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Related Mercedes Questions
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
29,460 satisfied customers
1987 420 sel runs rough(?) seconds when warm then runs
1987 420 sel runs rough(rich?) for 20 seconds when warm then runs perfect for duration of trip.Runs perfect when cold.… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I was told that I need blower and control replaced in my 1987
I was told that I need blower and control replaced in my 1987 Mercedes 420 SEL. How do I install that?… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes-Benz 420 SEL: I have a 1987 mercedes 420 SEL that
I have a 1987 mercedes 420 SEL that runs well. Yesterday I was just starting the car after it sat for about four hours and it sort of coughed. After that, the starter turns and turns but the car just … read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes: brake warning light..SEL..after replacing the brake pads
How do I reset the brake warning light on a 1987 420 SEL Mercedes after replacing the brake pads?… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 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
1987 420 sel,was running very rough,changed fuel dist...injectors
1987 420 sel,was running very rough,changed fuel dist. and cleaned injectors,changed spark plugs,after all this it will start but only run for about 5 seconds. Any ideas? thank you Will… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1987 420 sel ac will not switch to panel..defrost..Relay?..fuses
1987 420 SEL ac will not switch to panel, remains on default defrost. Relay? or problem location. All fuses in underhood panel are OK.… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1987 mercedes Benz: the label in the lid of the fuse box..sel
I need a copy of the label in the lid of the fuse box of a 1987 Mercedez Benz 420 sel, the number and letters of the fuses.… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I am installing a starter in a 1987 Mercedes 420 SEL. There
I am installing a starter in a 1987 Mercedes 420 SEL. There was no starter in it when I got it. The wiring harness has (2) wires. (1) from the battery, it's obvious where it connects. There is only (1… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
I have a 1987 mercadies 420 sel car..abs light came..put gas..run good
i have a 1987 mercadies 420 sel car will not start when cold idle is high and abs light came on car will srart when i put gas in direct. also car will run good when worm… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
1987 Mercedes: sel..Driver seat is stuck..seat moves forward and back.
I have a 1987 Mercedes 420 sel. Driver seat is stuck in the reclined forward position. The seat moves forward and back. It will not recline. When you work the switch, you can hear a sound at the front… read more
marcpod
marcpod
Own collision repair service
Vocational, Technical or Trade Scho
1,707 satisfied customers
Mercedes: considering buying..86 Mercedes MBZ 420 Sel, 8 cyl
I am considering buying a used Mercedes. I would appreciate your advice on potential problems to investigate as I have the used car looked at by a mechanic. So far I am looking at: 86 Mercedes MBZ 420… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
what my clicking noise was on my mb 420 sel..timing chain..worn
I found out what my clicking noise was on my MB 420 sel, I thought it was the newly replaced timing chain. They told me the clicking was coming from a worn camshaft. Question is, what kind of job is r… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
mercedes benz: 1987 420 sel, it stalls..im driving..slow down
i have a mercedes benz 1987 420 sel, it stalls alot, it spudders when im driving if i slow down to turn the engine will stall what could this be… read more
Marty
Marty
Mercedes Technician
Associate Degree
29,460 satisfied customers
Mercedes-Benz: Outside temperature gauge plus heated wing mirrors
Mercedes-Benz 420 SEC 1987 - Outside temperature gauge plus heated wing mirrors not working. I would like to first check connections as I have had some work done recently. any idea where to look or an… read more
Steve
Steve
Vocational, Technical or Trade Scho
204 satisfied customers
Sel..the heater fan has gone out, fuse outside the fuse box has blown
Have a 1987 420 sel the heater fan has gone out, fuse outside the fuse box has blown, where is and how do I get the fan out?… read more
VinnievegaMBtech
VinnievegaMBtech
Systems Technician
Vocational, Technical or Trade Scho
130 satisfied customers
Mercedes: sel..4.2 , location of idle valve on the intake and what
1987 420 sel mercedes 4.2 , location of idle valve on the intake and what does it look like?… read more
VinnievegaMBtech
VinnievegaMBtech
Systems Technician
Vocational, Technical or Trade Scho
130 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

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Bosch Certified Master Tech. Over 35 years experience.

Lou P. master tech

Lou P. master tech

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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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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

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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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