my oil pressure gauge went crazy
I was on my way to Austin today, when my oil pressure gauge went crazy. it was jumping like mad. I stopped, checked my oil (which was changed on monday). All ok. Started it up..same thing. Finally, after driving for over an hour, it's sitting at the bottom, barely moves when i give the truck any gas. Truck is driving and sounds fine. Nothing out of the ordinary. Could it be the sending unit? If so, where is it located, and how hard is it to replace? Thanks.