Hi all,

Have a 1985 190D 2.2 that blows hot air through the defrost (windshield) and driver and passenger side vents regardless of the climate control settings (even in off). It gets warmer as the engine warms. Replaced the heater control valve as suggested by many but didn't change anything. Any suggestions?

Thanks much!

1985 190D 2.2
1985 300D Turbo

 

You might want to replace the actual climate control unit. Any year 190e/d will work and they're about $8 from the junk yard.