Ford radiator fans

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Simple

Sikea
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My car was overheating alot on long journeys. So today I changed the radiator.
On the old rad the fans never used to kick in at all and it used to go into the red on the temp gauge.
Now on the new rad(second hand of a newer car) it gets to the top of the NORM on the gauge and the fan kicks in, but only one fan kicks in. Is this normal ?
Also it does not go into the red anymore so I'm chuffed about that anyway, just I see two fans and would have thought both of them would kick in when it got hot.
I have checked the connections and they are like brand new to the second fan. Any info would be great thanks.
 

cess monkey

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I would agree with simon, if fan one can`t get the temp within working range, fan two kicks in to get the temp down.
 

Dave

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Simple, is yours the Sierra 4x4?

If so both fans should kick in at the same time

I had a couple of the XR4x4i's , a Mk1 2.8 - tuned, uprated suspension, strengthened body shell. This was fitted with the twin fans and a cossie thermal sensor to activate them and both worked together.
The only way they would work at different temps is if you had two temp sensor switches on the rad, one for each fan and set at different temps

There are two different rated switches available but to my knowledge they were never both fitted to the same rad to seperately control the fans

If you want to check the fans to see if they work, pull out the plug in connectors on the wires from the fans
Using the wires from each fan not from the loom itself, attatch a +ve wire to the male terminal and a -ve (earth) to the female terminal. The fan should now work
 

Simple

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Oooo Dave you badboy [:D]
Yeah its the 4x4. I will give it a test tomorrow to see if the second fan works then.
At least one works though, thats 100% better than before [:I]
Thanks. [:)]
 

Dave

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If it turns out one of the fans is faulty, they are easy to change but you willneed to unbolt the cowl from the radiator to get to them
This can be done with the rad in the car but is a bit fiddly
If you've still got the old ones, check them as above and if needed swap them about

You might find that you need both fans on a hot day if you're giving it some welly, but if driving like a likkle ol' woman on her weekly sunday trip to Sainsburys, you should get away with just the one most times [;)]

My Mk1 used to get hot just by looking at it at times lol. The original viscous fan had not a hope in hells chance of keeping things cool, plus absorbed about 5bhp, so the twin fans were fitted with the cossie sensor to bring them in when needed
However there was also a manual overide switch on the dash for those needy times when it was being thrashed a bit [:D]
 

Simple

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Ahhh on my mark III escort 3i I had a manual overide switch. Might have to add a switch for the second fan. Will have a better look tomorrow.
Cheers for the advice [:)]
 

dave the fish

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but if driving like a likkle ol' woman on her weekly sunday trip to Sainsburys, you should get away with just the one most times

Thats good Dave, Simple wont have a problem with over heating then[;)][:p]
 

Simple

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Oh right.............
You can post sarcy comments on here but can't speak on msn you clown [:p][:D]
Or did your misses steal the PC again lol [:D][8D]
 
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monkey

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errr does your car have air con??? did the car you took it from have air con???? usually the second fan is for the air con as this has to run constantly while the air con is on
 

Enigma

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You could up grade it for the full racing water cooled system which isn't as expensive as you might think. They cool the engine down much much faster than the twin fan set up.

In fact all you need is a brick for the accelerator, a road map to the nearest cliff over looking the sea and bosh one water super cooled engine coming up.

FORD - fails on race day / fix or repair daily take your pick!!!! LOL
 

Simple

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I think you maybe sort of right Monkey.
There are 3 wires coming from the loom. 1 earth, a red/black and a blue/black.
Each fan has a separate live wire which would suggest that its for something else or controlled by a separate switch.

I did find this...
The substantial airflow through this radiator at highway speeds allows the PCM to turn off the fans completely above 55 MPH; at lower speeds, one fan normally takes care of cooling needs. Increased operating temps or use of the air conditioning will cause the second fan to activate

But my speedo don't work anyway lol [:I]
The cost of fixing it along with the heater matrix is more than the car is worth [:(]

Thanks all for the help. [:)]
 
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