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 Golf 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.
Full Answer
Why is my blower motor on my VW Golf not working?
Bad blower motor If there is no air flow or reduced air flow from the vents on your VW Golf, bad blower motor could be the culprit. A worn out or weakened blower motor can also produce abnormal sounds when in operation. You cannot repair a broken blower motor, the part must be replaced with a new one.
Why is my AC not working on my VW Golf?
Dirty evaporator can also be the reason for AC problems on your VW Golf. Cabin air filter captures most of the dirt or other airborne particles, but some escape and fall on to the evaporator. Over time, these dust particles can builds up on the fins and block the air flow through the evaporator, resulting in poor cooling.
How to stop the engine fan from running after short trips?
In the past few days the engine fan continues to run after only short trips (3 miles). The only way to shut it off is to start the engine and then turn it off. This happens after each trip. Today I decided to let the fan run while I put away groceries (about 5 minutes).
How do I Turn Off the fan in my car?
The only way to shut it off is to start the engine and then turn it off. This happens after each trip. Today I decided to let the fan run while I put away groceries (about 5 minutes). I Checked and the fan was still running. I stopped by starting the engine and then turning it off. I checked under the hood and everything looked normal.
Why is my cooling fan coming on?
Engines operate at their most efficient when they're hot but not too hot. The fan turns on when you've stopped driving because no more cooling air is flowing into the engine bay. This causes the temperature to rise, automatically triggering the fan.
Why does my fan keep running when my car is off?
It's normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool. However, if the fan is running for an extended period, the fan itself can become damaged due to overuse.
Why does my TDI fan keep running?
Rest assured—this is in fact normal operation. The after-running of the cooling fans is deliberate and can sometimes last up to 16 minutes after switching the engine off. The after-running process prevents excessive engine compartment temperatures caused by the diesel particulate filter regeneration cycle.
Why is my engine fan always on?
Your car radiator fan still running when the car is off is likely due to a broken or faulty fan relay. Other common reasons for the problem include a faulty chip in the electronic control unit (ECU) and a failing coolant temperature sensor (CTS).
Why is my engine cooling fan so loud?
Worn bearings, bent or broken blades, and unbalanced rotating assemblies can cause a fan to screech, howl, or otherwise make noises it shouldn't. Fortunately, switching out a worn fan for a new one isn't a huge ordeal.
Will a fan drain a car battery?
This is a question that many people have when their car battery dies and they are left with a dead fan. The answer to this question is that it depends on the car battery and the fan. Some car batteries can die in as little as an hour if the fan is left on, while others may last for several hours.
What happens if your radiator fan stops working?
What happens if the cooling fan stops working? If your cooling fan stops working, your engine could overheat. This could cause damage to your engine parts. It's a serious issue and needs to be looked at by a garage.
Does a car radiator fan run all the time?
Radiator fans are temperature controlled. They cut in and out to maintain the engine temperature at the optimum level where maximum efficiency is reached. Usually, the radiator fan will not start up the moment you fire up your engine.
What are the symptoms of a faulty cooling fan switch?
Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.
How do you fix an overheating electric fan?
Electric Fan Overheating – What To Do?Turn the switch off and unplug the electric fan.Wait for a few minutes or when the motor has already cooled down. If there is a visible fire, immediately extinguish it.Disassemble the fan, including the motor cover.Troubleshoot the internal parts.Clean the electric fan.
How can you tell if a fan relay is bad?
Keep a lookout for the following bad cooling fan relay symptoms:The engine runs hot or overheats. ... The cooling fans don't work. ... The cooling fans keep running. ... Warning lights. ... Poor air conditioning performance. ... Swapping Relays. ... Measuring the Relay Coil's Resistance. ... Listening for Noises.More items...•
What are the symptoms of a faulty cooling fan switch?
Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.
Why does my car make noise when off?
If your car makes a metallic clicking sound after you switch off the engine, it's just the sound of the engine cooling down. It's nothing to worry about and will stop of its own accord fairly quickly.
Loud noise or roar from ventilation or fan of your Volkswagen Golf
Listening a air conditioning noise on Volkswagen Golf is never enjoyable, and can make your trips particularly uncomfortable. Ventilation is useful whether it is in winter to warm up or defog or to cool down the car during the summer.
I listen an heater fan noise like a click Volkswagen Golf
We will now take a look at the clicking noises you may listen from your ventilation. A clicking noise from Volkswagen Golf heater fan is often a consequence of a duct or fan blocked by a foreign body. This noise is likely to enhance as the air flow in the circuit increase.
I experience an hissing heater fan noise Volkswagen Golf
Finally, if you recognise a whistling noise in the ventilation of your Volkswagen Golf, it may be that the origin of it is linked to a fan that has shifted or is commencing to dry . In any circumstance, you will need to inspect the fan in question to visually examine its state.
Slamming noise air conditioning Volkswagen Golf
We will now look into the particular part of the air conditioning side of your heater fans and the origins of the noise it can make. A clicking noise in your air conditioning, if it is quick and when you start it only represents a good running of your air conditioning compressor which lights up, this noise can be loud.
Why is my VW Golf not having air conditioning?
The most common causes that hinders normal operation of air conditioning system on your VW Golf 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. 1. Dirty cabin air filter.
Why is my golf air conditioning not working?
A leaking condenser can lead to a loss of refrigerant and reduced cooling performance of the system. In order to find leaks in the air conditioning system, a leak search is carried out in the workshop using forming gas – even ...
What causes a VW Golf to leak refrigerant?
In addition to the normal loss, component defects are usually responsible for the escape of the refrigerant gas on VW Golf. A defective sealing ring, a worn line or a condenser that has been damaged by a stone chip are the most common causes.
What happens if you don't service your golf club?
If you don’t have the system serviced regularly on your Golf, the refrigerant level will eventually get so low that the system loses its cooling capacity. Just have it refilled and you can drive with pleasant temperatures again. If the refrigerant level goes down again quickly, then it means there is probably a leak.
What causes a non-functioning AC system?
If this is the case, the only option is to replace the broken part. 3. Refrigerant Leak. Insufficient amount of refrigerant is still the main cause of a non-functioning AC system.
What causes a VW Golf to be dirty?
1. Dirty cabin air filter. The pollen filter, also known as the cabin filter or microfilter, is a central component of the ventilation system in your VW Golf. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling, heating and air flow.
How to clean a golf condenser?
If the condenser is dirty on your Golf, the simplest solution is to clean it. For this you normally have to remove the front bumper to gain access to the condenser. You can use power washer for cleaning, but make sure that its at low pressure setting, as high pressure can easily damage the delicate fins on the condenser.