I have a 95 Caravan with a 3.3 engine. The oil pressure drops to zero and it dings, then comes back to normal, over and over. Replaced the sender, still have the problem. It occurs when driving and have a mid range reading.

Where can I get a schematic of the oil pressure gauge circuit?

Any other suggestions?

Thanks
Rick

 

Check the wiring from the sending unit. Could be grounding somewhere.