Thread: rangie operating temps

If you cannot get a viscous fan and shroud go to your nearest Ford dealer and buy a thermofan set for an AU 6cyl or 8cyl falcon ute there are two fans + the cowling and it fits a Rangie radiator very well and brackets are not hard to make or fit. These fans will cost you about $200 complete which is very cheap for thermos. I run them on my rangie which is running a 3.9 Isuzu diesel which I can run the air con all day on road off road low range , mud, rock climbing you name it and they handle it perfectly.
The trick is in the shroud it must cover the whole core.
My cheap fan secret is out.

Regards Justin

Hey Ferno.
No insult intended at all.I would NEVER just put a part back the way it was to start with,assuming it was correct in the first place.Thats what workshop manuals are for.I have helped 3 mates out with overheating cars,the cause,BACK TO FRONT THERMOSTAT!!!!!!!!
Andrew

:roll: hmmmm,the twin fan setup sounds like a cheeper option,if for two fans and shroud for approx $200,considering the 4wd catologue quotes the viscous coupling at $220 plus the fan blade at $209,its only plastic for cripes sake 8O 8O 8O 8O 8O plus then to find a shroud ,it aint rocket science!!!!

<div class='quotetop'>QUOTE</div><div class='quotemain'>except for a very hot motor,thermostat opens in a saucepan of water just as it boils,seems strange that it has to boil before it opens,thought it would have opened a little earlier than that [/b][/quote]

Unless I've read this wrong I think we have a problem here, from memory the thermostat should be opening at around 83 deg. and fully open at about 88 deg.

I take it the temp is actually that high and there isn't a faulty temp gauge, I fixed mine with a new sender when I had this type of problem years ago.

Just a couple of thoughts


BUshie

Originally posted by Bushie
<div class='quotetop'>QUOTE</div><div class='quotemain'>except for a very hot motor,thermostat opens in a saucepan of water just as it boils,seems strange that it has to boil before it opens,thought it would have opened a little earlier than that

Unless I've read this wrong I think we have a problem here, from memory the thermostat should be opening at around 83 deg. and fully open at about 88 deg.

I take it the temp is actually that high and there isn't a faulty temp gauge, I fixed mine with a new sender when I had this type of problem years ago.

Just a couple of thoughts


BUshie[/b][/quote]

tis a very frustrating situation,and could be costly as well :roll:
not completly knowing the previous running situation (vehicle bought unreg so not a large test drive available) tis very difficult coming up with a logical answer to the problem,it could be therm probs ,BUT it overheated without a thermo in,was it overheating before ,maybe ,was told by prev owner that the temps had gone up a bit but had been a faulty relay on the fan circuit,supposedly fixed (why does fan run always on? )could it be that fan not big enough,it only covers half of the radiator 8O could it be the piddly little fifty dollar item(inflation ) the sender unit that is faulty,dunno 8O :?
seems that it will be a process of elimination ,cheapest to dearest,as its always the $2 part that lets you down :wink: :roll:

Originally posted by LandyAndy
Hey Ferno.
No insult intended at all.Andrew

none taken 8)
I got thick skin ,i own a rangie ops:

hmm, you shouldnt need any fans while driving on main roads, airflow is sufficient.
thats why its a viscous fan---
:?

Hi Mate
I really feel for you, I had a very similar problem.
The RR would run for about 10-20 minutes then the gauge would hit the red.

I eventually replaced the radiator, thermostat, temp sensor, hoses, whatever I’m not going to list it all but lets just say it cost a few $$$ and was a pain in the ar$3 for a couple of weeks.

Anyhow………
Firstly your thermostat should open WAY!! before boiling, if memory serves, (it usually doesn’t) it starts to open about 80 degrees.

Also you said
“the fan only covers about half the rad as does the cowling”
I have an older rangie with a viscous setup, (81’) and the fan covers about 1/2 the radiator but the cowling covers the whole core of the radiator.
So the cowling doesn’t sound as if it’s the right one but I could be corrected?

If you are going to stick with electric fans put two on to cover the whole radiator.

I put my problem down, (I think) to lack of a thermostat and a bunged up radiator.
Try getting your radiator cleaned it costs about $100
Or use the DIY method like me, remove the radiator place on a flat surface, (like your drive way) and flush it through from the bottom up.
Then, (listen to the screams of landy fans) I put a solution of pool acid, (approx 20%) and water and refilled the radiator, let it bubble for a few minutes then flushed it through, a lot, with a garden hose. A lot of crap came out when I done it.

You may also want to check you temperature gauge to make sure it really is overheating, This is advise from another website:
Check the gauge itself by pulling the connector off the sensor and measuring the voltage on it (should be about 10 volts). With an 82 ohm resistor to ground in place of the sender, the temp gauge should read about mid range. The thermostat can be checked by heating it in a saucepan of water and measuring the temperature at which it opens (should be around 88 deg C).

Hope this helps

Steve