how can you tell if the check engine light works in 95 ram 2500 4x4 w/ 5.9? How to check if previous owner disconnected light? and what aproach to take if previous owner did disconnect it.
Having proplems w/ emission and keep asking owner why? if truck isnt throwing codes and turning on light.
any help would be great

 

when you turn your key to run the cluster should flash the check engine light in its light test and then it should disappear..