The rack is also known to stick in those pumps thanx to low sulphur diesel fuel. A buddy of mine was about to replace the pump on his 98 because it was unresponsive to input from the peddle occasionally. Did all the sensor stuff still acted up. He got in touch with a company that remans these pumps locally and was told that about 75% of the pumps he remans really had nothing more than the rack stuck on them. His cure that seems to be working so far is a little outboard motor oil added to the fuel occasionally. Your results of course may vary.

Kevin