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Can you show me heater control valve and heater control doors

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Posted on Nov 20, 2014

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Cant find the plug for the control actuator on a Ford E150. Door is not switching so only cold air is blowing.


What year E150 ? Manual or automatic HVAC ? What door isn't switching ? Mode door , temp. door ? Some ford's have a valve under the hood hooked to heater hoses called hot water valve , allow hot coolant to go through the heater core . Ford Explorer 1992 heater control valve install Explorer E150 doesn't matter ford used on all there vehicles ! Some are vacuum controlled others are controlled by a cable !

Sep 29, 2016 | Ford Cars & Trucks

1 Answer

I replaced the heat blend actuator because I was not getting any heat. Now, after replacing, all I get is hot air and no cold. The A/C was working fine just before replacing.


Do you have Manual Climate Control System or Dual Automatic Temperature Control System ?
The temperature control switch:
  • is a potentiometer that outputs a variable voltage to the temperature blend door actuator to set the position of the temperature blend door.
  • initiates closing of the heater control valve. When set to full COOL, a lever on the temperature blend door pivot shaft depresses the pintle of the heater control valve vacuum switch. The heater control valve vacuum switch then applies vacuum to the heater control valve, closing off engine coolant flow to the heater core.
  • is serviced only with the climate control assembly.
You may have disturbed something when changing the actuator , the vacuum switch o vacuum hose .

Oct 21, 2015 | 2005 Ford Explorer XLT

1 Answer

Heater valve location


It's a vacuum line to control the valve? It will connect there at valve and run into and under the dash to the back of the heater control panel. All the vacuum control hoses for the heat and AC are in a pod that connects to the back of the heater controls. A vacuum line from the engine is also there, the pod will send the vacuum signal out to various doors on the heater/AC case, as the controls demand. One also goes to the heater control valve.

Sep 09, 2013 | Cadillac Catera Cars & Trucks

2 Answers

Heater control valve 97 GMC Sierra


Temperature is controlled by an air mix door inside the HVAC compartment. This door is either electrically actuated if you have an electronic climate control system, or a cable for manual control. Most probable cause is a failed electric actuator (air mix door control module).

Apr 17, 2017 | 1997 GMC Sierra

1 Answer

Where is the heater control valve located on my 2002 ford escape v6?


I don't show a heater control valve for your truck. It should have a blend door under the dash that controls air flow thru the heater core.

Dec 08, 2012 | 2002 Ford Escape

1 Answer

My heater doesn't seem to want to get hot. I have done a radiator flush with new antifreeze, changed the thermostat and it's still blowing out hot air.


If it's not blowing out hot air, the blend door may be the problem on the 1990 Isuzu Trooper.

Heater Water Control Valve REMOVAL & INSTALLATION On early models the heater control valve was part of the heater core inlet. To replace the control valve, remove the heater core as outlined in this section. Remove the control valve from the heater core, being careful not to damage the core. Use new gaskets when installing new valves. The remainder of the vehicles are not equipped with heater water control valves. They use heater unit doors to regulate the amount of heat entering the vehicle. --- I would check that both tubes running to the heater core are getting hot. If they are, then there is a blend door problem. If both tubes are not getting hot, the heater core is blocked somewhere or the heater control valve, if so equipped, is in need of replacement. Good luck on this repair. prev.gif next.gif

Oct 28, 2010 | 1990 Isuzu Trooper

1 Answer

2005 chevy truck a/c works cant get heat blows cold


This sounds like a valve problem, or a heater/ cool air door stuck.
Many GM vehicles, have under the hood, a valve, it is electronic or vacuum controlled. When you switch the lever to heat, this valve opens, thus letting hot water flow through to the heater core.
On some newer models, there is a door (flap so to speak) within the interior compartment. This flap opens and closes between heater core and interior, thus controlling hot air flow.
Have you check to insure there is sufficient coolant in the system?
Low coolant levels will also cause no heat, but will also show signs of engine running warmer, sometimes much warmer than it should.
The valve under hood was as used on my 1995 Astro van. the mechanism looked to work as you could see shaft move in and out, problem was the diaphram or flap in valve on end of shaft (inside valve and not visible) was detached.
The other method, interior door or flab within heater box assembly was a problem on my 1998 Ford Expedition.
Yours, being GM, I would check for this valve under hood. It will be somewhat obvious in most cases as it will have heater tubes running into it and from it into firewall.

Oct 12, 2009 | Chevrolet C2500 Cars & Trucks

2 Answers

No heat blows air ac works


2 possibilities. 1 - the heater system isnt getting adequate hot water flow from the engine and not heating the air for your heater to function. This can be due to a defective heater control water valve, a plugged heater core, a disconnected or plugged heater hose.
2 - the system is in fact getting heat, but your heat is bypassed/lost due to dashboard vent and blend door errors breakage common with that era of jeep. have the valve/cor/heater hose flow checked. If that doesnt show issues, have the vent control system checked for blend door or dash door breakage. beware, its alot of labor to change the dash solenoids when they brake, ALOT of labopr (6 hours or more!) so if you are committed to fixing it because a solenoid and/or sensor broke in there, I highly recommend you chaneg ALL solenoids wuith new rather than risk another breaking in a month and the 6 hours of labor must be repeated.

Oct 03, 2009 | 2001 Jeep Grand Cherokee

2 Answers

1996 crown victoria has no heat


the temp blend door may not be rotating from the a/c evaporator to the heater core opening.

Could be the motor on the blend door or the temp control knob.

Do you have manual a/c or electronic temp control?

If it's the a/c door electronic actuator motor, it's on top of the plenum. Have to remove the instrument panel for access.

Hope it's the temp knob on the control head.

top one is the circuit you are looking at
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Apr 23, 2009 | 1996 Ford Crown Victoria

2 Answers

Heater valve


there is no heater control valve in this truck, heat control is done through what are called blend doors. So the issue may be the front blend door motor has failed, this is very common on all Ford heatimng systems except the Focus.

Dec 15, 2008 | 2000 Ford Expedition

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