SL/R129: Very strange ?
Thread Starter
Newbie
Joined: Aug 2019
Posts: 5
Likes: 6
From: Los Angeles
1990 Mercedes Benz 500SL
Very strange ?
Hey guys maybe yous can explain this lol yesterday was driving my 90 500sl locally and the AC was blowing completely hot air I tried all different settings long story short nothing worked it was HOT .. This morning I turned the car on and let it run the AC is blowing ice cold .. so I may seem stupid here but like I said in my first post this is my first r129 and first older model Benz ... so my question is this common and if it is what’s the fix?
Super Member
Joined: Jul 2010
Posts: 598
Likes: 19
From: Eastern Kansas
94 SL 600, 98 993, 89 XJS Conv., 85 Daimlier Princess 16 Hybrid Lincoln 16 Chevy crewcab
A single valve is the source of the paradox. The mono valve is the regulator of the balanced temp. I have replaced it when a similar process occurred.
