I have a 1998 Mazda B3000. It's the same as the Ford Ranger. 3.0 V6, 4x4, 5-speed. 140,000 miles and very clean. Runs great but there is an issue that is bugging me. Say I'm putting along running 2000 rpm. When I push in the clutch or shift into neutral, the rpm's don't drop. In fact they won't drop until the truck comes to a stop and then they drop very slowly. They won't drop to what I consider an idle range (700-800 rpm) until the truck sits for about 20-30 seconds. They will drop from 2k to 1500 and then slowly back off to 1k. After a bit they will drop to 700-800. RPM's then stabilize and it idles smoothly with no surging. The clutch seems to be fully disengaging, there is no tendency to move at all in neutral or with the clutch pushed in. Do I have a problem of some kind? Any ideas? Every standard tranny car or truck that I've ever had would immediatly drop rpm's when the clutch was pushed in or the gear selector was in neutral.
thanks,
NBH