check out the articles on this site at -Auto Tap -they have quite a few DIY articles on this subject.
i've had this prob it's n the tranny check a ford repair book
it is probably throwing off a sensor, like the mass airflow or map sensor and causing the check engine light to come on
It means your EGR sensor voltage is higher or lower then expected during self check.
The check engine light comes on to indicate a possible problem with one of the engine's emission control systems. Take it in for service, and have the vehicle scanned for any trouble codes to locate the problem - usually a sensor.
On a 1997 Ford Explorer : CHECK ENGINE is just to the left of the " C " on the engine coolant temperature gauge ( Helpfull )
no you have to change air sensor
The knock sensor has failed and you need to replace it with a new one in order for the check engine light to go out.
Chances are it is an oxygen sesor. An OBII code reader should tell you if it is the front or rear sensor. I replcaed the front O2 sensor on my Explorer last fall. Easy job too!!!
No ,the check engine light indicates a trouble code. Have the truck scanned, it is the fastest way to diagnose the problem.
After the Explorer is scanned for trouble codes to diagnose and then repair the malfunction , then the check engine light can be reset
The oxygen sensor is one of many things that could turn the check engine light on.The oxygen sensor is one of many things that could turn the check engine light on.
Assuming you mean the egr valve, I would make sure that you have the check engine codes cleared. In addition, are you sure that it was truly the egr valve, and not the DPFE sensor monitoring the valve?