Hi Steve, Im having electrical problems with my "92 164". I was hoping you could help me out with some advice. I parked the car about 2 months ago because it was over do for the timing belt to be replaced. A couple weeks ago I finally got around to replacing the T belt. When I started the car to bring it into the garage to do the work it was rough running and surging. I thought , Ok its time for a full tune up. So, I replaced the T belt, and distributor cap and rotor along with the spark plugs ,and spark plug wires. After finishing this work when I drove the car there was still surging going on, and I noticed that when engine would surge that the tachometer, and the volt gauge on the dash would drop with each surge.