I have a 97 Nissan XE with a similar problem. The clutch only slips when under the most strain, typically at freeway speeds in the higher rpms. If I push the clutch back in and ease off of it slowly increasing the RPM's it engages fine. It will also slip when I am not shifting when I hit the gas to get up a steep overpass. If I let off the gas and ease back down on it or downshift to a lower gear, it usually engages fine. Do I need a new clutch or are there other problems I should rule out before spending almost as much as the truck is worth for a clutch replacement? Thanks in advance for the help.
