Oil pressure loss question

[Ian]

I have a 1999 Jeep Grand Cherokee with a V8. when the engine gets warm and I come to a stop the Oil pressure gage goes all the way down to 0, but as long as I am moving it stays at about 40-50 PSI. any ideas? Any help would be appreciated.

 

[warpedredneck]

I have a 1999 Jeep Grand Cherokee with a V8. when the engine gets warm and I come to a stop the Oil pressure gage goes all the way down to 0, but as long as I am moving it stays at about 40-50 PSI. any ideas? Any help would be appreciated.

get the oilpressure tested with a mechanical gauge.
its most likely a faulty sender but you can only rule it out with proper testing