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I installed a new clutch but the fan still runs even when the engine is cold. could you tell me the reason? thank you very much

Just came across this video while doing some research on the cooling system on my Mercedes M119 V8. In the process of changing the thermostat amongst a few other components. I learned a lot about the viscous fan and how it operates-great job with the video very informative and fun to watch, you have a great highly energetic and enthusiastic way of speaking that is leaps and bounds better than the majority of monotone speakers on here lol

Where's all the black crud around the injectors?

Very informative. Much appreciated.

Three years later, hah, a question: What's the common cause of the rear door not wanting to lock when locking other doors? I hear what I assume is the actuator doing a thunk-THUNK - one direction then back, I expect - and oftimes I have to go to the back and open a door, manually push the lock flap, shut the door to get it to lock properly. Other times, the rear door locks as it should, there's no consistency to it.

Where’s this 80$ fan clutch !?

Amen brother, im watching this because my fan clutch failed, on my 2012 sprinter 3500...and yes "don't cheap out or you will find out !"

note the speeds of the paper hitting the fans and that tells you something too. Reminds me of the sports cards on a bike!

Thank you broe

how do you test not running yet. Have not finished engine swap. so engine not running... fan not installed??

Super helpful, thanks dude!

Love the videos, keep them coming

If you have fan roar, could that mean you have a bad thermostat?

Is 230 F maximum for an 2005 Winnebago view RV 10.000lb hot ? Going up hill ? Or is just fine because of the weight ? After that it stays on 205 F

thank you. I got an aftermarket clutch thinking it would help and I started getting fan roar. The original was probably fine

So what's the difference in an original T1N fan clutch and a new Mercedes brand fan clutch, just the age, is that what you're referring to when you say no matter what, the original T1N's are bad? thanks

Preventive maintenance at its finest. If we can understand how failing to do these things will damage our components, then we will be in a better position to act on this knowledge and keep our vehicles alive for longer, and healthier along the way.

Two of the telecom / ISP service companies we service replace both fuel filters every oil change, they typically run 7500-8000 miles, all 6.7 PSD Fords, in class 5 bucket trucks. We haven't had a fuel system issue with any, since 2016.

Top advice... Thanks from Scotland

My Mazda BT 50 fan clutch is over 17 years old. Still works well.

Well, this is a good start but often these fans don't lock up when they need to or as completely as they need to. This test does NOT guarantee the clutch is good. Sorry for the bad news. My research suggests you need to check the rpm of the fan when it's running over 200 degrees.

Quick explanation thanks.

Another question involving my hinge: I replaced the hinge but the new one is still actuating at the wrong part first. I have a ladder attached to the outside of that door. Could that be the problem? The top hinge works fine.

Hey! Question: I'm having issues with the black latch mechanism on the driver side door that controls that bar on the inside of the door. It started a few months back and has consistently been an issue. I have to fidget with it to get it to go into full locking mechanism whether the door is shut or open. Any thoughts?

and if you have a sprinter 2011? where is the temperature gauge?

I have a 96 Tacoma with 300,000 miles with viscous fan clutch and the fan is engaged/runs all the time, do I need a new clutch?

That is info for KIDS 😂😂😂

Great information

speak it to us! Looking forward to having ya'll do an eval on my 3500.

Thanks for the useful video, hi from the UK. Did you make the video for how to flip that metal bar in the hinge to restore them? My hinges are just like this, good on he left and bad on the right. I'd love to feel confident drilling that plate out of the hinges and flipping it so would love a video about that!

The clutch engages when that bimetalic strip bends and pushes a pin allowing circulation if viscus silicon that transfers tourque between impeller and turben.

Thank you! The latching pin had loosened and misaligned so that the secondary latching would t happen. Thanks to you, I solved my problem with a crescent a wrench.

What happens if I bore it and lock the fan permanently to the axe? Would this solution destroy the belt?

The paper test. The paper does not impact the speed of the fan at all but I never hear a roar.....

My Audi A4 B5 petrol ADT engine is overcooling after 75 miles per hr. Thermostat is ok, so I am a bit lost. Could the fan be a problem not disengaging if so how can I tell.

that one at 2;03 looks like a non-thermal clutch because it doesn't seem to have the thermal spring at the front. I keep hearing about the ROARRRR!!!!!!!!!!!!!!!!!!! but I havn't heard it yet. Some clutches are quiet I think.

another way to check the fan clutch is WARM THE ENGINE TO OPERATING TEMPERATURE AND THEN TURN IT OFF WHILE OBSERVING THE FAN, AND IF IT SPINS ON AFTER THE ENGINE STOPS; THE FAN CLUTCH IS EITHER BAD OR IT IS THE WRONG FAN-CLUTCH FOR YOUR VEHICLE, the fan should stop with the engine. Some fan-clutches are REVERSED. When buying a new one it is important to get the correct one for your model.

tyfys

brilliant, I really needed to know this! TY

So if it does occasionally hit +235 what do I look into to resolve the issue? I was told I might need to replace the coolant system all together in my 2006 T1N. Is that a probable resolution?

Temp gauge on my 2002 T1N runs higher when going up hills and on hotter days. Tried the paper test to see if its the fan clutch is faulty, it seems strong, the paper didn't slow it down at all, I've not heard the fan clutch kick in, could it be faulty?

You are a sprinter god. Most useful video I've seen on fixing my old sprinter.

So in order to test the clutch the engine must be at operating temp?

Porque uno gira hasia un lado y la otra hasia el otro?

Thanks 😊

04 t1n , fan very hard to move hot/cold, no overheating, no roaring, Is it normal for it to be so tight where you can hardly move blade ?

Hey, awesome video! I am looking for the plastic part on top of the rear door bar, as seen st 6:34 in the video. Do you have any info on the little plastic part or a place I could buy one? Cheers

Helpful video. Thanks. However, I cannot find your armrests anywhere online.

Thank you! Will a bad fan clutch effect my A/C on a hot day?

OMG thank you for this! When i first got my van that needle never moved from 190 ever. that needle has been all over the place in the last two years, but never over that 3rd line. I just installed this year a new water pump, all hoses, clutch fan, and i just ordered a radiator. it was 95 deg with 95% humidity and it got closer to that 3rd line towing a 1000 lb and ac blasting. i was worried about head gasket but I pressure tested it and it leaked from aux water pump hoses and failed radiator.