1991 560 sec has intermittent rough idle during all operating temperatures. After being driven with A/C on for about 8 miles in traffic and parked for under two hours in hot weather, car first refuses to start - A/C switched off. The car starts after a few attempts and has extremely rough idle. Start to drive and car soon stalls refusing to start. A few more attempts, car starts and goes to extremely rough idle condition. Car drives a short distance and dies. After many more restart attempts, car starts goes to extremely rough idle. Revving the engine to about 3000 RPM for about 30 seconds seems to bring back the normal rough idle with between 2-4 four revving attempts and resulting reduced coolant temperature. Car drives roughly and then suddenly smoothes out. Internet investigation points to biodegradable wiring harness. Seems to be a major safety problem. Luckily the 18 wheeler that was about to crush me during the last stall episode was able to change lanes just in time. This does not happen in winter time. For a car this expensive, this is outrageous. I never had such a safety and engine fire potential problem with my 1982 380sec. The wiring harness is an unconscionable expensive item that seems to have the same service life as a $30 serpentine belt, but costs over $1000. This is also a major emissions problem that could destroy the equally expensive control systems and catalytic converter. Does somebody die for you people to demand a recall. Or does the car have to become a super polluter? I could have died from this problem and my car is a super polluter when this intermittent hot problem occurs. I'm going to write my state and federal representatives and senators. Do the right thing and get this problem fixed with a recall. Biodegradable wiring! How stupid is that?
The worst 1991 Mercedes Benz 560 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Body1
- Electrical1
- Steering1
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Body1
- Electrical1
- Steering1
- Transmission1
Recalls
No recalls on record for this model year.
What 1991 Mercedes Benz 560 owners say
Most recent owner complaints, unedited.
Vehicle front end pulls to the left while driving.*mr the paint on the top window needs to be corrected. Molding around the brake light located in the back window to be placed correctly in its groove. The clear bra on the right front over the headlight is coming apart.
Consumer stated the differential bracket fell from the body of the car onto the axle.*yh
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Questions about the 1991 Mercedes Benz 560
Is the 1991 Mercedes Benz 560 reliable?
Owners have filed 3 complaints about the 1991 Mercedes Benz 560, close to a typical 560 model year.
What is the most common problem with the 1991 Mercedes Benz 560?
Body and structure, with 1 complaint. Next is electrical (1).
How many recalls does the 1991 Mercedes Benz 560 have?
No recalls on record.
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