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I have a 1987 mercedes 420 sel and i cannot control the
i have a 1987 mercedes 420 sel and i cannot control the heater blower, it comes on when it want to. so when i need the defrost it doesn't come on. need help… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I have a 90 420 sel with a 86 motor in it, i took it to a
i have a 90 420 sel with a 86 motor in it, i took it to a repair shop to get it diagnosed and they narrowed it down to the catalytic converter a put a new one on and now it's worse, i noticed this pro… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I have a 1990 Mercedes 420 sel gasoline that dies at low
I have a 1990 Mercedes 420 sel gasoline that dies at low speed and with in a minute or two after starting. It starting to it more often. the other day I try to start it and it would run only a second … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
420 Sel: 1991 420 sel mercedes cut off while drive will not
1991 420 sel mercedes cut off while drive will not start fuel pump will start but bypassing able to start car and get it park way at home. tried replacing the fuel relay but did start. What other poss… read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
c230 sport: 2006 c230 sport. 60, 000 miles. Car well maintained.
2006 c230 sport. 60, 000 miles. Car well maintained. A few weeks ago, my check engine light came on so I took it in to see what was up...the car had been running fine. Except for a slight vacuum leak … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
560SL: I have a 1987 560SL. The fuel pumps, filter, injectors
I have a 1987 560SL. The fuel pumps, filter, injectors have been replaced. The whole intake with fuel spider was replaced as vehicle has 68K on it and was sitting. I drove it home and it was running f… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
420sel: Hello your old friend Harlan here with another question/problem
Hello your old friend Harlan here with another question/problem with my 1991 420sel. yesterday, it was raining, the car was running fine. i stopped at a stop sign. The engine died and would not restar… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
420 sel: Hello. My 1989 Mercedes Benz 420 sel has idle problems.
Hello. My 1989 Mercedes Benz 420 sel has idle problems. When first started it revs between 650 and 750 rpm up and down. Then as it warms up to normal temp it jumps to 1100 rpm. Also runs like there is… read more
Matt
Matt
Engineer
Bachelor's Degree
807 satisfied customers
2000 Mercedes s430: drove my..i went to the gas station..about 5 mins
I drove my 2000 Mercedes s430 to the post office (didnt turn car off), then i went to the gas station. Turned car off and pumped the gas. When I tried to start the car, it attempted to start several t… read more
Hipo64
Hipo64
Mercedes Technician
High School or GED
444 satisfied customers
1976 mercedes: It starts fine, but when I depress the gas pedal
Not sure if my question made it thru. I have a 1976 Mercerdes 300D. It starts fine, but when I depress the gas pedal, it does not respond. I bought the car a couple of years ago - drove it home and it… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I drove about 500 yards or so in the grass parking lot..restart..crank
my 1987 420 sel started, I drove about 500 yards or so in the grass parking lot I was in, and then the car shut off. Upon trying to restart, the vehicle would crank but not start. Any suggestions on w… read more
Auto Psychic
Auto Psychic
owner
Bachelor's Degree
76 satisfied customers
Dies starts right up runs great other wise fuel press @ 51 psi taken
91 420 sel looses poser & dies starts right up runs great other wise fuel press @ 51 psi taken @ fuel pump… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1977 240dengine startsstarter..disconnect..reconnected
1977 240D engine starts starter keeps spinning turn off key and engine stops starter keeps spinning and gets real hot only way to stop the starter from spinning is to disconnect the battery when batte… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
fuel pump..fuel filter..coils and distributer has not been done.
what to say, the gas is full of fresh gas. fuel pump and fuel filter have been exchanged. coils and distributer has not been done. wires and sparkplugs have not been exchange.1987 mercedes benz / 420 … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
Mercedes Benz: SEL..car wont start..cranks..starts right
I have a Mercedes Benz 420 SEL and the car won't start. I got it from this lady who had too many cars. I cranks and some times it starts right on the numbers but lately I've am beginning to have my do… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
1987 Mercedes Benz: die..cuts..back down..about 30mph, it cranks
I have a 1987 Mercedes Benz 420 SEL and there are times that I can be driving and the engine will just die, and as I am coasting to a stop, it starts back up and does fine until it repeats itself. The… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
stop sign..dim..new battery, drove 3 days, switched off for 30 mins
Driving home at night, headlights lights on, stopped at a stop sign, car went dead waited a minute and then started fine, but 5 minutes later, almost home, ABS light came on, then a couple of other pa… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I own a 1989 Mercedes 420 SEL. A couple of months ago it suddenly
I own a 1989 Mercedes 420 SEL. A couple of months ago it suddenly died at the mall with no previous symptom. After a few minutes I cranked it on and it worked for 5 minutes and sudden death with no je… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 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

57,141 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

807 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.

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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