I have a 95 xj and every time the engine step on the gas pedal, my oil gage goes with each rev just like as if its going with my rpm gage. Y is that and how can I fix it.

 

You are making it very difficult to understand what you are trying to say here. ??

 

Oops stupid predictive Txt. Well when I step on the gas pedal, the oil gauge on the dash spikes to the max line. But as soon as I release the gas pedal, it drops to the minimum line.

 

As long as it stays above the minimum you're ok. Should be something like 10psi for every 1000rpm. If you suspect it may be an intermittent issue, clean the connection on the pressure sensor (near your oil filter).

 

Try replacing the oil pressure sending unit, its right next to the oil filter. That fixed my oil pressure gauge.