Can someone here please please please post a link for a thread that shows all the check engine light codes for a 91. I think thats OBD1. Ive done the search and cant find sn index for all the codes.

 

nevermind I just found them. Im getting a code 13 which is "No change in MAP from start to run" what the heck does that mean???

 

Theres something wrong with you MAP sensor, check the connections and clean out the vacuum line that goes to it. Clear your codes after this, if it comes back its time for a new MAP sensor.

This is useful for OBDI codes (like your jeep)
http://jeephorizons.com/phpbb/viewtopic.php?t=2719

and I use this for OBDII codes (96 and newer)
http://www.equus.com/support/obd2_definitions.php

 

Thanks for the help. I just cleaned the MAP and the vacume line to it and its still poping the code. I just replaced that piece of junk sensor a little over a year ago with a brand new unit from NAPA!

 

and whats weird is that it pops the number 13 code two times in a row. Does that mean anything special???