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Insert the key into the ignition and turn to the "On" position. Anytime there is a problem with the temperature of the air conditioning system, it could be a problem with the blend door actuator. Air should blow out of the vents at different intervals during the reset. It is not only responsible for pumping the refrigerant throughout the AC system but also converting the refrigerant from gaseous state to liquid state as it passes through the condenser. You must start the Dodge Caravan to reset the Dodge Caravan climate control. Sometimes changing the temperature can temporarily stop the sound. Therefore, the filter performance will not increase significantly even after cleaning. Rear A/C Block Off with Screws Gaskets Aluminium Alloy Rear Air Conditioner Block Replacement Fit for Town/Country Caravan/Grand Caravan 2012 C 2016. Press the top button to complete the reset. There are many reasons why the heater in your Dodge Grand Caravan is not working properly. The excess oil may pool in various places of the AC system and can coat the inner walls of the evaporator and condenser, diminishing their ability to absorb or dissipate heat, consequently reducing the overall cooling performance. Leak was due. The cabin air filter captures most of the dirt or other airborne particles, but some particles escape and can get lodged on to the evaporator. If the blower motor in your Grand Caravan is not spinning fast enough either due to an internal defect or due to a fault in the resistor/control module, the airflow from the AC vents will be weaker and the heating performance will be degraded. In any case, it is advisable for laypersons to visit a workshop. The blower motor is the central component of the air conditioning system in Grand Caravan, responsible for blowing cold air through the AC vents. The most common symptom of faulty blend door actuator on Dodge Grand Caravan is a slight clicking sound repeatedly coming from under the dashboard. Climate control module is the brain of the air-conditioning system in your Dodge Grand Caravan, responsible for controlling all the components in the system. The air conditioning is a blessing, especially in hot temperatures. It's an obvious rear mode door or switchology problem as stated. 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Heat up and heat down?I have a 2017 Dodge Grand Caravan back AC very hit and miss - not working, Pull the M 11 fuse if you dont have the power button. If you are only topping off the refrigerant in your Dodge Grand Caravan with off-the-shelf refrigerant recharge cans and not repairing the leak, you may have flooded with AC system with oil since these cans often contains added oil. 1. The minivan was first manufactured in 1983 and remains in production as of 2011. This information is typically located under the hood and/or in the owners manual. Due to factors beyond the control of RB The Mechanic, it cannot guarantee against unauthorized modifications of this information. Too much oil: If there is excessive amount of oil added with the refrigerant, it can cause compressor performance issues which reduces cooling efficiency, and can also cause premature compressor failure. Had front blower fan not working and rear was. If the temperature changes a little, the module may need calibration with the scan tool (StarScan, StarMobile, etc). Once we know what the actual charge is in the system then we can start narrowing it down to just the rear system and a possible door motor issue but if the charge is weak then we will not fix it unless we check this first. Check the system pressure. The heating system in Grand Caravan uses hot coolant or antifreeze from the engine block to heat the interior of the vehicle. If one fails the test, you get the blinking rear defroster.Problem is a bit deeper because if you replace the failed blend door actuators with replacement parts (such as Dorman), the new actuator will work, but still fail the self adjustment test. So, even if you recharged your Grand Caravan AC at the recommended pressure, the system could still over pressurize when the ambient temperatures get warmer. There are flush kits available in the market that can help you do the job yourself. Dodge Caravan Climate Control Air Conditioner Blows Hot A/C blowing hot air CHEWBUG2 MEMBER DODGE CARAVAN I am a lady and do not know alot about cars, but I think I got scammed when I took my car in to have the a/c fixed. Finding these mostly very small leaks is often not easy. A clogged or leaking condenser can also be the reason for air-conditioning not working properly on your Grand Caravan. Happened on the 2008 Dodge I drive for the company. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. Jul 18, 2012. Insufficient lubricant: The compressor in Grand Caravan needs lubrication to function properly and minimize mechanical wear by reducing friction. If the water pump has worn out and the coolant is not being circulated as effectively as it used to, it can cause the heater to stop working properly because theres less coolant available to transfer heat between the engine and the heater core. Warning: Wear gloves and safety glasses before recharging the AC to avoid accidental exposure to harmful chemicals in the refrigerant. Over time, these dust particles can builds up on the fins and block the air flow through the evaporator, resulting in poor cooling. Don't even try that "method" .it's a copy of a dumb directions of a dealership website word for word And it continues to say that the left buttons are for the washer fluid and the rear defroster or something like that . year to help you gain confidence about one of your largest purchase decisions. Keep in mind that the front AC will not cool the van as good as having a twin system. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The most common reasons a Dodge Grand Caravan ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. You can use pressure washer for cleaning, but make sure its at low pressure setting, as high pressure can damage the delicate fins on the condenser. If one is hot and the other is cold, you have a plugged heater core. Your vehicles air conditioning system has an expansion vale or an orifice tube, depending on the model. The AC will start to calibrate and reset. Did you ever fix it my van has the same problem but all my blend doors ect.. 2014 caravan. But if the thermostat has developed a defect and is stuck to open position, the coolant will continuously flow through the radiator and the engine may take a long time to reach its optimal operating temperature. The function of both expansion valve and orifice tube is the same, to restrict the flow and reduce pressure of the refrigerant before it enters the evaporator coil. The vehicle was not repaired. A professional mechanic can swiftly diagnose the heating issue for you. 24,855 miles. As a rule, there is no avoiding a change if the filter is dirty. The buttons of the air conditioning unit may start flashing due to a momentary electrical failure, in which case a reset of the AC is necessary. When looking for the reason, you should always start with the most obvious cause, insufficient amount of refrigerant. Over time dust can accumulate on the fins and reduce the air flow, which reduces cooling performance. If you dont service the AC system in your Grand Caravan for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. Mechanic refilled with Freon to include dye so that he could detect a leak. nothing. Another patient said the AC is just blowing warm air. 3. You cannot repair a broken blower motor, the part must be replaced with a new one. However, if you turn the A/C completely Off, turn the ignition system off. Next You will need to press the highest and lowest buttons on the AC control panel until the AC light begins to flash. All do-it-yourself projects entail some risk. The lights will turn off and when they come back on press the AC button when it is blinking and that will turn it back on. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC not blowing cold air in Grand Caravan. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For us shade tree mechanics and cheap people the best fix is to just block the rear ac off. 8 people found this helpful. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor cooling. Had a similar issue, no cold air and diagnosed the problem to the rear expansion valve being clogged with some small debris and fine metal shavings. I have a 1994 Dodge Caravan with 130,000 miles on it. Don't worry, you can still start your vehicle - the battery is only used to send the signal for locking/unlocking. Like the radiator, the air conditioning condenser on Dodge Grand Caravan sits at the front of the vehicle and is responsible for releasing the heat from the refrigerant into the ambient air. HOLD the buttons for 10 sec and the instrument cluster will go into a diagnostic sequence. Thermostat is a part of the cooling system in Dodge Grand Caravan which ensures that the engine reaches its optimal operating temperature as quickly as possible and maintain it under all operating conditions. If the condenser is dirty on your Grand Caravan, the simplest solution is to clean it. The cabin air filter captures most of the dirt or other airborne particles, but some particles escape and can get lodged on to the evaporator. Check all front HVAC fuses and relays M11 and J15 I believe, all good. The pollen filter, also known as the cabin filter or microfilter, is a central component of the ventilation system in your Dodge Grand Caravan. A worn out or weakened blower motor can also produce abnormal sounds when in operation. There are two ports in the air conditioning system of Grand Caravan. The water pump is the heart of the cooling system in Grand Caravan responsible for pumping coolant throughout the system and cooling the engine. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and will need recharging after every few years. If you only install a new compressor here, another failure is inevitable, as the chips immediately destroy the new component. Effective March 26, 2020 and until further notice, UPS, FEDEX and USPS have suspended their Service Guarantee for all shipments from any origin to any destination. Remove the blower motor, typically located under the passenger side dashboard, and inspect the condition of the cage. Just have it refilled and you can drive with pleasant temperatures again. 2000 Grand Caravan - drivers side heat not working - Passenger and rear are fine 2 Answers. Larger leaks may already be heard or you can find them with a leak detection spray. Feel both the rubber lines going in and out of the heater core after the engine has warmed up. She currently resides in South Florida. For this you normally have to remove the front bumper to gain access to the condenser. That means every time you start the van, climate controls go through self adjustment and check every blend door actuator and blend door. If your Grand Caravan has push start/stop button, then its possible that your vehicle may not start due to weak key fob battery. The vehicle has an air conditioning system (AC) to cool passengers during warm weather and hot drives. Hope this helps. Therefore it is recommended to do this at a workshop. Click on the links below to see my videos on how to replace rear or passenger blend door actuators.This vans are equipped with \"self adjusting\" blend door actuator system. Keep in mind that reduced airflow doesnt always indicate a problem with the blower motor, as it can also happen due to a clogged cabin air filter, dirty evaporator, or a bad mode door actuator. Two compressors for a rear air problem? If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. A defective sealing ring, a worn line or a condenser that has been damaged by a stone chip are the most common causes. 0%. The vehicle replaced a 2013 Chevrolet Equinox. QuiteAlright is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video. If the blower motor in your Grand Caravan is not spinning fast enough either due to an internal defect or due to a fault in the resistor/control module, the AC cooling performance will be degraded due to reduced air flow. If the compressor fails, the AC will only blow warm air. My rear a/c is not working in my 2008 town and country, blowers work fine but only blow warm air. 3.8 out of 5 stars. 0% 37 % of the time it's the AC Refrigerant Leak 0% 21 % of the time it's the Climate Control Electrical Issue 0% 12 % of the time it's the AC Compressor 0% 30 % of the time it's A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling, heating and air flow. This is mostly common in older vehicles. In addition to the normal loss, component defects are usually responsible for the escape of the refrigerant gas on Dodge Grand Caravan. 37 % of the time it's the. The AC stopped working a while ago. Leak discovered. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your Grand Caravan. 2019 Dodge Grand Caravan 35 Anniversary Model. As a rule, there is no avoiding a change if the filter is dirty. If the coolant level is low, open the cap and pour some coolant into the tank until it is between minimum and maximum mark. Over time, these particles build up on the fins and block the air flow through the evaporator, causing reduced air flow in the cabin and poor heating or cooling. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. fan is running and no air is moving. The most common causes for AC blowing hot air in Dodge Grand Caravan are low or overcharged refrigerant, compressor malfunction, dirty condenser or evaporator coils, faulty blend door actuator, defective evaporator temperature sensor, bad AC pressure sensor, and bad fuse or relay. Leaks in the head gasket can cause all sorts of problems in your Grand Caravan including poor heater performance. Before you consider replacing the heater core in your Grand Caravan, it is recommended to flush the existing heater core. Over time, the heater core can begin to rust or mineral deposits can form in these channels, blocking the flow of the coolant. Therefore it is important to diagnose a failing water pump at early stages to avoid expensive repairs later on. Therefore, the filter performance will not increase significantly even after cleaning. Vehicle History's team of automotive experts brings you the most accurate and up-to-date used car information. Dirty evaporator can cause weak airflow and reduce the heating performance in Grand Caravan. Home Troubleshooting Dodge Grand Caravan heater not working causes and diagnosis. Symptoms of a Bad or Failing Blower Motor Relay If the blower motor does not function, car fuses are blown, or relays are melting, you may have to replace the car blower motor relay. There are test kits available in the market in which you just have to insert a tube filled with colored liquid in the radiator (in place of the radiator cap), and then start the engine. In this way, it can be determined whether the loss of refrigerant is due to a defective condenser. A leaking condenser can lead to a loss of refrigerant and reduced cooling performance of the system. Place the key into the ignition and switch it to the "On" position. A patient turn the temp control to warm because the air conditioner was too cold. To improve heating efficiency, it is recommended to switch on air recirculation mode. It does this by allowing water to enter the engine when it is getting hot, and by keeping coolant from entering while the vehicle warms up. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. Connect the pressure gauge to the low pressure (L) port in Grand Caravan. ZIP: #1 Paul Reputation 2,020 #2 tenspeed Reputation 1,510 #3 Dan Ritz Reputation 1,480 The rear HVAC housing has electric stepper motors driving the temperature blend door (cool/warm) and the air mode door (side/headliner vents). First You will need to start the van and make sure the mode in the vehicle is set to panel. (But it bothers the wife about 10 days out of the year.) Remove the blower fan in a Dodge Caravan by first disconnecting the battery, then waiting two minutes to disable the airbags. Although most of the dirt and other particles in the air are filtered by the cabin air filter, but some particles do escape and can cling to the fins of the blower cage. Checking coolant level in Grand Caravan is a fairly some job. Once the leak has been found, this must be closed again by replacing the respective component. FAILING. If this is the case, the only option is to replace the broken part. If it stops permanently I'll pull the carpeted cover under the glove box and see if I can pull, clean, and lube the actuator. It is a well known problem and any Caravan I have every seen has had this problem. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. There are many reasons why your Dodge Grand Caravan AC is not cooling properly. Mine is 2011 and has turn knobs for fan & temp. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. The refrigerant pressure is affected by the outside atmospheric temperature. The system is filled with forming gas (nitrogen with a little hydrogen) in the workshop. A bad blend door actuator usually cannot be repaired and must be replaced with a new one. When you press the AC button in heating mode, the compressor turns on and the evaporator cools and dries the air before it enters the heater core. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced heating and airflow. Low coolant level or air in the cooling system can cause the heater to stop working properly in Grand Caravan. Specifically replace the condenser, evacuated, and recharge the AC system with R134 refrigerant on a 2002 Dodge Caravan minivan. Had a similar issue with a blend door on a 2009 Honda Civic and those blend doors are VERY easy to get to, so I checked them both and the passenger side was sticky, sprayed some lube on the actuator arm and dusted the gunk off and it's been working since. This is . experience as repair shop manager and technician. Maybe only the condenser side fan is not working. You dont have to go to a workshop to check for a leaking head gasket in your Grand Caravan. It is generally recommended to replace the cabin air filter every year at the start of the winter season. Pulled the glovebox down and looked at the blower motor area for a baffle, didn't see one but got up under the glove box and banged on the bottom of the blower motor housing and the fan kicked on and has continued working. This van has controls for the rear at Ask an Expert Car Questions Dodge Repair This answer was rated: Amedee, Dodge Technician 37,957 Satisfied Customers ASE certified tech advanced level specialist. So, all of them must be inspected when diagnosing poor air flow. This vehicle was purchased in July 2014 and as of July 2015, the REAR Air Conditioning unit has stopped working. Dirty evaporator can also be the reason for AC problems on your Dodge Grand Caravan. The vehicle was taken to all star Dodge Chrysler Jeep ram at 11503 st charles rock rd, bridgeton, mo 63044, (314) 291-2050 where it was diagnosed that the power control module needed to be replaced. When looking for the reason, you should start with the most obvious causes: low coolant level or air in the cooling system, and clogged heater core. In that case driving at high speed should blow some cold air from the AC. Check all the relevant fuses and relays related to the air-conditioning system in your Grand Caravan. We research hundreds of models each YOU HAVE TO GO WITH DODGE OEM BLEND DOOR ACTUATOR (MOPAR).Part #: M8679001Watch my video for the full explanation.Rear temperature blend door actuator replacement:https://youtu.be/F3QhRBu5AvgPassenger side blend door actuator replacement:https://youtu.be/CYTsrmHK9uUGive me your support and join the channel:https://www.youtube.com/channel/UCvyScrAKiK8NL66K4yrQTnA/joinThanks for watching.Don't forget to Like the video / SUBSCRIBE to the channel! DISCLAIMER:While QuiteAlright strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. 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The most common causes that hinders normal operation of air conditioning system on your Dodge Grand Caravan are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system. Insert the key into the ignition and turn to the "On" position. Turn on the AC and set it to the coldest setting, and the fan speed to maximum. Insufficient amount of refrigerant is still the main cause of a non-functioning AC system. Dont worry, there is no risk of suffocation, as the air recirculation mode still allows up to approximately 10 percent of the air coming from the air vents to be fresh air from the outside.