Why is the radiator fan not working on my Jeep Wrangler?
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 Wrangler is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. There are a few simple reasons that the fan would not be cycling on.
What does code p0480 mean on Jeep radiator fan?
Include a few extra bits of circuitry (more relays) that help trigger the fan on when the AC is running, or the engine temp crosses a certain level. In addition to throwing a P0480, these fans can also throw a code in the P069X range.
What was the problem with my Jeep Wrangler JK Unlimited?
Recently, I was driving my 2015 Jeep Wrangler JK Unlimited through a parking lot on a 95 degree day, and after leaving a stop sign, a check engine light flashed on (later I would learn it was a P0480 Cooling Fan Relay 1 Control Circuit ), and shortly thereafter my Jeep overheated.
What to do if your radiator fan is not working?
The first thing that you would want to do is locate the fuse for your Wrangler’s radiator fan and make sure that it hasn’t blown. 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.
What causes a Jeep Wrangler to overheat at idle?
When your Jeep overheats only at idle, in most cases it is the Radiator Fan Clutch that has gone bad. Overheating during idle means the fan is not pulling sufficient air through the radiator to maintain the engine operating temperature. Components that can cause your jeep Wrangler to overheat.
What should the thermostat be on a Jeep Wrangler?
The job of the thermostat is to monitor the engine temperature and engage the fan once it exceeds operating temperature. The Jeep Wrangler 4.0 has a cooling system that requires a 195 degree thermostat. Anything lower than that can trigger the CHECK ENGINE light. It should activate automatically as the engine temperature fluctuates.
How do you fill a radiator in a Jeep Wrangler?
Connect coolant fill funnel using adapter for radiator cap 20. Start filling radiator with coolant mix until coolant comes out of the metal heater lines 21. Feed coolant into one of the heater core hoses until it come out the other; this fills the heater core. 22.
Is there a problem with my Jeep Wrangler JK radiator fan?
2007 – 2011 Jeep Wrangler JK Radiator Fan Problem Solved!!! If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.
When your Jeep overheats only at idle, in most cases it is the Radiator Fan Clutch that has gone bad. Overheating during idle means the fan is not pulling sufficient air through the radiator to maintain the engine operating temperature. Components that can cause your jeep Wrangler to overheat.
The job of the thermostat is to monitor the engine temperature and engage the fan once it exceeds operating temperature. The Jeep Wrangler 4.0 has a cooling system that requires a 195 degree thermostat. Anything lower than that can trigger the CHECK ENGINE light. It should activate automatically as the engine temperature fluctuates.
Connect coolant fill funnel using adapter for radiator cap 20. Start filling radiator with coolant mix until coolant comes out of the metal heater lines 21. Feed coolant into one of the heater core hoses until it come out the other; this fills the heater core. 22.
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.
Why does my Jetta not have a cooling fan?
Simply the engine is not hot enough to turn on the cooling fan, its not hot enough outside, you are driving getting plenty of air flow through the grille to keep things cool without the assistance of the fan. Its possible that you have no problem at all. Was this answer helpful? I got a 2002 Jetta the cooling fans don’t turn on .
How does a radiator fan work when the AC is on?
The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. At higher coolant temperatures, the switch closes to start the cooling fans. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range.
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 Wrangler is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. There are a few simple reasons that the fan would not be cycling on.
The first thing that you would want to do is locate the fuse for your Wrangler’s radiator fan and make sure that it hasn’t blown. 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.
Can a push FAN be installed in front of a radiator?
Another thing that could be done is a small push fan can be installed in front of the radiator, with a switch for manual control. That would not alter the electrical system in any way, and might be worth considering if your temps are too high. Final thoughts, is make sure the cooling system is properly bled.
Where does the radiator fan go when its hot?
Having said that Matt, as I already suggested, when its hot out I run right at the middle hash mark, when its cool I run just mm or 2 below, with a known fully functional fan. It has done this for the 1.5 years I have had it, first noticed while I was towing and it freaked me out for a second but it has NEVER gone above the 1/2 hash mark.
What should I do if my Jeep Wrangler blower is not working?
Jerry – You had mentioned that if the blower fan simply didn’t work at all you should look into replacing the switch plug. I have replaced the switch and the resistor and still no fan. Both of the fuses (behind the glove box and under the hood) appear to be working. Where can I find the blower fan to test it? Newbie Jeep owner here – 2000 TJ w/2.5.
Why is my Jeep Wrangler not running hot?
Like the blower motor itself, the resistor is not a safety risk to other components, but it definitely makes things uncomfortable until a replacement is installed. Not having enough engine coolant (antifreeze) is something that will make your engine run hotter. Ironically, it also will prevent your vehicle from generating enough heat.
How does the heater work on a Jeep Wrangler?
When your Jeep reaches its optimal temperature, its thermostat opens and allows that coolant from the cooling system to flow through the engine, removing heat and sending it into the radiator, then into the heater core which, ultimately, distributes it into the Jeep.
Why is my Jeep Wrangler fan not working?
Recently the fan on my 2001 TJ stopped. It does not work on any speed or on heat or A/C. I pulled the blower motor and straight wired it to the battery. It worked. I also pulled the speed selector switch. I ohm the switch. It appeared to be ok.
What happens when your Jeep Wrangler heater stops working?
At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Wrangler, this process has failed in one way or another.
Why does my Jeep Wrangler have no coolant?
However, even if there is no coolant smell, but an issue with the heater, it is a good idea to check these hoses for heat. If the engine is warm, then you should feel heat from the hoses as well. If not, then the coolant is not circulating properly and you could have air in the lines or a clogged heater core that needs a flush.
Where does the heat come from in a Jeep Wrangler?
And it comes, basically, from heat generated by the engine. When your Jeep reaches its optimal temperature, its thermostat opens and allows that coolant from the cooling system to flow through the engine, removing heat and sending it into the radiator, then into the heater core which, ultimately, distributes it into the Jeep.