You have a 1998 mustang the idle is erratic how do you fix this?

Answer 1

some times simple things kill us when these problems arise check all the easy stuff first. check for air leaks old vacuum hoses that are cracked, a tune up may be in order check and clean the idle air valve, run a compresson test you may have a burned valve, one that drove me crazy on a gmc van i once had was the gasket around the egr valve was bad allowing air to get in it caused the van to idle rough and shut off at stops it ran great once it came off idle though air leaks is bad to do this if they are small. its hard to say just start with these things.