Recently purchased a 1994 E320 with 120,000 miles.

Had it checked out prior to purchasing and all seemed fine.

The air conditioner was blowing ice cold for the last few weeks. During a 400 mile trip, it continued to blow but lost the coldness. Over the last couple of days I have noticed that sometimes it work (blows cold or semi-cold) and other times it blows warm. The Check Engine Light is not on.

Any clues?

Thanks

Joe C.

1991 300E 87,000 miles
1994 E320 120,000 miles