Why is the radiator not working on my Jeep Liberty?
If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your Liberty is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.
Why is the radiator fan not working on my Jeep Grand Cherokee?
Remove a known good relay and swap it with the radiator fan relay. Operate the vehicle and check the operation of the unit replaced. If the unit works with the fan relay it proves that the relay is not the problem. Test the relay using jumper wires and a voltmeter.
What makes the radiator fan turn on or off?
A radiator temperature-sensing switch activates the fan relay at 198 degrees F turns the fan on and controls its operation. Make sure the key is off. Switching relays is the fastest way to check for a bad relay when possible.
What does it mean if your Radiator is not working?
If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed.
If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your Liberty is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.
If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed.
Why are the cooling fans not working on my car?
1. Engine running hot 2. Cooling fans do not function 3. Cooling fans stay on at all times Average rating from 129,472 customers who received a Vehicle Engine Cooling Inspection. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool.
What to do if your liberty has a bad temp sensor?
Your engine temperature sensor is responsible for relaying your engine temp to the ECU. Once the temp gets so hot, the ECU commands the radiator fan to come on. If your Liberty has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor.
Where is the relay on a radiator fan?
The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.
Your engine temperature sensor is responsible for relaying your engine temp to the ECU. Once the temp gets so hot, the ECU commands the radiator fan to come on. If your Liberty has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor.
When does the radiator fan turn on in a jeep?
The radiator fan only turns on once the temperature reaches a certain temperature I believe its about half. But on highway speeds it should run very cool. Your electric fan WILL turn on with your A/C switched on, I was 100% certain it did BEFORE I went out to test it simply so I could say I tested it.
Why is my Jeep Grand Cherokee fan not working?
If the fan comes on you know the fault is before, if the fan doesnt come on you know its after, in that circuit or the fan itself. 2005 Jeep Grand Cherokee – Under the knife getting a complete overhaul. So It ended up being the fan motor.
The radiator fan only turns on once the temperature reaches a certain temperature I believe its about half. But on highway speeds it should run very cool. Your electric fan WILL turn on with your A/C switched on, I was 100% certain it did BEFORE I went out to test it simply so I could say I tested it.
Why does the radiator fan not come on when the AC is on?
In order for the AC Condensor to do its job it must stay as cool as it can. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem.
How to troubleshoot the air conditioning on a Jeep Liberty?
Unscrew the blue valve cap and screw on the air conditioning pressure gauge. Turn the knob on the pressure gauge counterclockwise to allow pressure into the gauge. Check the gauge reading. Your AC pressure gauge should be color coded.
In order for the AC Condensor to do its job it must stay as cool as it can. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem.
Unscrew the blue valve cap and screw on the air conditioning pressure gauge. Turn the knob on the pressure gauge counterclockwise to allow pressure into the gauge. Check the gauge reading. Your AC pressure gauge should be color coded.
If the fan comes on you know the fault is before, if the fan doesnt come on you know its after, in that circuit or the fan itself. 2005 Jeep Grand Cherokee – Under the knife getting a complete overhaul. So It ended up being the fan motor.
If your Grand Cherokee has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor. Depending on the model year and engine, the location varies. If it does end up being this sensor, they are very affordable.
What to do if your radiator fan is not working?
No the AC will turn the radiator fan on to pull air across the condensor. Your going to need to check for power at the fan, the fan can still be failed and spin just fine by hand, considering you dont have high or low I would lean towards a fan or fan connector concern.
Why is the radiator not working on my Honda CRV?
If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your CR-V is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.
How can I tell if my Chevy Aveo radiator fan is bad?
You can test the voltage going from the fan relay to the fan itself. If it is getting 12+ volts, the fan should be coming on. But if it’s not, which means the fan has gone bad. This video from Ratchets and Wrenches is a phenomenal resource on how to properly diagnose a wiring problem.
Why is the air blower on my Jeep not working?
I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure). Depending on the length of the trip, it may come back on again. I replaced the blower motor resistor and I thought that fixed the problem, but unfortunately it did not.
Why are the vents on my Jeep not working?
This is typical of a vacuum leak or failure of the vacuum check valve. When you ascend the hill, you loose vacuum from the engine and the A/C vacuum controls loose suction so the vents can’t remain open. Most systems then default to defrost vents.
Where is the air conditioning line on a Jeep Liberty?
The air conditioning lines will be steel lines running on the left side of the engine bay. The low pressure line on your Liberty is marked with a blue valve cap on the line. Unscrew the blue valve cap and screw on the air conditioning pressure gauge. Turn the knob on the pressure gauge counterclockwise to allow pressure into the gauge.
Why is my 2004 Jeep Liberty overheating?
2004 Jeep Liberty Overheating: After About 10 to 15 Minutes of After about 10 to 15 minutes of driving, my vehicle starts to overheat. So far I have replaced the reservoir cap and thermostat, but the problem still persists. I don’t see any coolant leaking anywhere and the fan is working.
What kind of coolant does a Jeep Liberty use?
Water pump: Pumps coolant through the cooling system (when the thermostat opens) creates flow and is always pumping or cycling coolant. Heat exchangers or more commonly radiator or heater core: These give off heat to the air that goes through the radiator or heater core. Coolant: a 50/50 mix of coolant and water is required.
If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Unless the wiring issue is fixed, the fuse will blow again. The wiring harness itself can go bad. Your author has personally had a shredded tire completely pull the fan wiring out of his vehicle. It can happen.
Why is the radiator fan not working on my Jeep Liberty?
There are many reasons why your Jeep Liberty’s radiator fan is not working. Of all the ones listed above, start with the coolant level, then check the fuse. After that, the order isn’t so important. But, you don’t want to miss the easy fixes before you start testing wiring.
What are common reasons my Jeep Liberty has heater problems?
What are common reasons my Jeep Liberty has heater problems? While there are a variety of reasons your Jeep Liberty heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
Water pump: Pumps coolant through the cooling system (when the thermostat opens) creates flow and is always pumping or cycling coolant. Heat exchangers or more commonly radiator or heater core: These give off heat to the air that goes through the radiator or heater core. Coolant: a 50/50 mix of coolant and water is required.
What does it mean when your radiator fan is not working?
This is what we call a blown fuse. A blown fuse is no big deal, and changing one does not cost a lot of money. If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan.
How many relays are in a Jeep Liberty?
Engine Compartment Fuse Box Diagram № A Protected Component 1 40 Blower Motor Relay 2 30 Radiator Fan (High Speed) Relay, Radiato 2 40 Radiator Fan (High Speed) Relay, Radiato 3 50 Park Lamp Relay, Daytime Running Lamp, H
Where are the fuses located in a Jeep Liberty?
The electrical power distribution center is located in the engine compartment near the battery. This power center houses plug-in “Cartridge” fuses that replace in-line fusible links.
If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Unless the wiring issue is fixed, the fuse will blow again. The wiring harness itself can go bad. Your author has personally had a shredded tire completely pull the fan wiring out of his vehicle. It can happen.
Where are the fuses on a Jeep Liberty?
Cigar lighter / power outlet fuses in the Jeep Liberty are the fuses #3 (Cigar Lighter) and #16 (Rear Power Outlet) in the Instrument panel fuse box.
What to do if your radiator cooling fan Wont Stop Running?
Remove the lid. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.
Why is my computer cooling fan not working?
A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor. The relay, however, has direct power to one side, the same as a light switch.
The electrical power distribution center is located in the engine compartment near the battery. This power center houses plug-in “Cartridge” fuses that replace in-line fusible links.
Why is the a / C clutch on my Jeep not working?
I removed the A/C clutch relay and tried using a jumper wire to engage the clutch/compressor but with the 5 prongs on the relay I wasnt sure which ones to jump together. I tried different combinations with a jumper wire but nothing worked and the compressor clutch is still not engaging. Anyone have any ideas? I’m stooped
How does a fan clutch work on a radiator?
A thermal fan clutch reacts to temperature of the air rushing over it from the radiator. As the radiator heats up, the air passing through it also heats up. This heats up a small bi-metallic coil in the face of the fan clutch, releasing an internal valve.
I removed the A/C clutch relay and tried using a jumper wire to engage the clutch/compressor but with the 5 prongs on the relay I wasnt sure which ones to jump together. I tried different combinations with a jumper wire but nothing worked and the compressor clutch is still not engaging. Anyone have any ideas? I’m stooped
Why does my AC compressor clutch not engage?
Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways.
Why is the a / C compressor not engaging in my Jeep?
I can easily turn the compressor by hand so it doesn’t seem to be seized. I removed the A/C clutch relay and tried using a jumper wire to engage the clutch/compressor but with the 5 prongs on the relay I wasnt sure which ones to jump together.
Remove the lid. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.
What are the symptoms of a bad cooling fan relay?
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
You can test the voltage going from the fan relay to the fan itself. If it is getting 12+ volts, the fan should be coming on. But if it’s not, which means the fan has gone bad. This video from Ratchets and Wrenches is a phenomenal resource on how to properly diagnose a wiring problem.
How can I tell if my radiator fan is working?
When a radiator fan works it usually makes a whirring sound that is easily noticeable. However, the radiator fan does not always start spinning on ignition. The ECU signals the radiator fan to work at the precise time. So, do not worry if the fan doesn’t immediately start working. Visually check the fan if you don’t hear its noise. 1. Broken Fuse
The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.
Why is the fan not working on my Jeep Grand Cherokee?
The fan wiring is some of the more vulnerable wiring in your Grand Cherokee. You can test the voltage going from the fan relay to the fan itself. If it is getting 12+ volts, the fan should be coming on. But if it’s not, which means the fan has gone bad.
What does it mean if your Jeep Wrangler radiator is not working?
Your Jeep Wrangler ‘s radiator fan has one of the most important jobs on the vehicle. It is the last line of defense between you and an overheating engine. If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed.
How do you replace a cooling fan on a Jeep Grand Cherokee?
Pull the cover from the fuse box on the end of the panel. Using the fuse diagram on the inside of the cover, locate the fuse for the cooling fan and remove it with needle-nose pliers. If the metal link inside the fuse is broken, replace the fuse.
Where is the radiator fan relay on a 2008 Jeep Patriot?
On my 2008, there is a relay box under the battery tray on the inside fender. You should be able to reach it. There are fan relays in there. I just experienced a problem where my radiator fans ran even with the car off and when I came out in the morning, the fans were running and my battery was dead.
Why does my Jeep Grand Cherokee Fan quit working?
In this one we take a stab at permanently fixing a common issue with the 1999-2004 Jeep Grand Cherokee. The electric cooling fan will quit working, and your jeep will overheat, due to a failure in the electronic fan control relay. This is a heat related failure and I add a large heat sink and relocate the relay to try and avoid further issues.