I just boughty this 97 dodge stratus and at idle the oil pressure light comes on. I course I changed ther oil to see if that could of been the problem, Of course it was not... Can swomeone point me in tyhe right direction. What could it be? If it is a switch where on the engine is it? ALOHA

 

How many miles are on the engine? It really could be low oil pressure at idle which is when the pressure is at it's lowest

 

The oilsending unitcould be bad or dirty as well.