check engine light?

[extremeYJ]

my check engine engine light just came on for the first time the other night when i pulled out my brothers truck. how can i get it turned off and what is wrong with it? can anyone help me?

 

[jhiggins]

extremeYJ, what year model engine size ...Give us some more info to work with here

 

[Bounty__Hunter]

Disconnect the battery for 15 minutes, it will reset your computer. It may not come back on, being a condition you experience only when towing.

To find out what the trouble code is, you can turn the key from off to run 3 times, leaving it on and counting the flashes of the check engine light. There will be a slight pause between each digit in a 2-digit set, and a longer pause between each 2 digit set. Last check code will be 55, that means all codes are finished.

 

[jhiggins]

Bounty__Hunter, On a YJ you can check the codes???

 

[XJNick]

It will ultimately depend on what model year you have. The later the model year, the more advanced the computer system :wink:

Also, any OBD-II vehicle (which may include '95 YJs) you cannot clear the computer by unhooking the battery. You'd need a scanner. :mrgreen:

-Nick :!:

 

[jhiggins]

Hmmmmmmmmm That is good to know so you are saying the older Jeeps Ie. 90-up as older or 89-down as older????

 

[XJNick]

Older meaning, say '91 - down. '92 and up had some slightly better computers, and by '95 or '96 all vehicles have the industry standard OBD-II systems :mrgreen:

-Nick :!:

 

[extremeYJ]

i have a 95 w/ the 2.5 and the light comes on about 5 minutes after i start driving.

 

[XJNick]

You most likely have an OBD-II compatible computer. Autozone can pull the codes for you or you can do it with any OBD-II scanner. You Cannot reset an OBD-II computer without a scanner. :mrgreen:

-Nick :!:

 

[jhiggins]

OK thanks for clearing that up for me...I was a little confused there ....