A faulty oil pressure sending unit, worn bearings, worn oil pump, idle to low,
go to Pepboys Auto have them pull the code to see what is the code for?
The oil pressure is low or the sensor has failed.
The most common reason for the oil pressure light to come on when your vehicle is idling, is low oil. Check your engine oil and make sure the oil is up to the full mark on the dipstick.
I sat in my car in the driveway with the car idling, waiting for the kids to come out.
check oil pressure with a gauge possible bad pump or engine is tired
Poor seal or it may be a breather if has a vacume line.
AnswerI suggest you read an article by Larry Carley as it is very informative.See related links belowGood Luck and Remember.Change Your Mind, Not Your Oil.
The idle for the 97 Taurus could be too low. The transmission bands could be sticking some as well, not allowing the transmission to come out of gear during idling.
That light simply comes on to let you know that you are operating the vehicle economically. You are not accelerating too hard or idling too much to hurt the fuel economy.
It is idling to low, it may be in need of a tune up.
If it was O2 sensor or computer related the check engine light would come on. Start with replacing the fuel and air filters.
there is a T.S.B 08-36-99 I believe....just going from memory it involves a vent wire installed in the connector at the o.p.s.