New clutch fan not working

[BLKWDW]

Electric vs clutch fans?
Took my gq td42t away over the weekend. Towing a 5m long tandem axle trailer loaded with 3 full size and 2 small bikes. 35 plus degrees day towing there and back. Had just replaced the clutch fan, flushed rad and new coolant as i installed an aftermarket temp gauge. Now the thing just ran hot the whole time. 90 at a min but usually around 105-110 degrees and over when going up hills. The first hill i hit i ended up pulling over to let it cool down and i heard the fan kick in and temp dropped quickly. Thats the one and only time i could here it work. Got to the point that it just wouldnt cool down much even when coasting down hill or or at idle. it actually increased at idle. It all came to a head when trying to reverse the trailer into the backyard and needing to have a few goes at it dues to size of trailer it spat the dummy and all it coolant with it. Pop bonnet and couldnt hear the roar of the fan either. Cracked the rad cap let it explode out then started her up with cool water and coolant and temp dropped straight to 80.

Now how or why isnt the fan working? its brand new. How can you test the fans functioning? Considering going twin thermo fans now so i have control of when they come on. Also going to scrap the standard rad in favour of a pwr unit $1275 delivered. Will look at replacing thermostat again as well.

Car never ran hot without the turbo hottest it got was half way towing camper. I know there's hepa of threads on this but just annoying buying a new hub and it making things worse then before. Also I might point out it was a genuine one I replaced it with if that makes a difference

[Winnie]

Hey mate, I just got a new HD radiator in my TD42 GQ for $660 from Natrad. I didn't put a new clutch fan in but I reco'd mine, it's a real easy job, a $10 tube of fluid from Toyota, something like 12 bolts and it's done. Where did you get the clutch from? Did it have warranty? Sounds like it's faulty.

[threedogs]

You may of had an air lock in the system , next time you fill up
park the Patrol nose up and invert a coke bottle with the bum cut out into the radiator.
This will raise your fill point, and hopefully remove any bubbles

[threedogs]

I cant edit my last post but only use OE thermostat,
Get your radiator rodded as chances are its blocked internally and
check bottom of radiator between the fins could be blocked with mud and dust
Go easy with the car wash sprayer don't pull the trigger, you might be surprised
how much gunk is trapped

[Parksy]

Is it possible the new clutch fan has no fluid in it? When you spin it with the engine off, is there resistance?

[BLKWDW]

Hey mate, I just got a new HD radiator in my TD42 GQ for $660 from Natrad. I didn't put a new clutch fan in but I reco'd mine, it's a real easy job, a $10 tube of fluid from Toyota, something like 12 bolts and it's done. Where did you get the clutch from? Did it have warranty? Sounds like it's faulty.

if I get a new radiator it'll b a pwr unit as I've had trouble in the past with others including natrad with my old Holden striker. Also the old fan is stuffed and not rebuild able.

You may of had an air lock in the system , next time you fill up
park the Patrol nose up and invert a coke bottle with the bum cut out into the radiator.
This will raise your fill point, and hopefully remove any bubbles

I will giv it a go but still doesn't explain why the fan won't engage.

I cant edit my last post but only use OE thermostat,
Get your radiator rodded as chances are its blocked internally and
check bottom of radiator between the fins could be blocked with mud and dust
Go easy with the car wash sprayer don't pull the trigger, you might be surprised
how much gunk is trapped

I have washed and blown out the radiator. If it was blocked wouldn't it of got hot before putting the turbo on as well.

Is it possible the new clutch fan has no fluid in it? When you spin it with the engine off, is there resistance?

Possible yeh I guess. Will split the hub and hav a look.

It was still getting up near the last marker with the old fan on which was permanently on, only difference now is it doesn't kool down quick enough once over the hill as fan is not on

[Stropp]

i would say the fault is with the viscous fan hub for sure, as winnie said get a tube of toymota silicone hub oil and throw it in, can only help and you will soon see when you pull it apart,

[Winnie]

Nah bull crap, if it's brand new and is faulty get a replacement one.

[threedogs]

if its new and not working then by all means take it back, is there any resistance
when you try to spin it

[Alitis007]

Lol this is exactly the same fault i had with my trol, couldn't hear the clutch fan engage. I removed the radiator cleaned it inside and out with the hose, I also put 2 thermostats thru it and a new viscous hub but the auxiliary fan would continually stay on plus if i was going up hill the temps rise, i had to drive with my heater on flat out to keep the engine cool.

Long story short my radiator was 40% blocked internally the only way to clean it properly is to remove the tanks and get the tubes cleaned correctly.

Ally radiators are not serviceable so if it gets blocked internally you can try get it cut open and re welded but you'll most likely clog it up again with slag. Get your radiator cleaned out and price up a 3 core copper/brass unit.