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420SEL

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Sunroof malfunctioning
It is possible that the cable or motor that moves the sunroof are broken or failing. There is also the possibility that there is some debris or object in the track for your sunroof. I would ask for help from...
Question
Car running sluggish then dies - 1988 Mercedes-Benz 420SEL
Hello. I would check the fuel filter first. If the filter is clogged then this will occur. If the fuel filter is fine then the air flow meter needs to be checked. This is the most common part to fail...
Question
Ignition key not working - 1987 Mercedes-Benz 420SEL
It's quite likely the battery is dead, and all electrical functions are inoperative. All of the locks have mechanical actuators. A certified technician from YourMechanic can replace your battery at your home or office and get you on your way....
Question
No fuel to pumps - 1991 Mercedes-Benz 420SEL
Since you know how to use the multimeter, you are 2 steps ahead already! Start with power to the fuses (fuel pump), then the fuel pump relay to follow the power path. It's also possible that the ignition switch, and...
Question
Car will only start after being jumped - 1991 Mercedes-Benz 420SEL
If this is a fuel issue, it's likely the check-valve in the fuel pressure regulator not holding pressure during shutdown. This valve keeps a low pressure in the fuel injection system for faster starts. If faulty, the fuel pump has...
Question
Car will not start/no fuel - 1989 Mercedes-Benz 420SEL
If you are certain it is the fuel (i.e. you have confirmed good spark at the plugs), start with power to the fuses (fuel pump), then the fuel pump relay to follow the power path to the fuel pump. It's...

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