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380 SL I have a 1982 Mercedes 380 sl that runs very good
380 SL I have a 1982 Mercedes 380 sl that runs very good sometimes and I could park it run into the store start and it will run like garbage. When it's running bad it's very sluggish and almost like i… read more
Pete
Pete
Mechanic
Construction, Plant Fitter
136 satisfied customers
Cold idle is too slow ... engine idles rough and frequently
Cold idle is too slow ... engine idles rough and frequently stalls ... how can I speed it up? … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I just got a 1987 Mercedes 190e 2.6. Its stalls when
Hello, I just got a 1987 Mercedes 190e 2.6. Its stalls when cold and always hesitates at about 3000 rpm's on hard acceleration. Back off the pedal and it evens out. A mechanic stated it was a catalyti… read more
Pete
Pete
Mercedes Mechanic
General auto certifications
34,219 satisfied customers
380SL: mercedes 380 sl starts but is very rough at idle then
mercedes 380 sl starts but is very rough at idle then it dies and usually wont restart for a while. if i can keep it running once it warms up it runs great.… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
380SL: I have a 1983 mercedes 380 SL. the customer states that
I have a 1983 mercedes 380 SL. the customer states that it was runing fine, and then it would idle, but as soon as you hit the accelerator pedal, it would stall. someone put a screw in the top piece a… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes-Benz 380 sl: i have a 1985 380 sl, 96000 miles. starts
i have a 1985 380 sl, 96000 miles. starts right off, but runs rough til warmed up. takes 5-10 minutes then runs fine.has happened for the last 6 months now it seems to run rough even when warmed up bu… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Sl..sitting overnight..it starts easy and runs great..awhile
1984 380 sl...After sitting overnight or several days, it starts easy and runs great. After driving for awhile, if I stop the engine for about 5 minutes, it starts normal. But if I let it set for 30 m… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 380sl: rpm..engine warms up car coughs sputters and stalls
1984 380sl. Has a higher idle sped when engine is warm (1900rpm) cold (1400 rpm) when engine warms up car coughs sputters and stalls to the point of not being driveble. Is it a sticky air control valv… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1987 560sel: runs great..it runs rough..runs fine..starts fine
1987 560sel 100,314 miles.starts and runs great cold but after warmup and driving if it sits for about 30 minutes it does not want to start! you can grind it until it sputters to life then it runs rou… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 380sl: A/C compressor..arrow..alaways in garage...What..one owner
Good Day....I am looking at a 1984 380sl with less then 60,000 miles of it...It has just had the A/C compressor overhauled....Body is staright as an arrow never been hit...2 dine sized touch up spots … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 Mercedes: SL...problem im..now and then after driving, the rpm
I have a 1984 Mercedes 380 SL. The problem I'm having is that every now and then after driving, the RPM really increases. I had this problem today....parked or in drive mode. If I hit accelator to the… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1985 Mercedes Benz: rpm..idling..that controls the rpms is..faulty
My 1985 Mercedes Benz 380 SL has developed a problem with the rpm. It is idling very fast. I took it to a mechanic who said the computer that controls the rpms is faulty and needs to be replaced. Does… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 380 se has rough idle..idle acceleration..000 miles..cap..rotor
1984 380 se has rough idle. off idle acceleration is great. car only has 112,000 miles. just tuned up with plugs, wires, cap and rotor. have had the car for only two weeks. was very well maintained. p… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 500SEL: car ran great..control valve..control unit
My 1984 500SEL has developed a high idle (1500 rpm - sometimes higher). I replaced the ignition control module about 3 weeks ago and the car ran great for about a week and then developed the high idle… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
IDLES ROUGH..BLACK SMOKE..CAR WILL RUN FINE FOR A WHILE AND SAME THING
I HAVE A 1981 380 SL. SOMETIMES WHEN IT IDLES ROUGH I WILL EXELERATE AND THEN PUNCH IT AND BLACK SMOKE COMES FROM THE EXHAUST. CAR WILL RUN FINE FOR A WHILE AND SAME THING HAPPENS. IF I AM ON HIGHWAY … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes benz: SL..I had checked: vacum leak and ignition timing
Hi there, I have a mercedes benz 380 SL year 85. The idle seems to be high. So far I had checked: vacum leak and ignition timing. Things that I changed so far: idle control unit, idle speed adjuster a… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1984 Mercedes Benz: SL..high idle..Cold start is approx..car warms
Have a 1984 Mercedes Benz 380 SL that has a high idle. Cold start is approx. 1000 rpm and as car warms , it goes up to 1400-1600 rpm. Please advise how to correct. All linkage is free and not binding,… read more
doctor tim
doctor tim
High School or GED
62 satisfied customers
mercedes benz: wires,cap,rotor & ing.coil..gas pedal..it runs great
Hello, I have a question about my mercedes benz, it is a 380 sl 1981.I recentley changed the idle controll unit,plugs , wires,cap,rotor & ing.coil,when the engine is cold ,& stepping on the gas pedal,… read more
SaabTech
SaabTech
Associate Degree
135 satisfied customers
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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

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Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

Mercedes Technician

4,460 satisfied customers

20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

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Mercedes-Benz Master Certified technician

Matt

Matt

Engineer

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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.

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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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