Our 1995 Park Ave Ultra has developed an intermittent hesitation-surge. I noticed today at about 70 mph on the freeway. It feels like the transmission slipps a little, then catches. Not really bad, but noticible. Before I take it to the transmission shop, is there anything else that could cause this? There is no change in the RPM or speedometer that I can detect. And it does not happen all the time. Seems to start after driving for perhaps 20 miles.
The car has 102000 miles, and the transmission was last serviced at about
50,000 so it's due for service anyway.TIA
Ed