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April 6th, 2016, 11:34 AM
#1
Junior Member
2007 Tiffany LTC - Rear Heat won't shut off - all I get is heat, heat, and more heat.
Just had a new motor put in my 2007 LTC Tiffany 120 stretch. Now, all I get is heat in the back. Cycle the temp down and the blower slows but the heat doesn't let up.
I am thinking that the mechanic somehow put the Heat Diverter Valve back in place with switched connections? Of the four hoses going into the diverter valve, three are always hot and one is NEVER hot...seems like that shouldn't be the case...
The one hose that is not hot is at the end of the valve with the "arrow" - seems like he's got the return hose hooked where the engine hose should come into the system.
Any thoughts or suggestions would be appreciated!
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April 6th, 2016, 09:54 PM
#2
Senior Member
I would look under the hood first. Locate you vacuum line going to the heater line cutoff. It should be to the left center looking from the front of the car. Don't forget to remove you decorative plastic shield. You could have a vacuum leak, or the vacuum line became disconnected. This would give you Heat, Heat and More Heat.
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