1991 Mercedes Benz 560

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? *JB