I need to pick some brains quickly. '88 300E started to idle rough, coughing, sputtering, then the radio went out on its own, the ABS and SRS lights came on and the car stalled and coasted to its present resting place along side of the road. I attempted to start the car and there is no power, however, I have overhead lights. The Tachometer gauge started to swing wildly while all of this was happening. The car will start off of a jump, however, it will only run for approximately 2-4 minutes before stalling out again. Could this be the OVP? I tried to do a search, but the search function requires a 4 letter term to do a search. Any help would be greatly appreciated. If it is thought to be the ovp, how difficult is that repair?

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Eric
'88 300E
'00 Expedition
'86 Alfa Romeo Spider
'84 Harley Davidson FLH"X"
Special Edition
'70 FJ40 Land Cruiser (basket case)