It is hot here and air conditioning is a necessity.
The Merc system is fine and maintains comfort. But on the few highways where we can really run the car at speed the Klima relay goes kuput. Cruising at ~160-180kph is fine, but higher speeds (230-240kph) kill the relay after 2 or 3 minutes.
Luckily we have many 4cly 201/124's here. Many have been junked so used Klima relays are easy to find and cheap but I would like to determine: 1) if this is a common problem and 2) if there is a solution (other than turning off the air conditioner above 200kph).
Please comment.
Thanks & regards,
bobf.