ac fan not working in truck
Discussion Starter 1 Aug 9 2010. Just like you need blowers to push the air conditioning through the vents in your home your car uses cooling fans to move the refrigerated air into your vehicles cabin.
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Everything was fine one day and the next the blower motor would not work.
. The Front Blower Motor Relay also known as the AC Relay located behind the junction block with a black connector B05 is the culprit. I posted about this problem back in mid July. However this did not solve the problem.
If your air is blowing cool but not cold the problem could be a clogged filter cooling fan problem radiator trouble or it could simply be that you need to recharge your AC. Replace and tighten the screws holding the fan motor in place. The switch or the wire harness at the blower motor has gone bad.
Your Air Filter is Dirty. The longer the components are overheated. Pop the hood of your car and locate the compressor.
The speed control module computerized resister is a known issue and I have replaced enough of these that I purchased a new speed control module to plug in on customers vehicles to see if the fan works. When filters are blocked your AC unit has to work harder creating higher energy bills and unevenly cooling your. Having your cars air conditioning go out suddenly can ruin your day fast.
Put the motor and fan back into the AC unit. Check the Fuses Relays and Electrical Connections. If only hot air comes out of the air vents in your Silverado 1500 then the problem probably lies somewhere else.
Faulty AC Accumulator Filter Drier. The interior heater AC fan is not working at all. Make sure they are tight but not too tight.
The Compressor Has Gone Bad. Faulty Car AC Compressor. Dirty cabin air filter mostly only leads to reduced cooling.
This is often the case. Without it the refrigerant cannot circulate through the system and youll never get any cold air. You should notice the disk on the pulley side of your compressor is not moving at all.
It is normally located in front of your radiator. Get in the car and turn it to AC and go back to the. Try checking the fuse and relays for your fans to make sure they are turning on when you turn the AC on.
Short cycling is when your air conditioner turns on and off again in very short bursts without completing a full cooling cycle. Having a non-working AC in the middle of the summer can be pretty frustrating but also expensive. 2004 GMC Sierra 4dr truck.
The highest setting 5 has no resistor so the blower runs on high but the high current flow ends up burning up the switchs contact on that setting or the resistor wire harness at the blower motor has gone bad. I did a search through the forums about similar problems and went ahead and replaced the blower motor resistor. Up to 8 cash back 3.
Cooling fans can stop working properly for a. Turn your cars HVAC setting to heat to blow hot air. The compressor keeps your AC moving at all times.
You may need to re-route the electrical wires at this time. Check the wirings going to the radiator fan from the control unit or relay. Lack of use tends to shock the system when it finally is.
The AC Condenser Is BlockedBroken. I usually leave the AC on either on Auto or with the fan control about 12 to 34 the way turned up. Your AC Is Leaking Refrigerant.
The most common reason that a compressor goes bad is due to long periods of time without use. The interior heater AC fan is not working at all. This is the clutch and it should be disengaged when your car is running the heat mode.
Look under the hood at the AC compressor clutch. Find the front of your AC condenser. Your vehicle should have a complete relay diagram showing the location of all of the vehicles electrical components such as fuses.
If your air pressure is normal but the air is hot you may have a compressor problem. Reconnect all wires and test the fan blade. Burning smell when the AC is on.
Run your AC on defrost mode for 5 to 10 minutes each week and your vehicle will remain mold-free. Your AC only working while you are driving might have to do with a low refrigerant level or it may be an indication that your electric fans are not turning on. When I got in and turned the AC back on the.
A dirty air filter can impede the flow of air and can cause a host of problems. Check in the connector plugs for any signs of corrosion. If there are leaves or other dirt or buildup blocking it remove them and clean the area.
When theres a problem with the fans you wont feel any air coming out of the vents. The evaporator coil sits inside your home within the air handler unit furnace or fan coil pulling heat and humidity from indoor air as it passes through. Cipriana on July 13 2015 at 1004 am.
Faulty AC Cooling Fans. Air conditioner fans not working can be a sign of a frozen evaporator coil. Your vehicle should have a complete relay diagram showing the location of all of the vehicles electrical components such as fuses and relays.
If the fan is not working even when the car is overheating there might be a wiring issue or a bad connection. Greg Zains Shows How To Diagnose and Fix A AC AC Blower Motor Not Working In A 2004 Chevy TruckI edited this video with the YouTube Video Editor httpww. 2004 GMC Sierra 4dr truck.
Putting your AC on defrost mode eliminates excess moisture and prevents mold and mildew from building up. The fan does not work. It sounds like you have a blend door issueTry cycling the air to blow on different parts of the cab ie.
Another more serious symptom that the condenser fan has failed is the vehicle beginning to emit a burning odor. Check the wirings going to the radiator fan from the control unit or relay. The evaporator coil can freeze up as a result of indoor blower fan malfunction low refrigerant charge low.
Check the AC System Regularly for Leaks Cracks. The most common causes of broken air conditioning are leaks or compressor issues. Defrostto floor to ventif you have cold air blowing good on all selections and you know your motor is working on all speedsthen you have a blend door not openingThe control for that is behind the heaterac control unitThey do go bad from time to timeYou can pick up a.
Your Cooling Fans Are Broken. Broken Wiring or Bad connection. On this particular day someone else drove my truck and the turned off the AC using the Fan control knob turned to off.
This process also removes unpleasant odors inside the vehicle. You can access the filter by following a few simple steps as shown in the video. Remove the fan electrical connector turn the AC speed to high and check what voltage is present at the fan connector wires.
When the condenser overheats all of the components of the AC system will begin to overheat until they eventually get hot enough to burn and emit an odor. Only show this user.
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