Question about 1999 Chevrolet Silverado 1500

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Why wont the slide work on the heater temp control

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The cable is probably broken

Posted on May 14, 2014

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1 Answer

Heater control knob wont slide from hot to cool


if the lever wont move at all might b a rusted/bent cable sleeve, if it does move but doesn't change the temp then it might be as simple as the cable sleeve hold down clamp came undone

May 14, 2014 | 1986 Toyota Pickup 4WD

1 Answer

My heater wont work in my truck it will blow air but it wont warm up. whats wrong or how do i fix it?


If your engine temperature gauge reads normal, then the heater control (temperature setting) is probably at fault. If the temp gauge remains on COLD, then the thermostat is probably stuck open and needs to be replaced. If the temp is normal do the following:
With the truck running (outside, of course), go to the passenger side of the truck and remove the panel that is just under the glove box. Inside that area is the heater core and the controls to operate the hot/cold vents. With a flashlight in hand look in that area as someone moves the temp lever or control from hot to cold. You should see movement of the cable to the heater core. If nothing is noted, check for loose wires, disconnected cable and any vacuum leaks. You may have to replace the heater control unit. On a vehicle of this age, your best bet would be a salvage yard or EBAY...
Good Luck and I hope this helps...

Nov 24, 2013 | 2000 Chevrolet Silverado 1500

1 Answer

Cold air only from heater


first check temp gauge on dash is it normal if so termostat is fine than check the heater hoses going inside from engine compartment if they are hot rule out control valve if it in the engine compartment sit in the vehicle and listen for any noise when you move heater temp switch from cold to hot if you hear clicking noises and no change it may be blend door accutator with moves when you slide or turn heat control nob the heater may have to be removed on some models eexpensive repair may be needed

Jan 21, 2013 | 2007 Toyota RAV4

1 Answer

Heater and ac controlls not working 1994 corvette


Are all the vents working? Does your Cruise Control work (properly) it may work and shut off. If your vents are working is only hot air or cold air coming thru, or just your defroster vent?

You have a 3 way check valve under fuel rail guard on passengers side, its a pastic barrel shape thing it rots and creates holes in it causing your ac vents and cruise control to malfunction.

next your heater control unit if you have the one with a slider to regulate the hot or cold temperature breaks easily inside unit, its only plastic. Its an arm inside unit to control the temp in car it slides a door open or closed for heat. If you look where he slider enters thru that hole space you will see a post it sits on to open and close .

Nov 20, 2012 | 1994 Chevrolet Corvette

1 Answer

No heat engine warm fan works on all levels directional control (defrost@floor) stuck on cold. ?temp control .


your heater core could be plugged if your anti-freeze color is a brownish colour , most likely your heater core is plugged also when you move the direction for heat control can you hear the blendoor move if you can then again your heater core may be plugged and if it is plugged flushing most likely wont fix it, if you don't hear the blendoor motor move the blendoor motor or the door may be damaged

Dec 09, 2010 | 2002 Ford Taurus

2 Answers

I have no heat in my 1990 Colony Park but the air conditioning does work. I suspect the problem may be in a vacuum hose that controls a blend door. Am I on the right track? Thanks.


a common problem with this model,[to include crowm victoria and lincoln town car]with automatic climate control,that commonly gets overlooked,is the temperature selector bar on the control head breaks,not allowing the operator to slide the cable that it is connected to fully close the blend door under the dash,this blend door closes off the a.c. evaporator and opens the heater core door while sending a signal to the heater control valve to open at the same time. sending hot coolant thru the heater core for heat. this problem was so common that you may have to buy a new control head as the ones in salvage yards will also be broken.if the temp select bar does not slide smoothly and evenly across the control head and the button is missing or tries to come off while sliding or is missing and the lever tries to disappear behind the control head replace the control head.

Jan 05, 2010 | 1990 Mercury Grand Marquis

1 Answer

I have a 2000 Oldsmobile Alero and the heat wont work on any settings; why?


It's possible the "heater control valve" is not working. Could be a cable or vacuume line. What ever controls it.
Also the temp controls, behind the dash, ARE controled by vacuume. Could be a line is kinked or come off.
Hopefully the heater core is not stopped up....

Dec 03, 2009 | 1999 Oldsmobile Alero

1 Answer

The heater only blows hot air


You didn't mentioned the model year of your Ford, but you might try lubricating the heater control switch which is located in the engine compartment side against the firewall. If you have someone try to move the temp knob inside while you look in the engine compartment, you might find the control valve. Once you find it, check to see if the cable is still connected, then try lubricating it with some WD-40 at 1st to get it sliding like it should. Once the cable is opening and closing the valve like it should, you will notice the temps adjusting like they should. Good luck!

May 08, 2009 | Ford F-150 Cars & Trucks

2 Answers

Heater


replace the motor for the fan.it sounds like its weak

Jan 13, 2009 | 1996 Dodge Ram

1 Answer

Clicking sound


There is an actuator motor that controls the heater door, when these go bad they make a clicking noise. If the clicking stops or pauses when you change the heat from hot to cold the actuator needs to be replaced. There is no cable on the temp control it is electrical.

Dec 24, 2008 | 1999 Ford Windstar

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