hey-
i got a 1999 Jeep Cherokee sport, had the check engine light go on yesterday, i unplugged the battery for an hour, plugged it back in, the light hasn't gone back on since, but i have noticed it has been starting funky, and it has a weird idle. I have a feeling it may be a vacuum leak, how would i check for this? or could it be anything else?
Thanks!
-Eric

 

There's several ways to check for vacuum leaks. Plug in a vacuum gauge and check the reading... visually inspect the lines and fittings while listening for noise....spray a blast of carb cleaner along each line and fitting, manifolds, etc and see if the idle changes..