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Resources for the Repair and Maintenance of your 1991 Mercedes-Benz 300SL

1991 Mercedes-Benz 300SL

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1991 Mercedes-Benz 300SL Problems

Miscellaneous -- Verified

As vehicles age, various problems may develop with the hard and soft tops. If problems are encountered, it would be recommended to have a technician familiar with these tops perform the diagnoses.

Electrical & Lights -- Verified

The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.

Engine -- Verified

Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.

Miscellaneous -- Verified

On high usage vehicles, the ignition lock may become difficult to turn due to wear of the ignition lock and tumblers. Replacement of the ignition lock cylinder will generally be required to correct this concern.

Engine -- Verified

Motor mounts commonly fail, causing engine vibrations to be transferred to the body. Failed motor mounts should be replaced in order to prevent damage to the transmission mount.

1991 Mercedes-Benz 300SL Questions and Answers

h20space, 1991 Mercedes-Benz 300SL, Palm Harbor, FL

please help me locate bolt pattern and waht has to be removed just to remove water pump

jbenz, 1991 Mercedes-Benz 300SL, Churchton, MD

My tranny is leaking.How do I change the transmission filter

Visitor, 1991 Mercedes-Benz 300SL, Greensboro, NC

There is a leak that has not been able to be replicated by spraying around seals. However after heavy rains, water accumulates. What are the possible issues? The car radio has shorted out the am...

Visitor, 1991 Mercedes-Benz 300SL, Chesterfield, MO

When I push the key fob to lock the car... I can hear the noise like it's trying to lock everything but it doesn't lock. Any thoughts?

Cdquest, 1991 Mercedes-Benz 300SL, Chesterfield, MO

Every once in awhile, when I am driving and turn on the blinkers, the dash acts like I just turned the key off and then right back on....The car runs fine during this...It's crazy... Any thoug...

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1991 Mercedes-Benz 300SL Reviews

air conditioner not cold blowing cool

my 1991 300 sl was experiencing symptoms of running fine when cold, and breaking up and stalling when engine got warm. changed crank sensor, no fix, still getting stuck on many occasions. car wold only start when it cooled off. thought it had to do with some kind of temperature sensor..changed fuel filter, and the problem went away. driven hundreds of miles trouble free now..car often sits for few weeks at a time, especially in winter. love this car..two tone black, silver body color..looks awesome, also has adaptive damping option, which I'm told is rare for a six cylinder..a keeper!!

My 1991 SL mercedes is a beautiful car. When it sits for a long period, once driven, it cuts off. The car will start after sitting a couple of hours. Restart car and drives fine.

Most reliable, affordable (used car) I have ever owned. And i have had many! Maintenance is cheaper than my mini van, if you go to the right place. I go to Collie Autoworks in San Rafael Ca. Darren and Denise are the ABSOLUTE BEST. I LOVE this CAR !!!

Great Car! Maintenance not cheap, but not bad for such an expensive car. fun fun fun

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