Could you tell me how to approach(from inside engine compartment or under dash in cabin or behind center console in cabin) the vacuum and/or electrical controls for the floor/dash vents and the blend motor for heat controls on a 95 Riv?
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Re: Blend motor location for heat control
I can tell you where to get the complete service and troubleshooting manuals for your exact car if that will help, the control will be on the side of the duct near your ac evaporater and heater core. Exact factory manuals are available online to everyone who wants to spend 20.00 to get them.
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its behind ur dashboard in front of ur center console .located on ur hvac box mounted behind the dashboard.usually u can get to it thru your glove box or under driver side of car in front of center console. depends which side isnt working. also u can move the blend air door controls ti help u try an locate which motor is buzzing or clicking and even trying to work to help with finding blend air door motor an which side is bad.. hope this helps
Either the controller, where you turn on the heat. Or the blend door motor is bad. Most chevy blend door motors are Under the dash in the center, behind the console. Hard to get to, but not impossible to replace.
The blower resistor is the most common thing to fail on these. Mounted under the dash on the passenger side, behind the blower. As far as no heat, It could be the heater core, the blend door motor, or the controller. My guess on that would be the blend door motor. It is located in the middle of the dash, just under the radio. If you have a center console, you may be able to get to it from the side.
There is blend door in vent channels under the dash of the vehicle. It blends warm and cool air in the vents depending on the temperature setting. The Blend Door is controlled by a motor called an actuator that gets its signals from the setting on the dash. When the actuator fails the blend door can't move. If it stops on hot you always get hot air.
1. Blend Door stuck.
2. Temperature control not sending signal to actuator.
3. Actuator motor gone bad.
Of the 3 possibilities the actuator motor is the most common and the easiest to fix. The part is $40-90. I don't know exactly where actuator is on the Pilot. My GMC you remove the plastic trim below the dash and its just to the left of the glove box near the 'hump'. Perhaps the part store can tell you or someone else will offer the exact location.
Once you remove the actuator you can plug it back in to the wire clip and move the temperature knob and see if it moves. When you get the new one plug it in and make sure it turns before bolting it in.
To clarify a bit. The heater is never technically turned off. The blend door determines how much it goes thru the vents.
If the system is running right, a quick check is to see if the cold side of the compressor lines are sweating/condensation. Then most likely the system is good. The A/C filter, called a dryer, isn't changed unless you have a catastrophic compressor failure, ie lots of metal in the lines. The cabin air filter has nothing to do with the A/C system. Assuming you have a good system and not getting cool air inside the cabin. The blend door motor is bad or it could be just unplugged. These are usually locate under the dash, in front of the console, on the drivers side. Some times on the passenger side. I do many makes and models of cars, So I can't tell you exactly where yours is. Hope this helps.
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
causes of no heat in the cabin are engine thermostats that are stuck
open (engine runs cold) or air bubbles in the cooling system.
Check coolant level, then start engine until it is warm and the thermostat opens. You will tell when it does when the needle on your temp gauge goes cold when it reaches around 180-200* and then goes back up. Now turn on your heater full blast and go to the engine compartment. You will see a heater valve located on the passenger side, next to the washer reservoir. It is a black thing with 4 heater hoses connected to it. Feel the hoses. When everything is working correctly it should be like this:
Hose going to waterpump will be hot
Hose going to (I think the thermostat housing) will be hot
2 Hoses going to heater core (mounted behind firewall) will be hot
1. If only 1 heater core hose is hot, heater core is clogged--
UNCLOG: remove 2 hoses going to heater core when engine is cool, hook water hose end to one of the sides and flush out gunk from heater core. Reconnect hose and you should be good.
2. If neither hose core hose is hot, heater control valve is bad or vacuum is bad--
Test Vacuum: remove vacuum line from heater control valve, you should feel the vacuum **** on it when pressed to your cheek and the heater control valve actuator should move when you unhook the vacuum line. If you have a good vacuum, it's probable the valve available at autozone part # 5941 for around $21.
To get heat while you wait to replace part, unhook silver arm on heater control valve that is hooked to the plunger. This will give you heat all of the time, but it is controlled by the bottom hot/cold switch on your heater control unit so you won't get hot in the cab. It will just circulate heat through the core.
"Blend door stuck and clicks on your 2003 Ford Explorer?\" FIRST BUY OEM BLEND DOOR MOTOR $57.00 + UP
TOOLS NEEDED :
PANEL TOOL OR FLAT BLADE SCREWDRIVER ,1/4 SOCETS 7 & 8MM
....1/4 HANDLE...1/4 SMALL EXTENTION...1/4 RATCHET
NO NEED TO REMOVE WHOLE DASHBOARD!!!
REMOVE TWO7MM SCREWS FROM THE BOTTOM OF STEERING PANEL & PRY AND REMOVE PANEL.
NEXT REMOVE TWO 7MM SCREWS ON BLACK PLASTIC STRIP THAT YOU SEE AFTER REMOVING STEERING PANEL....PRY THIS STRIP OF PLASTIC OUT JUST A LITTLE AND CUT IN THE MIDDLE .
NEXT REMOVE TWO 7MM SCREWS FROM AROUND TOP OF INSTRUMENT PANEL (BY GAUGES ) PRY PANEL STARTING FROM AROUND VENT ON LEFT BY DRIVERS DOOR ""THIS PANEL WILL STAY IN PLACE LOOSE... NO NEED TO REMOVE!""
NEXT YOU WILL SEE 0NE 7MM SCREW BY GEAR SELECTOR AREA.. BEHIND THE LOOSE PANEL REMOVE THIS SCREW.. ALSO IN SAME AREA BUT LOWER THERE IS ONE 7MM SCREW THAT NEEDS TO BE REMOVED THAT HOLDS LOWER DASH PAD ITS FOUND BEHIND LOWER CORNER OF DASH PAD.( LOWER DASH PAD GAS PEDAL AREA )
"DON'T"!!! REMOVE THE FOUR 10MM BOLTS!!!! IN SAME AREA
NEXT REMOVE RADIO /AC CONTROL TRIM WITH THIN SCREW DRIVER OR PANEL TOOL IT HELD IN BY SIX CLIPS...NO NEED TO DISCONNET ANYTHING IT WILL STAY THERE HANGING!!
NEXT REMOVE TWO CENTER CONSOLE LOWER LARGE PLASTIC CLIPS BY FLOOR MATS. NEXT UNDER SQUARE BLACK RUBBER AT CENTER CONSOLE REMOVE ONE SILVER SCREW. MOVE SEATS FOWARD AND REMOVE TWO 8MM SCREWS FROM SIDES OF CENTER CONSOLE FROM BACK SEAT.
PRY CUP PANEL SECTION THAT WAS HELD DOWN BY SILVER SCREW ...PRY UP TOP HALF OF CONSOLE STARTING FROM SECTION WHERE ARMREST DOOR IS.. DISCONNECT LIGHTER PLUG AND REMOVE PANEL .
NOW YOU WILL SEE SIX SCREWS STARTING FROM BELOW RADIO TRIM WORKING BACK TO ARMREST DOOR .REMOVE ALL SIX..THESE HOLD THE BOTTOM PORTION OF THE CONSOLE ALSO DISCONNET ONE BLACK PLUG AND PULL ALL THE WIRES CLIPPED DOWN...PULL BOTTOM PORTION OF CONSOLE TO BACK SEAT.
PULL LOWER DASH PAD GIVE A NICE TUG.. IT SHOULD MOVE OUT A LITTLE ..DID YOU REMEMBER ONE SCREW BEHIND CORNER DASH..!.STARTING FROM AREA BY GAS PEDAL LOOK UP IN THIS AREA YOU WILL HAVE ENOUGH ROOM TO GET A LONG EXTENTION WITH AN 8MM SOCKET TO REMOVE 3 SCREWS HOLDING MOTOR TO BLACK PLASTIC SECTION..
REMOVE SCREWS DISCONNECT SMALL BLACK PLUG AND PULL MOTOR FROM SOCKET GOING TOWARD DRIVERS DOOR DIRECTION. ALIGN NEW MOTOR SHAFT WITH SOCKET
TIP.......IF NEED BE..... YOU COULD PLUG MOTOR HARNESS INTO NEW MOTOR THEN TURN IGNITION ON AND MOVE HEATER/AC CONTROLS TO GET THE SHAFT LINED UP..DONT MOVE ANY OTHER WAY!!!!!!
NOW PUT SHAFT INTO SOCKET MAKE SURE YOU CONNECTED THE PLUG IF YOU HAVEN'T ALREADY!! INSTALL 8MM SCREWS AND TRY IT OUT YOU SHOULD HAVE HEAT NOW
NOW INSTALL EVERTHING BACK IN REVERSE ORDER
The heater and a/c blend door actuator motor is located behind the center of the dash just below the windshield. The steering column must be detached and lowered and the dash must be removed to access the blend door motor.