The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
On a 2002 Mercury Mountaineer : The " check gage " light comes on if the engine coolant temperature is too high , the engine oil pressure is too low , or the gas gauge is at or near empty
check the brake light switch
acura cl 2002 check engine light
On a 2002 Ford Expedition : The " check engine " light is the " SERVICE ENGINE SOON " light just to the left of the fuel gauge
what does a insufficient coolant temperature for closed loop fuel control mean and what can i do to fixs it on a mercury mountaineer 1997 engine is a 5.0
It is right under the dashboard under the steering wheel.
If the check engine light it on a 2002 Hyundai Accent on one of the sensors is malfunctioning. The computer is acknowledging this and alerting the driver that there is a problem in the engine.
I had the same problem on my 2002 Ford Explorer, after I replaced the gas cap the light turned off
had to replace the battery in my 2002 Mercury Mountaineer but now the theft light is blinking, it is cranking up. How can I stop it?
If the check engine light is flashing that means an engine cylinder misfire has been detected
For a 2002 Mercury Mountaineer : engine oil filter ( Motorcraft FL-820-S ) for the 4.0 liter V6 engine and the 4.6 liter V8 engine
If the check engine light is flashing that means an engine cylinder misfire has been detected