Hey guys, my 03 tranny is giving me trouble. It has 89,000 miles. When I am cruising at a constant speed the rpms jump up 300 and then come back down. This does not happen under exceleration until today. I could not tell if the raise in rpms was due to slippage or down shifting. I was accelerating to 30 mph. Also the normal shift point is 2000 rpm . Today it would also go to 3000 rpm, hang there for a fews seconds and then shift. In older cars part of this was a vaccuum problem.

Any help appreciated
Chad