E30 325ix heater control/climatecontrol problem

[Oysrell]

Hello! I am from Norway. I have a 1990 325ix touring, and I have problems with my climate control.

I have changed som sensors, the watervalve ! And I changed the heater controll today (part Number 64 11 1*386*822). I have also checked a motor that control a Arm (that changes between hot and cold air)

 

What happens is that if I turn the heater controll to hot, and rev the engine over 2000 rpm I can hear a knocking sound from the water valve.

 

But if I am under 2000 rpm its working. But I can only choose max hot or cold.

 

I really need help to figure out this problem!

[André Berger]

Hi, if it´s nocking from the heatingvalve, the waterhoses are reversed. Change the both positions of the hoses in the engine room and the nocking will be eliminatet.

 

Best Regards

[André Berger]

And now? Does it work?

[Oysrell]

And now? Does it work?

 

DANKE !

 

Sorry for the late answer !

 

I have been scratching my head on the heater, and no one has told me about the hoses !

 

I guess the past owner must have changed them. Then when I changed the valve I just did the same !

 

But works like a charm now !

 

The temperature on the temperature dial is still on low. But I am going to change the sensor tomorrow.