can I adjust it
I have a C220 W202 and the idle is just little to low at idle It needs about 100rpm more how can I adjust it?… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
Mercedes 380SL: fuel System..Engine surges above 1500 rpm,plate moves
Mercedes 380SL,CIS fuel System. Engine surges above 1500 rpm,plate moves up and down.idle speed is about 1500 rpm… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
1983 Mercedes 380SL: replaced plugs..filters..drops..note getting gas
Hello, thanks for your time. I just bought a 1983 Mercedes 380SL with 37,000 original miles. The car fires right up, we have replaced plugs, wires, filters etc. in PARK, car idles at 1500 RPM but drop… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
380sl: benz..the motor warms up the idle speed increases..cool
i have a 1984 benz 380sl. when the motor warms up the idle speed increases over 10m ,when it is cool it idles just over 5. do you kow what is wrong… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
1983 mercedes: sl..that wont come off of a high idle speed
I have a 1983 mercedes sl that won't come off of a high idle speed. What should i look for?… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,139 satisfied customers
1983 Mercedes: idles..hours I may have to ride the brakes..dealership
I have a 1983 Mercedes 380 SL that has an erratic idle. It usually idles very fast so at say 30 miles per hours I may have to ride the brakes a little. The mechanic at the dealership try to adjust it … read more
joesshop
joesshop
Vocational, Technical or Trade Scho
204 satisfied customers
380SL Mercedes - out of no where, once the engine ...
380SL Mercedes - out of no where, once the engine warms up the RPM''s shoot up from normal idle @ 500 RPM to first 1000 RPM then 1500 RPM and settling at between 1500 and 2000. What can I do to get it… read more
RIP
RIP
Lead Technician
Vocational, Technical or Trade School
469 satisfied customers
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Meet the Experts:

MB Paul

MB Paul

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3,567 satisfied customers

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

Marty

Marty

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Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

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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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Hipo64

Hipo64

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Work and diagnose electronics on daily basis.

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Tim Mohr

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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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