Computer has detected a problem with the emissions controls. Fix ASAP. Generally this is an emission problem, it could be something as simple as your fuel cap is not on or it could be much more costly such as an O2 sensor. If the light is just "on" the problem is not critical, but you can not pass emission testing. If the light is "flashing" you should head straight for the dealer for repair. One quick fix - this has worked for me twice - is to disconnect the battery for a few minutes, this will re-set your computer and might turn the light off. answer take it to a auto parts store (auto zone ) they will put a computer on it and it will read a code and tell u the problem is. they should not charge u for it You may also check the wires leading to the rear O2 sensor. They pass over the drive shaft held in place by a clip. The clip hasbeen known to come loose and allow the wires to drop onto the drive shaft. They will then wear and cause the check engine light to come on.
There are several reasons why a check engine light could be on a 1995 Jeep Cherokee Sport. A few reasons are a loose gas cap, spark plugs, or low oil.
There are pages and pages of codes, have it checked by a scanner and then diagnosed from there.
check your local library the should carry chilrens automotive books.
The check engine light on a 2005 Jeep Grand Cherokee looks like this... Here is a link Check Engine Light It looks like a little yellow engine.
When my jeep cherokee alternator went bad, the check engine light came on and I didnt have a clue what was going on until my volt guage was reading in the red zone. When I replaced my alternator, the light went off. So in my opinion i wouldnt consider the check engine light as a alternator light.
There are pages and pages of things that can turn on the check engine light. You will need to have it checked for codes.
A flashing check engine light normally means you have a misfire.
With a scan tool.
If the check engine light has illuminated have the vehicle scanned for codes. The codes may lead you to the culprit.
Check engine codes, check for spark, check for compression, check fuel pressure, etc.
Perhaps you have a leak in your transmission. Check the transmission fluid while the car is running. DO NOT check any other fluids while the engine is running.
Have a shop check the AC system pressure
If the check engine light is flashing that means an engine cylinder misfire has been detected
That is the check engine light.
Check the oxygen sensor. My 1995 Grand Cherokee stopped stalling while driving after it was replaced.
check pcv it maybe plugged
Check for a label in the door jambs or glove box door or check the owner's manual
Disconnect the negative battery cable for about two minutes and that should reset your check engine light.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
There are pages and pages of things that can cause a check engine light. Have the code checked with a scanner.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions.
A gasket could be the cause of a Jeep Cherokee engine to whistle when it's cold. Check the throttle body gasket to see if it needs to be replaced.
The check engine light comes on when the engine computer has detected a malfunction and set a trouble code.
It could be an emissions problem or a catalytic converter problem.
With a scan too or with a battery disconnect.