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Heater stuck on

Heater is stuck on and A/C will not work.

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1991 dodge dakota heater vacuum air flow shutters son't move

Taking your heating box apart may be a really big job.
It would be good to check the vacuum supply at the heater box, and/or at the controls.
Lack of sufficient vacuum can cause the heater to not work.
The low vacuum could be due to a vacuum leak somewhere before it gets to the controls or the heater box.
Then, the heater box or flaps could be stuck or warped, causing malfunction.
It is all repairable, but can cost you a lot of time and effort fixing this.
God bless your efforts.

Dec 22, 2015 | 1991 Dodge Dakota

1 Answer

Heater fan working no heat being delivered into the cockpit through the air vents

Heater control unit at fault could just be stuck check on heater matrix pipes in engine bay for unit work heater control from inside to see if there is any movement on unit can try moving by hand to see how badly it has stuck

Sep 16, 2013 | 2007 Renault Megane 1.5

1 Answer

My 89 olds calais is putting out barely any heat,it may be stuck on fresh air?

If both heater hoses are getting hot, and the radiator is full of coolant, you could have a blend door problem. There may also be a heater control valve on one of the heater hoses that is not working. The blend doors direct air thru the heater core and vents. That would follow your theory of the control being stuck in one position.

Jan 08, 2013 | Cars & Trucks

1 Answer

2003 Z4 Heater stuck on full heat.

take the heater apart and then you might be able to fix it that way if that doesnt work then take it to the shop

Jan 09, 2012 | 2003 BMW Z4

1 Answer

No heat when stopped for traffic

1-your thermostate is stuck open half way. thermostate is a simple device that made of enlarging metals when heat is applied. it suposed to be in close position to allow engine heat up, when specified temp reached it opens and let it flow and radiator tries to keep coolant cool.when it is broken it stucks or it acts slow or it wont acts at all. in your situation it is stuck open half way. it allows enough water to be heated but flow is limited to heat cabin heater.

2-if there are cabin heater selenoid/selenoids for two different temperature for cabin left and right, on some instance those selenoid valves to adjust cabin heater stuck open or closed like thermostate acts on first case. so heat is not enough to heat up cabin heater.

Nov 18, 2011 | 2005 Chrysler Sebring Conv

2 Answers

The heat in our 1998 continetal doesn't work. We replaced our thermostat. Still on heat. The a/c works fine. The vehicle run fine without any sign of over heating. We can't undrestand why the car's heating...

Two possible reasons, one is that your heat control valve that directs hot coolant to the heater core may be stuck or blocked. Two, you may have an airlock in the heater core that prevents water getting in to the heater core. You need to let the air out by loosening the upper most hose that feeds the heater core.

Dec 15, 2010 | 1998 Lincoln Continental

2 Answers

When i have the heater/defroster on the heater below blows cold air while the defrost blows hot. when i switch to just defrost the bottom heater stays on and blows cold air. when i have front dash and...

It sounds like you have a blend air door stuck. This is in the housing of the heater a/c blower unit under the passenger side of the dash. There is a motor on the top of the housing that could possibly be stuck or on working.

May 10, 2009 | 2003 Dodge Durango

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thermostat is stuck open not letting the car get to operating temp or the valve to the heater hose is stuck close and the heater core could be plug with rubbish from outside elements some times if you bought a use car people take the heater hoses off and plug them because they are famous to leaking make sure the hoses are conected

Oct 19, 2008 | 1998 Ford Expedition

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