When I push in my clutch my oil pressure drops to almost nothing on 1997 Ford Ranger

With it sitting idle oil gauge jumps up and down

Asked by for the 1997 Ford Ranger
3 answers
could be a faulty guage, oil pressure sensor, low oil level or wiring issue..
Agree with above, check oil level first. Just remember... You have a gauge but the sender is actually a switch, just on and off. The gauge is either up or down on this vehicle it does not reflect actual pressure changes (why Ford did this I don't know). If the oil level is OK I would have the oil pressure tested by someone.