A knocking noise could be another indicator of a bad blend door actuator on your Grand Caravan, although its quite rare. If the condenser is dirty on your Grand Caravan, the simplest solution is to clean it. Before you consider replacing the heater core in your Grand Caravan, it is recommended to flush the existing heater core. 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. Sometimes when a thermostat goes bad, it stays stuck open. Unfortunately, this procedure does not allow you to get into the deeper layers of the filter. So, all of them must be inspected when diagnosing poor airflow. In any case, it is advisable for laypersons to visit a workshop. 18,300 miles. 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 . The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Flushing is done by pushing water through the outlet hose of the heater core and draining the gunk from the inlet hose. Another patient said the AC is just blowing warm air. ChryslerMinivan.net is the best forum for Chrysler Town and Country owners to discuss mileage, price, problems, towing and more. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not RB The Mechanic 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. The air flow from the vents is choppy and not smooth. Mine is 2011 and has turn knobs for fan & temp. Jun 14, 2017. Since the heater core is usually slightly higher, the air will accumulate in there first. "AC unit" - what does that mean? Blend door actuator plays a role in controlling the temperature inside your Grand Caravan. The most common causes for AC not cooling properly in Dodge Grand Caravan are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay. This can have different causes. by Ed Ruelas on January 04, 2016 Heating AC Inspection Cost Service Location SELECT YOUR VEHICLE $94.99 - $114.99 Price range for all vehicles ( 68) If there is a problem with the temperature of the air conditioning system, it could be due to a bad blend door actuator. I have a 2005 . This would require a scan tool to confirm correct operation. It was out of warranty when it went, and the shop wanted <too much, for it to be worth it to me> to repair it (had it in for another issue & asked them to check it.) . The sound is something like a light tapping on the door and it typically happens when you turn on/off the air conditioning system or start the engine. A professional mechanic can swiftly diagnose the heating issue for you. Blend air doors can be a problem. tried different settings, defrost, floor and turn the heat on. If only hot air comes out of the air vents in your Grand Caravan, then the problem probably lies somewhere else. Unless the wiring issue is fixed, the fuse will blow again. Bought brand new in March 2012. The manufacturer was not notified of the failure. nothing. A blown head gasket can cause the exhaust gases from the engine to enter the cooling system and plug the heater core. Eric, Automotive Repair Shop. The worst damage, however, is a failure of the AC compressor when it eats itself due to insufficient lubrication or a production error, metal chips form, which are distributed throughout the Grand Caravans AC system. Rear AC not working Rear AC not working 2016 Dodge Grand Caravan Asked by Visitor in Englewood, CO on September 05, 2021 I had the AC unit replaced when I brought the van however, there is no AC blowing in the rear and my van doesn't have the rear controls, needing to see what is the issue as to why my AC isn't blowing in rear. 166. If the fuse is blown, replace it with a new one with the specified amp rating. The refrigerant pressure is affected by the outside atmospheric temperature. ZIP: #1 Paul Reputation 2,020 #2 tenspeed Reputation 1,510 #3 Dan Ritz Reputation 1,480 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. The Dodge Caravan AC is known for one thing.. The AC light should illuminate and then flash. 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. 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 sound is something like a light tapping on the door and it happens when you turn on the air conditioning system or turn off the engine. It is now 90+ degrees where we live with high humidity. She currently resides in South Florida. However, if you dont turn on the air conditioning on your Grand Caravan for a long time, the parts will stick. Seem to be moving and so forth. Due to the complexity of the replacement job, it is not recommended as a DIY project. The pollen filter, also known as the cabin air filter or microfilter, is responsible for filtering the air that the passengers breathe in Dodge Grand Caravan. Vehicle History's team of automotive experts brings you the most accurate and up-to-date used car information. Therefore it is important to diagnose a failing water pump at early stages to avoid expensive repairs later on. In addition to the vehicle make, model, and engine type, you usually also have to type in the Vehicle Identification Number (VIN). A low refrigerant level in your Grand Caravan does not necessarily mean there is a leak. The most common causes for blower motor not working in Dodge Grand Caravan are blown fuse, bad relay, resistor or control module malfunction, and faulty blower motor. Heat stops working intermittently on really cold days, the only way to fix it is to turn the car off and restart, or switch the temp controls over to . exactly issue im not sure why people mentioned the filter or a door not closing those 2 has nothing to do with a fan not working !! A professional mechanic can swiftly diagnose the poor AC cooling issue for you. The most common symptom of a faulty blend door actuator in Dodge Grand Caravan is a slight clicking sound (or other unusual noise) repeatedly coming from under the dashboard. If you have front AC that is working fine then the rear should also work if the blower is working. Once you start the car back up the A/C will still be off. 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. 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. The OBDII connector is usually located under the dashboard. The rear HVAC housing has electric stepper motors driving the temperature blend door (cool/warm) and the air mode door (side/headliner vents). The wiring harness itself can go bad. Rear blower will not turn on. We research hundreds of models each Did you ever come across a Problem like this? Remove the blower fan in a Dodge Caravan by first disconnecting the battery, then waiting two minutes to disable the airbags. It is also cryogenic and can cause severe frostbite when it comes in contact with the skin. 2014 caravan. Did you ever fix it my van has the same problem but all my blend doors ect.. Therefore it is recommended to do this at a workshop. 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. Next You will need to press the highest and lowest buttons on the AC control panel until the AC light begins to flash. Connect the pressure gauge to the low pressure (L) port in Grand Caravan. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your Grand Caravan. 5th Generation Chrysler Minivans: 2008-2020, 4th Generation Chrysler Minivans: 2001-2007, 3rd Generation Chrysler Minivans: 1996-2000, 2nd Generation Chrysler Minivans: 1991-1995. The blower motor is the central component of the air conditioning system in Grand Caravan, responsible for blowing cold air through the AC vents. 2000 Grand Caravan - drivers side heat not working - Passenger and rear are fine 2 Answers. The inside of the vehicle is developing a bad moldy smell. If fans arent coming on, you should have engine overheating issues. Air should blow out of the vents at different intervals during the reset. There is only one compressor so the freon must travel to the rear evaporator. The top button controls the rear wiper on constant and the bottom button controls the rear wiper washer fluid. Most modern vehicles use R-134a refrigerant, but newer vehicles are increasingly using R-1234yf as a more environmentally friendly replacement. Thanks for your support! 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. Due to the complexity of the replacement job, it is not recommended as a DIY project. I have air in front of the van but my back is only blowing out hot air. Aug 25, 2008 2003 Dodge Caravan helpful Flashing lights! In the event of a defect, the mechanic can directly initiate the repair. Due to factors beyond the control of RB The Mechanic, it cannot guarantee against unauthorized modifications of this information. In rare cases, a fault in the climate control unit can cause the heater to stop functioning. could the drain be plug and the evaporator is freezing up? In order to find leaks in the air conditioning system, a leak search is carried out in the workshop using forming gas even the smallest leaks can be detected. The vehicle was not repaired. The most common reasons a Dodge Caravan ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. If you drive your vehicle in dusty or polluted environment, the filter can get dirty much sooner than manufacturers recommendation. By filling and properly bleeding the system the heat should come back. Since the heating system in Grand Caravan relies on the hot coolant from the engine to heat the interior, the heater will blow cold air until the engine reaches its normal operating temperature. If Your climate control is not working properly in Your Dodge Caravan then You may want to reset it. 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 may need recharging after every few years. Do you still sweat while driving your Dodge Grand Caravan? 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. Blend door actuator plays a role in controlling the air flow and temperature inside your Grand Caravan. A knocking noise from behind the dashboard could be an indicator of a bad blend door actuator in your Grand Caravan. Insert the key into the ignition and turn to the "On" position. 2019. Water pumps usually last for more than 100,000 miles, but they can fail at any time. 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. 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. 2023 Vehicle History Inc. All Rights Reserved. Over last two years the front dash vents gradually lost all read more Chris Shop Foreman 8,839 satisfied customers 2001 dodge grand caravan sport: expansion valves..ac compressor..kick In such a case, almost the entire air conditioning system has to be replaced. As a rule, there is no avoiding a change if the filter is dirty. In the AC settings, find the three leftmost buttons. Home Troubleshooting Dodge Grand Caravan AC not cooling causes and diagnosis. When a blower motor goes bad, it usually makes unusual noises when in operation, and the passengers may feel reduced airflow from the air vents. Clearing the air from the heater core will not help until the head gasket has been replaced. Once the leak has been found, this must be closed again by replacing the respective component. To begin troubleshooting, you must first connect the diagnostic tool to your Grand Caravan. Release the buttons once you see the light flash. 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. The dryer is often overlooked. This information is typically located under the hood and/or in the owners manual. The most common causes for AC not cooling properly in Dodge Grand Caravan are low or overcharged refrigerant, compressor malfunction, clogged cabin air filter, dirty condenser or evaporator coils, dirty or sluggish blower motor, and bad fuse or relay.