92 2.6 Runs rough once it warms up!! Help!!!
1992 190E 2.6L Starts and runs fine until operating temp is reached. It then idles rough and stumbles as you try to drive it. It never comes out of this no matter how hard you drive it. The car does not get driven very much and sits alot. The problem started without warning. Any ideas on what to look at???? Thank you in advance for you reply.