My daughter told me that the oil light on her 1992 Corolla with 94K miles on it is coming on. It comes on after the engine is warm (6-7 miles) and only comes on when she pulls up to a stop.
I drove it to work today and the symptoms are:
Oil Light comes on only after engine is warm does not come on after starting cold
RPMs drop down below approximately 900rpm
I can rev the engine in neutral back above 1000rpm and the light goes back out
Oil & filter changes 3 weeks ago. Oil level is perfect.
Engine leaks but I keep the oil level where it should be
Any ideas if I have a pressure unit going out or does it sound like the oil pump is on it's way out?