Why is the radiator not working on my VW Jetta?
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 Jetta is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.
When did the VW Jetta cooling fan die?
The contact stated on 8-16-05 while driving on the highway the car died. Then it lurched forward, stopped and lurched forward again. This was the fifth time the car has been at the dealers. The first time the check engine light came on, and they replaced a fuel injector.
When did the Jetta air conditioner stop working?
I bought my brand new 2009 Jetta tdi on 5/28/2009 and 2 days later after I had only driven the car for 200 miles, the air conditioning stopped working when the car was sitting still. I opened the hood after I got to my destination to realize that the cooling fans were not working at all. They would not even come on to cool the engine.
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 Jetta’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.
How does the radiator fan work in a Volkswagen?
When the Radiator fan is running, they suck in to close the Shroud off and only allow air to pull from infront or from the grille. When the radiator fan is off, they are allowed to free open, so that the radiator has air flow across the width of the core.
Why are both radiator fans running at the same time?
In prepping for a 2K trip next week, there couple of quibbles I need to address. Both cooling fans run constantly. The AC is off. Engine cold, start up, and they both run continuously. Key off, and they both stop.
Why does my VW Jetta fan keep running?
The fan can run after the engine shuts off, but I’ve read about failures where the fan keeps running until the battery is dead. A sticking relay or switch, can jar itself loose while driving. But if it sticks once, it will likely do it again. You might not have given it enough time to shut off,…. on the other hand, keep an eye on it.
When does the engine cooling fan turn off?
If the fan switches off by itself after about 10 minutes, it is working properly. MK4 (1999-2004.5) VWs have an after run feature to cool the engine after shut down if the coolant temperature is too high. 35 people found this helpful. You have been quite helpful… and I thank you for the time you spent in answering my question…
Where are the fuses on a radiator fan?
Have you checked the fuses in the black box on top of the battery. Those steel like fuses. Fuse 16 on the side of the dashboard. When opening the cover it will be the 2nd fuse from the top left. https://knigaproavto.ru/shemy/en/volkswa…
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.
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.
Why is my a / C not working on my Jetta?
This includes 98-10 Beetle, 99-06Golf, 99-05 GTI/GLI/Jetta/Bora. The fuse as shown in the picture normally does NOT fail but the fuse box under it does. It melts and this particular part sends power to the cooling fan thermal switch AND the Fan control module. The fan module also sends power to the a/c compressor.
What to do if your a / C fan is not working?
The a/c button turns the fans on LOW only, and the fans will still work on high if the engine temperature gets too hot, above 107C actually, or 224F. The only way to fix this is to replace the defective fan.
Why are the fans on my car not working?
It melts and this particular part sends power to the cooling fan thermal switch AND the Fan control module. The fan module also sends power to the a/c compressor. So pretty much the fans don’t work and your a/c blows warm. Check this first before checking other areas.
How can I tell if my VW Jetta fan is shut off?
Tap on it with a screwdriver handle, and see if the fan shuts off. http://d3nevzfk7ii3be.cloudfront.net/igi/XbD1JcNwbHgRnN4b.standard 106 people found this helpful. If you found the fan module under the hood, and the fan shut off when you tapped on the module, you will need a new module.
Why are the fans on my radiator not working?
If not, the low speed aspect is burned out…..Or, the brushes are shot. You can unplug each fan and test to see if brushes or the low speed is the culprit. Each plug has three connections.
Why is my radiator not working when the AC is on?
I checked it while it is on cold state, but then when turn the AC ON the Radiator Fan turn on, so I let the AC ON while i drive my car, after 30mins driving if i turn the AC OFF, the RADIATOR FAN still dont work, even the Radiator Temp was hot. The coolant temp has to be hot for the fan to come on.
Do you turn the radiator fan on or off?
The coolant temp has to be hot for the fan to come on. Yes, the fan will come on when you turn the A/C on, so that proves the fan works. Leave the A/C off for the rest of the test. Start your vehicle, and let it idle for 10-15 minutes.
Where is the fan relay located on a VW Jetta?
nancy, “The Fan Control Relay is bolted beneath the battery tray. That’s a known failure item when the fans are inoperative. The Fan Control Module is on the lower driver side of the radiator… or it can be located on the driver side lower framerail.”
What happens if you turn off the electric fan on a Jetta?
Electrical Fan continues running after car turned off. Draines battery. Electrical Fan continues running after car turned off. Draines battery. on Volkswagen Jetta Good news! We found 31 RepairPal Certified shops near you.
Why does my radiator fan keep running after I Turn Off the car?
Runs for about 30 minutes or till battery is dead. I have a 2007 VW Jetta 2.5 L – radiator fan stays on constantly, even after shutting the car off. Have to disconnect the battery, because there is not a fuse / relay anywhere under the hood or within the inside car panel.
How long does an electrical fan run after turning off the engine?
Electrical fan run for a long time after turning the engine off. It make big noise while turning. it turns off at certain for some seconds and starts to run again and again. for a proximately 5 minutes. I took it for service in March 2014 and reported the issues and was told that they cannot find any fault with it, and I should just drive it.
What happens to the fans when the engine gets too hot?
Both fans always work in tandem. The resistor pack inside the fans will burn out and the fans will stop working on low speed but will still work on high speed when the engine gets too warm. The a/c button turns the fans on LOW only, and the fans will still work on high if the engine temperature gets too hot, above 107C actually, or 224F.
Can a VW Jetta fan run after the engine is shut off?
Definitely hold on to the info. The fan can run after the engine shuts off, but I’ve read about failures where the fan keeps running until the battery is dead. A sticking relay or switch, can jar itself loose while driving. But if it sticks once, it will likely do it again.
When does a car cooling fan turn off?
Fan goes on the moment I start car even if Temp is 0 and remains on whilst driving. When switching car off it remains on for a few mins +- 5mins and then goes off. If I leave ignition on the fan continues running.
Why is my radiator fan not turning on?
Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. Here are the most common reasons that your radiator fan does not turn on: Before poking your hands around your fan, make sure to treat it like it still could come on, and and keep your hands out of its path.
Why are my radiator fans not coming on?
If your radiator fans don’t come on at all, it is usually one of two things. First, check the fuse box on top of the battery for any signs of melting. If you don’t see anything melted, turn the a/c on and then wiggle the big green fuse on the left. If you don’t get any results from that, the next likely culprit is the pressure sensor.
Where is the fuse box located on a Volkswagen Jetta?
Year of production: 2003, 2004, 2005, 2006, 2007, 2008, 2009 Engine compartment fuse box Relay carrier on onboard supply control unit (left under dash panel) The instrument panel fuse panel Additional relay carrier, under box in engine compartment
Why is there no power to the a / C compressor?
Potential Causes: A/C Compressor, A/C Pressure Sensor F129, A/C Switch, Ambient Temperature Switch F38, Battery Auxiliary Fuse Box, Fan Control Module J293 (and Wiring), Fuse or Lost Throttle Basic Settings Test the Fan Control (FCM) module inputs as follows: 1.
Where is the fan control module on a VW?
The fan control module is located under the radiator and has two connectors: a 14-pin (T14) and a 4-pin (T4). 2. Check for 12 volts to pin T4a/1 (red/black) and T4a/3 (red) via fuses S164 and S180 respectively, in the fuse box on top of the battery, at all times.
What’s the duty cycle on a Volkswagen a / C compressor?
3. Verify an approximate 70% duty cycle from the A/C pressure sensor at pin T14/2 (white) with the ignition on and the compressor not running (duty cycle will decrease as the high-side pressure increases).
Why are the Bentley radiator fans not working?
I checked the fan circuits as per the Bentley manual today, When I jumper the terminals at the thermo switch on the radiator the fans come on, but only high speed. They won’t work on low speed. I turned the AC on with the fans on hoping it would be cool but it still won’t cool.
Is there a way to test a radiator fan?
You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.
Are there any problems with the Volkswagen Jetta?
Volkswagen Jetta owners have reported 16 problems related to cooling fan (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Volkswagen Jetta based on all problems reported for the Jetta.
What to do if your VW Golf has no AC?
If you turn the key and turn on AC, both radiator fans should come on. If not, AC compressor will not engage, and most likely one fan is dead. Replaced with $40 for both off ebay… And I have AC. Loading…
Why does my VW Mk4 AC compressor not kick on?
Common problem for VW mk4 AC compressor to not kick on… Dead radiator fans. If you turn the key and turn on AC, both radiator fans should come on. If not, AC compressor will not engage, and most likely one fan is dead. Replaced with $40 for both off ebay… And I have AC. Loading…
What are the injectors on a VW Jetta?
– Injectors (up to May 2005) WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
What is the relay code for a VW Jetta?
Relay code number 100 is replaced by relay code number 370 depending on production. N… – Ignition coils 1-4 with output stage (up to May 2005) N… – Ignition coils 1-4 with output stage (up to May 2005) N… – Injectors cylinders 1-4 (up to May 2005) N… – Injectors (up to May 2005)
Why is my VW Jetta cooling fan making noise?
A defective cooling fan assembly making noise dealer notified and replaced unit at consumer’s cost. Manufacturer notified, and informed consumer that part was not cover due to it being out of warranty. All professionals we have spoken with say these parts should not have failed at such low milage.
Is the 2.5L Jetta engine a problem?
The Volkswagen 2.5l engine is not very problematic, but does have a few issues. Today Paul from ShopDAP.com and I answer the question about the common issues on 2.5 Golf, Jetta, Beetle, and SportWagen Subscribe to ShopDAP.com ~ https://www.youtube.com/user/Deutsche… https://www.youtube.com/playlist?list…
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.
What to do if your Jetta won’t start?
If it’s cold and you have a 2009-2012 Jetta CLICK HERE for information. This is by no means a comprehensive list of problems, just some of the most common. Use common sense when doing any testing and be sure that you won’t get run over if the car suddenly and unexpectedly springs to life.
What to do if your Jetta fuel pump goes out?
Matthew Wright has been a freelance writer and editor for over 10 years and an automotive repair professional for three decades specializing in European vintage vehicles. Use this diagram to determine which fuse to replace if your brake lights or fuel pump go out in your 1999 or newer Volkswagen Jetta or Golf.
Where is the fan control module on a Jetta?
All tests are performed with the ignition key and A/C switched on and the connecters connected to the fan module. The fan control module is located under the radiator and has two connectors: a 14-pin and a 4-pin. 2.
What kind of climate control does a Jetta use?
Manual climate control. Vehicle Applications: 2000 Volkswagen Beetle 2.0L, GAS, Eng Des AEG; 2000 Volkswagen Jetta GL 2.0L; and 2003 Volkswagen Jetta GLS 2.0L, Eng Cfg L4, Eng Des AVH 1. All tests are performed with the ignition key and A/C switched on and the connecters connected to the fan module.
Where is the fuse box on a Volkswagen Jetta 6?
Volkswagen Jetta 6 (2011 – 2016) – fuse box diagram. Posted on 28 May 201928 May 2019 by. Year of production: 2011, 2012, 2013, 2014, 2015, 2016. The under-hood fuse box is located in the engine compartment on the driver’s side.
What is the rating of a Jetta fuse?
The lists below indicate which device each fuse protects, the amperage needed, and the color corresponding to each amperage rating: Comfort System, Cruise Control, Climatronic, A/C, Heated Seat Control Modules: 7.5A
How do you remove a Jetta air conditioner?
Remove the radiator mounting bolts and slide the radiator and fan by sliding them downward. Don’t disconnect any refrigerant lines, if your Jetta has an air conditioning unit. Take the retaining clamps off the refrigerant lines and remove the bolts securing the refrigerant line from the side of the radiator.
Why does my radiator have a blown head gasket?
Community Answer. Most likely, the head gasket is allowing the pressure from the pistons/cylinder to leak through the water galleys, and cause bubbles or pressure in the radiator. This is a classic sign of a blown head gasket.
Where is the head gasket on a V-type engine?
There are 6 references cited in this article, which can be found at the bottom of the page. The head gasket is found between the engine block and the cylinder head or heads in a V-type engine. The gasket functions as a seal that prevents the combustion process from leaking into the coolant passages that surround each cylinder.