My daughter's 94 Jeep with the 4.0 liter engine is idling to low when it is in drive ( around 450-500 rpm) and it will die on her every once in a while and it shakes a little bit while sitting at a red light. I would like to adjust the idle speed up just a little bit but I cannot see where to adjust it at, can someone please tell me who to do this?
on the newer jeeps, a rough idle is a sign of something wrong. Look close at the vacume lines, do a tune up, and if that doesnt clear it up, have it hooked to a scanner.
the idle is controlled by the computer.