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Where on the 1989 driftwood rv would the cable that runs the temp control from cool-warm on the dash connect to? It's connected to the switch on the dash but is not connected to anything on the other end!!

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If you line it out under the dash, it may have some natural bends or angles to kind of help you along. It will go to a hinged door inside the heater case, either just in front of or just behind where the heater core is positioned in the case. To get an idea exactly where the heater core is, look under the hood where the heater hoses go into the firewall. The hoses connect directly to the heater core.
There should be at least one other cable from the controls? Look at how it is connected, and how the cable sheathing the movable wire inside is held rigid by some type of clamp or holding fixture very near where the wire eyelet can catch a door pin or lever. Your loose cable will attach the same way. Keep looking and you will find where it goes.

Posted on Nov 24, 2013


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The heat does not get warm when I turn the temperature all the way up and allow it to run for several minutes. The fan blower is working, the fuse is not blown, what could it be?

the way your interior heater works is by using water from the engine cooling system.
Behind the dashboard is a small version of the engine radiator and its plumbed into the cooling system and to control the water flow is a valve thats connected to the dial on the dash.
It seems the connection between that valve and the dash control is your issue

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I have 1989 s10 blazer with a 4.3. I have replaced the water pump,thermostat & belt,it still gets hot by the dash gauge it says the temp is 225 is that normal temp?

The normal temp should be between 195 and 220 degrees. 225 is not bad but does seem a little on the high side. Do you see this temp at idel and then it cools down as you drive or do you see this temp all the time? If you see it all the time after the engine is fully warmed up it may be the gauge is a little off or the trump sensor may be a little off. If you see it at idle and then it cools down while driving than you possible have a bad fan clutch. Another possibility is that you have bunch of debris that has built up in front of the radiator on the outside. Let me know if you have any questions and I'll do my best to answer them. Thank you for using!

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Hello: Check the temperature door. Make sure it is in the heat position. The temp door should be on the passenger side under the dash, remove the cover and with key on move the temp control from heat to cool. If the temp control is manual there will be a cable that is connected to the arm that moves the door. If the system is automatic there will be a electric actuator that moves the door.

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I can, maybe you can't. That switch or slider controls a door on the heater box which lets cool air into the box to mix with the warm air being blown into the interior. If the switch or the cable connector, or the door is broken or disconnected there will be no temp control. You need to get someone up into the dash and check out the control and/or the box.

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