oil pressure gauge

[iroc89al3]

Hi all, with the nice weather on sunday went and got a new battery for the camaro cause im gettin itchy!!! started it up for the first time in a few weeks and seemed to have a problem with the oil gauge. The car is stock besides a borla exhaust. Its got 57k miles on it and i never modified anything so i its not from me doing modifications or hacking wires. When idleing its at 60, when i rev the motor the gauge shoots up above 60 almost to the little oil symbol. Basicly its like the pin or the indicator whatever you call it was removed and advanced higher, but like i stated the cluster has never been worked on. Is there some sort of sensor or something i caould replace? thanks al

[Pampered-Z]

I think the sensor is on the back of the engine near/behind the distibutor on the driver's side and attached to a 45 drgree elbow. Will have one wire going to it.