Testing a Mk1 VW Coolant Fan Switch
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- Опубліковано 23 чер 2022
- The Cabby started running hot and I noticed that the cooling fan was not running. In this video I quickly demonstrate how to isolate and test if the cooling fan switch is to blame. This style switch is used on many water-cooled Volkswagens.
#cabriolet #vw #mk1 #mk2 #golf #gti #jetta - Авто та транспорт
Very well done. You even said which size wrench/socket. I appreciate the video.
Thank you!
Great video for sure, I like that jumper trick with the fan. Don’t forget to put the gasket on that switch or it will leak.
Good tip!
@@ShinyFastLoud Absolutely 👍
got stuck in traffic and the steam started popping out and im damn sure the fan didnt kick in to cool it down. This will help thanks
hope it helps
Sir, Having same issue overheating fan not kicking in change the fan switch still bo fan kicking in.. any advise please
Good job.
Thank you
This was great, exactly the same symptoms, same results with the test. However when I replaced with a new temp switch still not kicking in. Could it be something else?
Possibly an issue with the cooling fan relays.
Models with ac should require the key to be on for the high speed fan to work using the jumper wire test....and a good fan relay...if I understood the vw mechanic correctly in the video I watched before this one.
Also, turning on the ac should make the fan come on regardless of engine temperature. If it doesn't it may be a relay problem. That also makes me wonder if the ac compressor's electro magnetic coil could be part of the fan's circuitry.
A faulty ac clutch coil could be something to check into.
Sometimes when the ac compressor fails and seizes up, unplugging the coil will allow the pulley to spin freely. Not a big deal unless the fan circuitry is relying on that connection too.
@@LarryMorrow2 thank you so much Larry, turned out to be a poor ground in the end
@@ollieguyon glad you got it figured out.
Yesterday I learned there is a pressure switch on the ac drier, and if the refrigerant pressure is too low, it won't allow the electro magnet to engage the ac compressor, which will prevent the fans from activating when the ac is button is pressed because there will be two places where that circuit is open.
If anyone reading this wants to test their system by using a jumper wire to bypass their pressure switch, they should also use a jumper wire to bypass the ac compressor coil because the compressor's oil is mixed with the refrigerant, and engaging it without oil will seize the compressor and burn the belt.
great info
Hi is it possible that this same switch come with differt polarities.
not sure
hello, I would like to know if you can help me by telling me the model and code of the air conditioning motor, I have a vw golf mk1 1986 cabriolet and I do not have references to the installation and component model, Thanks in advance
I will this weekend
@@ShinyFastLoud thanks, i speake spanish, sorry for my english
just replaced it on mine, srill not kicking on
I have the same switch plug, when i jump mine only my low speed works :( any advice?
Did you figure out what’s wrong my does the same thing
Looks like u need a coolant flush
Good point