High idle - On the front of the engine, to the right of the warm-up regulator, there is a round cylinder with two wires coming out of it. Push on the wires when the engage is idling high. If it slows down, the wires are just loose. Pull them off and squeeze lightly.
If this doesn’t work, then the cylinder needs to be replaced.
I just bought a used 1985 500 SEL for 200 dollars.
It also leaks water into the engine. The person I purchased it from had done a complete top end rebuild. Does anyone know what is involved in repairing a bad rebuild?
I know the heads are cheap enough, but how about if there is a crack in the intake manifold?
Anyone have some experience, I would really appreciate it.
I recently purchased 1985 Mercedes Benz, clean in and out with 113,000 miles, runs like a dream. It only has a clonking noise when I engaged in gear forward or reverse. Also it needs a fuel injector. When idling or at a stop light, it shakes a little.
I purchased it at a dealer, out the door tax and LC, registered for $1,400,00..
I truly enjoy driving it. Once going it runs perfect, especially on the highways. I'm looking forward to fixing the small issues it has... it's by far the best car I've ever driven. Only wished I had purchased one long ago.
I have the same problem. Have you found out what the noise was all about! I love the car, and that reason will keep me from ever selling it! So please help me with the problem.
If you have purchased a 1984 or 1985, the Nada classic book puts them at 14,400 in excellent condition, average retain is 10,600 with 117,500 miles on it.
In reference to the owner who had vibration problems, it's definitely your guide and bushing. Have the tires checked first, and balanced and rotated to see if this stops your problem.
I'm a collector, and I have had almost every car you can imagine. You guys are right, it's hard to beat that old Mercedes ride! You know you have a quality machine with you when you drive it. These cars are heavy, especially the gray Mercedes that were built overseas like mine when I was in the military, but all I can say this car has been the best used car I have ever owned. I have had my 500 SEL for over 20 years.
I have the same problem. It feels like I'm out of control on the highway; the steering is way soft and really wanders. I don't know if it's the tie rods, didn't know about the "steering box".
We own a 85 500 SEL. Found out that the idle control has a fuse that went bad, it's in a larger fuse panel under the hood of your car. My car was idled so high that the car would move on its own at 20mph. I hope this helps, I'm a lady restoring my baby. Good luck.
Yes it is.
You need a rebuild. I have just done my one for $2700.
Replace the vacuum line from the modulator is my first guess.
Ben from Ohio.
Hi, I own an '85 500 SEL, and I love it! The car works in tip top shape, and I love how the rear seats recline back and forth.
The only issue I have with the car is the blower, either AC or Heat, only blows air from the top, and not directly at me. Thank you for help.
Chris from NJ.
Cannot raise the bonnet on this 500SEL 1984 Benz. The bonnet pull raises only one side, and I cannot get the other side to release. The car has had an electrical failure, and is currently on the side of the road. Can anyone help here??? I have managed to accidentally break the passenger side headlamp glass in an attempt to lever it up to access the catch. I am trying to help a mate out here, and have ended up in the s**t.
Run as fast as you can.
I still own the car, 81000 miles. The rear defogger worked after I replaced the fuse located on the fender on the driver's side. Just replaced the belts and auxiliary fan switch, and repaired one of the vacuum lines. My paint is starting to fade though.
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