I have an '87 Nissan van. I have noticed that when I'm cruising and back off the gas, that the engine RPM immediately slows down by a few hundred RPM. I'm wondering if this is normal, or a sign of impending transmission problem. I thought most automatics were designed to lock the torque converter when not accelerating, and did not expect the variation. FWIW, 180,000 miles on the van.
Bob