1997 Ford Contour 6 cyl Front Wheel Drive Automatic 82000 miles
My daughter's car has an engine warning light on. We took it to an Auto Zone store to put on their diagnostic check and a code registered which was P0420 with the following explanation
OEM Brand: Domestic
Catalyst efficiency low-bank 1
the oxygen sensors monitor the catalytic convertors ability to store oxygen
1. Catalytic converter defective (Failure possibly due to #2, 3 or 4)
2. Engine misfire or running condition
3. Large Vacuum leak
4. Engine oil leakage into echaust-valve guide seals, piston rings
Overall the car seems to run fine but occasionally when coming to a stop light or sign, the vehicle will idle rough or stall.
Occasionally there is a keening noise coming from the engine compartment, if I shift to neutral and blip the accelerator, the noise goes away.
I notice a heat smell when I open the hood to check for noise of any obvious leaks.
This is my daughters car that she drives at college. In 12 months, the car will be replaced when she graduates. I want to keep the car running without problems for the next year but don't want to spend thousands on repairs to make the warniong light go away.
Where do you start without replacing part after part to see if that fixes the problem?
Thursday, December 13th, 2007 AT 9:50 AM