Heater Control Vale

[jdq]

Is there a heater control valve in any of the hoses going to heater core,if so can you tell me where it is and about it.
1990 Bonn sse,climate control digital Thanx

[jdq]

anyone

[randman1]

There is no valve of any sort that controls the flow of coolant either in or out of the heater core.

[jdq]

Originally Posted by randman1

There is no valve of any sort that controls the flow of coolant either in or out of the heater core.

thanx for the reply,just trying to eliminate everything

[jdq]

Originally Posted by jdq

thanx for the reply,just trying to eliminate everything

Hey Randman today changing heater core i must have hit some wires above actuator arm above core cover molding, silver box with couple of clusters going into it.One cluster ,the connector is white with blue tabs could this have the DIC and compass wires cause sometimes my display would cut out and in,few days ago I got it to stay but now I must have bumped it and display is gone.
thanx

[randman1]

Yep sounds like it.



The DIC module is the shiney silver box above the actuator arm. I have problems with my compass and DIC too. During my engine swap, I decided to take advantage of having the dash removed and pull the module to clean all of the pins both on the connector and the module. I used both rubbing alclhol and an improvised sandpaper scraper but it did not help one bit. My displays only make cameo appearances every once in a while. I believe the problem is in the cluster.

[jdq]

Im going to give a shot at cleaning it.
Also is that little 9hole grill looking thing on dash in front of passenger the cab temp seneor.Also in dash defrost vent that doesnt clip in right after time there is a sensor attached at far right side ,What is this.
Appreciate all replies and thanx.I wish I found this sight earlier.
JDQ

[jdq]

Originally Posted by jdq

Im going to give a shot at cleaning it.
Also is that little 9hole grill looking thing on dash in front of passenger the cab temp seneor.Also in dash defrost vent that doesnt clip in right after time there is a sensor attached at far right side ,What is this.
Appreciate all replies and thanx.I wish I found this sight earlier.
JDQ

The grill looking thing has air thru accordian black plastic hose that is not connected is this important,im assuming it is cooling.