What is the problem when ac not heating or cooling?
They are too numerous to list here.
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Does a car AC heating function the same way as normal room ACs or Split Units operate such as in reverse cooling operation?
All car ac's work like most any other ac. I don't know of any car ac's that work like heat pumps that both heat and cool. Every car I have seen provides heat thru a heating core which is heated from the water circulated from the engine. , EzForJesus
Radiator fan not coming on in a 92 Grand Am where is the fan relay Having ac problems only cools when accelerating also some overheating problems when idling?
Answer . \nI had a 1994 Grand Am SE and it had the same problem. The fan is probaly not working. When you are going down the road, air enters the front of the car and helps cool the radiator and engine down. When it is sitting the fan should come on. It could be a relay, but it probaly the fa…n. We had the fan replaced and that fixed it.. Answer . \ni had that problem too. if you have the know how you can hook up your existing fan straight to the battery to see if it is indeed a relay or the actuall fan. if your fan still works then try the relay. you can also hook up your fan to a toggle switch inside the vehicle, or run it to a switched hot terminal in your fusebox and it will run as long as the car is on.. Answer . I also had the same problem I just took the fan out cleaned it and oil and greesed up the motor and insie and now it works fine.. Answer . I had that problem too, I changed the engine coolant, and somehow that fixed the problem. (MORE)
What do you do if your 1996 Ford Windstar rear AC blows cool air from the ceiling vents but warm air out of the heating vents at the same time?
\n. \n Answer \n. \n. \ncould be that your vent on your dash is open.it will pull outside air in and if you are using the ac the air coming in the vent is from the hot weather outside.........there is a little spinning knob between the vents , make sure it is closed
What could be wrong if you had the blender door on a Ford Expedition replaced and that fixed an AC problem but now there is no heat?
On my Son's 98 expedition we found that the A/C was staying engaged all the time. we disengaged the A/C clutch and now we have plenty of heat.
Answer . Check the fuses first. Next remove, test, and replace the resistor pack located behind the glove compartment. To get access to the resistor pack, unscrew the glove compartment and remove it, you will see it right there. Good luck. Chris Coleman.
1994 grand am blows heat out of dash vents when set to defog not window vent cool air blows out of window vents when climate control is set on ac which no longer works is this a fuse or module problem?
Answer . \nThere is a small vacuum line for accessories in the engine compartment on top of the throtle position sensor that comes off and will cause this problem. very small hose...look on the intake throtle body for the sensor...it will have other vacuum hoses attached there also but this one …is easily overlooked cause its so small. Hope this helps (MORE)
Answer . \nim goin through the same problem right now..it was suggested to me to check the thermostat
Answer . If the car is over heating then it could be that the electric cooling fan motor is not working so the fan cant cool the engine. Another thing to look at is your temp sensor. This tells the fan to come on at a certain temp. Something else to do that might help is to flush the radiator.… (MORE)
Why would your Range Rover 2001 start over heating as soon as the AC is turned on It cools as soon as it is turned off The ac is also intermintenly cooling?
Answer . \n. \nI've seen this on P38's where the temp gauge rises when A.C is turned on.\n. \nIt was due to a short on the earth wire (attached to the body under engine) - temp was not actually rising, just giving a false reading.\n. \nFrom memory the gauge rose further (into the red) if ligh…ts were also switched on - further load on the system.\n. \nHope this helps. (MORE)
What is the problem if Both cooling fans are not coming on even with the ac turned on in a 1995 Camaro Z28?
Answer . \nYou may need to check your ground to make sure its connected. Many people have to end up rerouting it b/c it comes loose.. Answer . \nCheck the relay and fuse under the hood.
02 ltz Trailblazer and the Heating and AC fan will not work What is the problem and is it easy to fix for a novice?
Answer . \nCheck for a blown fuse first. If the fuse is OK, then the blower motor resistor pack or the blower motor itself may be bad.
Answer . First check that your coolant lines going to the evaporator aren't cap off. the other possibility is that your control knob on the instrument panel may not be executing it's task. checking the heater hose is a DIY task. The control function will require some knowledge. fish
Cooling fan does not come on until after the car is off on 1993 Honda accord If the ac is on both fans work What could be the problem?
Answer . I don't think you have a problem unless your temp gauge or light is coming on. The reason your fan comes on after you shut the car off is........ as you are driving and the car is running at operating temp, the air is flowing across the radiator cooling the coolant that circulates throu…gh the engine and radiator.. When you stop, the water pump no longer circulates the coolant and you no longer have air flowing across the radiator fins cooling the coolant either. The electric fans are set to run off a relay, and when you stop, the fans come on to cool the coolant down until it cools to where the relay kicks off and the fans stop.. However, the cooling fan should not come on each time you shut the vehicle off or if you're idling like mine did. If it does, you may need to replace your thermostat or you may have air in your system. Replacement of the thermostat is simple but be sure to buy the OEM from the dealership. My experience has been and the dealership has confirmed, that the aftermarket thermostats do not work well in these vehicles. My local dealership also advised that once the work on the cooling system is complete, they run the vehicle for no less than 1/2 hour with the radiator cap off. This allows air to escape the system. Since I have replaced the thermostat and "bled" the cooling system, my cooling fan only comes on during the hottest of weather. (MORE)
Your 99 alero overheats and the cooling fan don't turn on only when the ac is on what could be the problem?
there is a Senior that kick it the fans on it is located under the throttle body or it might be the primary fan is bad and only the second fan is working
Answer . \nNeed more specific information. Give more details. Is the outdoor unit running, is the indoor unit running, what type of thermostat, heatpump or straight AC.
1993 mercury sable radiator cooling fan will not kick on when car heats up only when AC is turned on high what is the problem?
Answer . Could be a bad temperature sensor Usually located at the rear of the radiator about 1/3 down from the top
96 ford windstar your ac blows out heat you were told that your clutch or compressor was the problem is this true?
Start with the much more common problem of a failed temperature blend door MOTOR/actuator. Not only more common, but a whole lot less expensive See "Related Questions" below for more
The heating cooling ac fan stopped working in your 1985 60 series wagon where are the relays or what advice do you have about what the prob may be?
Usually when fans stop working it can be contributed to the heater blower motor resistor which is either located in the heater duct underneath the dash or under the hood next to the blower motor.
Answer . this is an incomplete question.only 'yes' or 'no' is possible. If it's getting too hot and there's no heating in the cab, then you need water n antifreeze. Keep it topped up! if you are loosing alot of water then find the leak n fix it....it is a silly question
A heating flap inside the dash may have broken. If your passenger and driver side have the ability to be at different temperatures of heating, having the temperatures too far apart from each other can sometimes break this flap, making the vehicle unable to give you either heat or a/c, instead it jus…t blows. This happened to my 2004 Grand Cherokee, its very annoying to fix, if that is your problem. . The first thing you should do is read the fault codes, to get a general idea of the problems you are having. Since you have the 2000 Jeep Grand Cherokee Limited that has the HVAC system with the dual control (AZC ), you will be able to read the fault codes for your HVAC system from the control panel on the dash. To read the fault codes: 1. Turn on the ignition switch. 2. Turn on the AZC system. The temperature settings should be displayed for both sides. 3. Simultaneously hold down the AC and the Re-Circ buttons. 4. Then turn the driver's side temperature (Left) control knob to the right (CW) one click. 5. Release the AC & Re-Circ buttons. If there are no fault codes, the "00" display value will remain in the window. If there are any codes, each will be displayed for one second in ascending numerical sequence (note: no effort is made to display faults in the order they occurred). The left side set temperature display will be blanked and the right side set temperature display will indicate current and historical codes (8 historical max) presently active. Once all codes have been displayed, the system will repeat the fault code numbers. This will continue until the left side set temperature control is moved at least one detent position in either direction, by pressing both the A/C and Recirc buttons at the same time, or the ignition is turned off. (MORE)
What would the problem be if the AC in a 2000 jeep Cherokee goes back and forth from cool to not cool?
It is probably low on R134 refrigerant, compressor clutch may be going out also but it is most likely in need of a recharge.
Hi, Good question and the answer is ( YES! ) as long
Your 1990 accord over heats in city driving with the AC on if you turn the AC off it cools down it does not over heat at highway speeds?
the ac compressor puts a significant extra load on the motor, so motor has to work harder, creating more heat. at highway speeds, there is a much larger volume of cooling air flow through the radiator helping keep it cool.. I suggest you give an inspection to the cooling system. I believe the Honda… has an electric fan that is thermostatically controlled, do you hear it running when the car is overheating.? If not, check the fan and thermostat.. Also, since the car is almost 20 years old, the radiator may need a little service. (MORE)
If the AC in your car is not cooling, chances are your airconditioner is needing repair. You probably have a pin hole leak inthe core of your car's heater. If your car has a cabin filter, be sure it is clean or replacedwith a new filter.
How do you measure Sub-Cooling for a R-22 AC system SUB-COOLING IS THE THE "HEAT BELOW SATURATION". THE SUB-COOLING LEAVING THE CONDENSER IS CALCULATED BY TAKING THE (ACTUAL)CONDENSING TEMPERATURE AND THEN SUBTRACTING (MINUS)THE LIQUID REFRIGERANT TEMPERATURE (USE THE CHART)LEAVING THE CONDENSER.=T…HE SUBCOOLING. NORMAL SUBCOOLING AT THE CONDENSER OUTLET SHOULD BE 10*F. THIS WILL ENSURE THAT LIQUID WILL NOT FLASH INTO VAPOR BEFORE IT GETS TO THE EXPANSION VALVE, SHOULD THERE BE A SLIGHT INCREASE IN TEMPERATURE OR A SLIGHT DECREASE IN PRESSURE DUE TO A PRESSURE DROP. SUB COOLING INCREASES CAPACITY & PREVENTS FLASH GAS IN THE LIQUID LINE AHEAD OF THE EXPANSION VALVE. I HOPE THIS IS VERY CLEAR, AND HELPS U FIGURE OUT HOW TO MEASURE IT. TODD S. FISCHER, PRESIDENT OF THE TAMPABAY CHAPTER OF RSES THE REFRIGERATION SERVICE ENGINEERS SOCIETY- BECOME A MEMBER SOON!! (MORE)
Your ac does not work on 1st 2nd or 3rd only on 4 but does not blow cool air what might be the problem Daewoo Lanos 2000?
ck for a resistor gone bad. alot of times when a fan switch only works on high, it is the resistor.
AC on 99 Explorer does not blow cool air until 4th level setting or until its on Max Air what are the possible problems?
Temperature control door actuator might be shot. More likely the female slot that the male actuator pin fits into has broken in half. Ford repair is near 1000.00 cause they have to take part of the dash out. There is a do it yourself fix that worked for my 96 ranger. It involves popping the actuator… out and drilling a small hole in the square actuator pin and inserting a small nail, pin, or something about 1/2 inch long through the square actuator pin. This allows the square actuator pin to catch on the remainder of the broken actuator hole which allows the actuator to open and close the temperature control door again. The actuator is located right behind the glove box on top of the heater chamber. Google - Fix temperature control door on ford ranger and you'll probably come across the same site I found 2 years ago with a more detailed desription with some drawings too. I'll bet that's what it is. (MORE)
Most likely. You just need add Freon. Real easy an cheap fix. If your Freon is full and your AC still not working. Probably gonna be your AC pump. That's not a cheap fix.
If the ac is on and no cool air is coming out you may not want to turn the ac on at all. When you put the ac on, verify that the compresor is actually coming on, if you can see it spiining whne turned on, you may have low refrgernet in the sytem or a blockage. It is best to have it look at. If it is… run when it is not working properly, you can severly damage the ac sytem if its being run when somthing is wrong. (MORE)
The cooling fans are set to come on when the coolant reaches 224 degrees (low speed) and 240 degrees (high speed). If they do not turn on (without the AC) then either your coolant does not reach 224, or the switch that turns them on and off is bad. The switch should not be hard to replace, or too ex…pensive. Since you mention that they do come on with the AC, then we know it's not the fans themselves. (MORE)
Yes. See "Related Links" below to the Autzone.com repair guide with detailed instructions and photos for replacing either front or rear heater cores. NOTE: Autozone now requires free registration to access the repair guides. More than worth the extra effort for these photo/illustrated instructi…ons. Rear Climate Control Problems Be sure to visit the Automotive Forums linked below - an awesome, in-depth review of trouble-shooting rear climate control problems. Answer Replace the rear control switch on the front panel. It's easy to fix and is the problem. Is about $27 from Ford. Pull out the cup holder, remove the two screws, the cover pops out and more screws remove the panel. One screw holds the switch in, remove the electrical and vacuum connectors. That is one possibility. Another is a vacuum leak. Personal experience with help from someone in a forum: Check the plastic hose in the engine compartment on the firewall side of the passenger-side hinge. It can rub against a metal tube (for instance) and eventually wear a hole in the hose. I didn't want to tape it, afraid it might not last in hot engine compartment, or that it might block vacuum. Sales staff at AutoZone gave me ~1" piece of connecting hose. Cut vacuum hose at leak and install connecting hose. Leak wasn't bad enough to affect the front A/C. Answer if the blower is working it is not either blower control you will more than likely just have to replace the climate control directional switch, this switch allows hot or cold air to be directed to the places you want it to go try changing the rear air control switch on your das panel. this happened to me on my 96. or it could be a vacuum leak. more than likely the switch. about 30 bucks at ford Answer I just purchased a used 96 Ford Winstar and it had the same problem. Turned out to be a bad switch in the dash. Also, the switch on that model is run using a vacuum line, mine also had a hole in it contributing to the problem. I'd check that first as it was the entire problem with my air. Hope that helps!!! blender door not working . Ours did the same thing in blowing hot air to the floor even when the AC was on. It is a bad switch on the front of your van- the switch where you can either control the rear climate or switch it to rear control (the one all the way to the right if I remember right). If you are in a pinch and don't want to buy a new switch you can manually manipulate the vacuum lines on the back of the switch. If you take your console cover off and unscrew the plate that fastens the 4 switches to the dash you have access to the wires and vacuum lines. If I remember right there is a yellow and a tan vacuum line that you can pull out from the switch. If you use a piece of small flexible plastic tubing you can put a "jumper" on those two vacuum lines for the summer. I found that a piece of wire insulation works great (strip a piece of wire and use the piece you remove from the wire). For the winter just remove the jumper and the heater will work. Doing this just affects the setting of hot or cold and has nothing to do with the fan speed so everything will work as normal except you have to switch the jumper as applicable for hot/cold. my 1998 windstar was blowing hot air from the rear vents when i turned on the ac and turned on the rear fan from the front controls , the rear fan control the one right behind the drivers seat next to the ear phone jacks did not function so i disconected it and it started to blow cold air.;.; so i have to think it was a broken switch;..;.;wierd huh Answer the vents might be pulled apart and some cold air is being mixed in. if your vehicle is using dual aircon meaning to say a separate evaporator for front passenger and a evaporator system for back passenger then possibly the problem is the expansion valve of the back passenger evaporator system. it is not any more functioning properly and it has to service by a qualified aircon technician to properly removed the refrigerant ,full down the said evaporator system to be able to replace the defective expansion valve. They will have the evaporator clean and install new expansion valve with same capacity as the defective one. After they have installed it and charge the system then you will enjoy a cold ride. (MORE)
It sounds like your A/C system needs to be recharged. You can buy a kit at your local parts store and do it yourself (follow the instructions very closely).
How do I fix the ac when the problem started with a loud click then steam rose from house ac and now ac doesn't cool?
When you say house ac I am assuming you mean the condensing unit outside your home. If you had what looks like steam came out then this was probably refrigerant (freon) that was venting out through a leak or hole in system. If the noise was more of a pop then a click then one of the terminals of t…he compressor blew out when your compressor shorted out. all in all ...time to call a service company. (MORE)
So little information to work with... . Not blowing air?? . Temperature cannot be adjusted or always lukewarm? See "Related Questions" below for more
I don't know about yours, but mine did that and it was full of ants that had gotten between the connectors. . Answer: . Depending on the age of your unit, it could be one of the following: . Clogged filter - remove it and clean it. . Clogged coils - you may be able to remove debris yourself,… but you may need to contact a service person to do this also . Bent and/or damaged fins - these may be straightened to some extent, but youmay need to replace the unit. . Low CF pressure - If the refrigerant is low, it will not recondense in the compressor properly. A certified service professional can recharge your system and check it for leaks. Cost for this can vary, so shop around. . Burnt compressor motor - there are two sounds your air conditioning unit will make, the fan (what moves the air) and the compressor. the compressor has a deeper, heavier sound. If this is not running, a fuse may be blown, or the motor may have quit. (MORE)
System needs charging T-stat is set to heat breaker is off (there are two of them) system is broken
Trane AC heating unit stopped runningbut the breaker not blown and was cooling just fine then appeared to be no power to thermostat?
The first thing you check is your low voltage, you have a transformer inside the unit near the electrical panel or relays. Check transformer high side and low side, you should have 24 volts. Got to thermostat and check wiring your red wire should have 24 volts as well fed from your transformer. Anot…her way is if you have the red wire connected to your yellow wire at the thermostat after you remove the thermostat you will see the wires i am talking about. Connect them together ans see if your unit comes on. If it does replace your thermostat. Hope this helps.. Mysterio619j. (MORE)
First check to make sure that the system has freon, if not then you will have a leak then check the electrical system................
Yes(!) the water pump can cause problems with heating and cooling. A failing water pump is not able to properly move engine coolant - making it hard for the heater to produce warm air in the cabin. For example, you may find the heater works better when the engine is turning faster like while drivi…ng (versus just idling) - this could be a water pump with worn or a broken impeller. See "Related Questions" below for more about Taurus/Sable heating system problems (MORE)
your ac is not cooling is your ac pumping or do you have a blown fuse check fuses first then have ac gas checked for correct amount if this is over full it cannot circulate properly most times it will need some added if that's not the problem you may need ac thermostat checked,expansion …valve may be bad,or the compressor may be bad take it to a reputable shop to have it looked at or it could cost you big bucks (MORE)
Why does a home ac blow heat until it gets about 2 degress below what it's set for and it start's blowing cool air?
That is the function of the fan/limit control on your furnace. When the thermostat nears the point where the room temp setpoint is satified it shuts off the flame. The fan/limit control keeps the fan on for a minute or so to cool the furnace down before shutting off. Conversly, if your watch your fu…rnace at start up you will see the flame lights first but the fan does not come on for a minute or so to allow the furnace to get hot and avoid blowing cold air into the home. (MORE)
What could be the probleme with a 2006 Silverado that has no hvac when turned on no blower ac or heat any thoughts or suggestions?
Check all of the following........... 1. Power and ground to the blower motor. 2. Blower motor itself. 3. A/C - Heater controller. 4. Lastly scan the vehicles computer to see if the ECM is getting the signal......
Several times can cause this........ 1. The AC compressor is bad. 2. You have a restriction in the system. 3. You may have overcharged the a/c system. 4. You may have added too much oil back into the system.
Your Ac and heat will not go to only vent and but is blowing softly on defrost floor and vent it is a 200 Chevy Impala what could be the problem?
You need to check the vacuum lines for the a/c system for leaks, breaks and loose ones first.......
The AC unit is first blowing out hot air when it kicks on and then it turns to cool Why does it do this and is it a problem?
There probably is no problem. When the a/c first comes on the air in the ductwork is at room temperature, or warmer if the duct runs through an unconditioned space like an attic. Once the coil at the furnace has cooled down, it can begin to cool the air that is supplied into the rooms. Try letting t…he fan on the furnace run continiously while your in a/c mode. You change it at the thermostat. This will give you a more consistant temperature throughout the house and keep air in the ductwork the same temp as in the rooms. (MORE)
Why doesnt the outside unit Goodman CPLE36-1 central AC unit with heat pump turn on but inside the air blows though it's not cooled and the heat only works on emergency heat?
I would first try to turn the stat up to 80 degrees turn off both breakers, one to the outside condenser and the other to the air handler inside, leave the breakers off for about 30 minutes. then turn the breaker to the out side unit first then 5 minutes later turn on the breaker for the inside unit…. Wait another 5 minutes and turn the stat to 68 and wait a few minutes system should reset and work like it should. If that don't work I would say the starter capacitor is bad. Or the compressor is bad. Or may need to refill the lines. If the first don't work it is time to call a repair man. Hope it works Sincerly Troy H (MORE)
P=VI here P=8000 Watts v=220 V I=8000/220 = 37 A so you should use 37A Breaker
If you are talking about the no air movement at all, then the fan motor or switch is the most likely. An easy check for the fan motor is to disconnect the wires going to the fan and use extra wire and try a direct 12 volt connection to the fan, if it runs then the switch is the problem. Note: Ple…ase test the fan with the vehicle off and isolated from other electrical connections, but you do not have to remove the fan from it's housing. (MORE)
That will all depend of the type of system being used. Heat in an A/C is generated by the compressor and the heat extracted from the air it is conditioning. Heat in a heater can come from fire (gas, oil, wood) or geothermic extraction from water under ground.
I don't think AC works the way you think it does. There is nocooling fan in an AC system.. the operation of the engine fan(which draws air through the condenser and radiator) is controlledby a thermal switch, and its operation remains unchanged with theAC on. The blower motor which pushes air throug…h the HVAC ducts isthe same one used for both heat and AC, and is controlled typicallyby a switch. AC cools by pressurizing and depressurizing the refrigerant andcycling it through the AC system, which causes it to absorb ambientheat and heat drawn from the passenger compartment.. it then cyclesthat heated refrigerant through the condenser, where the heat fromthe refrigerant is rapidly exhanged to the air passing through thecondenser fins, causing a rapid cooling of the refrigerant. To do this, certain pressures must be maintained in the system, andthis is done by the compressor. Most automotive AC systems use acycling clutch compressor, where the compressor clutch is engagedand disengaged through pressure switches in the system in order toregulate the system pressure. (MORE)