Fluctuating oil pressure
Hi folks. First post on this site. I want to make sure I'm taking the right steps to determine what's going on with my '92 V-6 truck. My oil pressure flutuates, according to my guage. On startup, pressure reads normal both at idle and running at higher RPM. After a variable period of time, the guage reading starts slowly dropping. It will eventually go all the way down to nothing and then decide after some random period of time to come back up. I've ordered a new sender just to rule that out.
The reason this worries me is I just had to replace a head due to a siezed cam - the front journal was totally ruined. It looks like it quit oiling. The cam on the other side shows no damage at all though, so it looks like the oiling problem was localized. Just concerns me that I might have problem with the oil pump even though my mechanic says he really doesn't think so.
Last piece of info is that it sounds like one of my idler bearings is getting ready to go. When cold, makes a loud wine. I don't see how, I want to know if a problem with an idler bearing could cause an oiling problem.
Thanks for any information.
-john
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