derek b 8/2/2010
2001 Jeep Cherokee Sport 6 Cyl 4.0L
what causes the oil pressure to drop while you are driving?
oil pressure is fine when i first start it up
First thing to do is replace the sending unit for oil pressure and see if any change. If no change it means that you really have low oil pressure. Oil thins out as the engine reaches full temp and the pressure does decrease, but it should not be turning on a warning lamp.