The CEL on the '97 Expedition indicates a combustion problem, for instance a fouled spark plug or faulty o2 sensor. To find out exactly what problem it's indicating, you'll need to go to a mechanic with the proper computer to read it.
On a 2002 Ford Expedition : The " check engine " light is the " SERVICE ENGINE SOON " light just to the left of the fuel gauge
The check engine light is an immediate signal to pull into a garage and get a quick diagnostic check. It could be a variety of problems with the engine. Usually there is a separate oil light or a wrench icon on newer vehicles to indicate an oil change is required.
Auto Zone will check your engine light for free... Write down the codes and go from there.
Auto Zone will check your engine codes for FREE. Then go from there.
Check engine light is out
yes it could cause big problems in your car. Id try and get it it fixed as soon as possible if i was you.
That is a sign that oil has escaped the crankcase and is now mixed with the antifreeze, you should check your engine for a blown head gasket.
A flashing check engine light is usually an indication of a misfire
Auto Zone will check your engine light for FREE. They will also tell you whats wrong.
According to the 2006 Ford Expedition Owner Guide : The " CHECK GAGE " light comes on if the engine coolant temperature is HIGH or the engine oil pressure is LOW
I would check the plug wires and the exhaust system.
check the throttle positioning sencer. (TPS) for short.