Hey guys, I have a quick question. A good friend of mine has a 1998 s-10 with the 2.2. The truck as 80,000 miles on it. His second timing chan broke not to long ago. He had a guy replace it and now after the truck warms up the oil pressure drops to about 5. He replaced the oil pressure switch. There is no noise in the motor. If you raise the idle the oil pressure goes up a little bit. at start up there is 45 psi. Anybody have any ideas what could be going on.