Hippo · Dec 30, 2011

upstream said:
Hi,
I remember when we had a Rover 75, one way to test the cooling fan was to switch on the a/c because even if cold, with the a/c switched on, it caused the cooling fan to come on. Is this the same with the Freelander V6? 109 degrees before the fan kicks in does seem a little hot - I wonder whether there is a modification that activates it automatically at a lower temperature?

Andy.

Just looked at the vid when I tested it. Gets up to 109 degrees on the hawkeye then drops to 106. Thats whilst stationary when up to running temp. Both fans come on. Yes both fans will come on when air con is on. I do this when off road as revving at 1000 to 1800 revs in first gear means the engine isn't getting the air flow, when compared to doing the same revs in 3rd gear. At 60mph it's 92 degrees. But then again I int too confident in me hawkeye, sadley. Will try it again and measure manually. Not sure about mods. In theory there must be a voltage measured via the temp sensor. This could be fiddled wiv. Or the stat drilled. The fans have a puter that controls them wiv a modulated siganl. Variable speed operation depending on requirement.

upstream · Dec 30, 2011

Hippo said:
Just looked at the vid when I tested it. Gets up to 109 degrees on the hawkeye then drops to 106. Thats whilst stationary when up to running temp. Both fans come on. Yes both fans will come on when air con is on. I do this when off road as revving at 1000 to 1800 revs in first gear means the engine isn't getting the air flow, when compared to doing the same revs in 3rd gear. At 60mph it's 92 degrees. But then again I int too confident in me hawkeye, sadley. Will try it again and measure manually. Not sure about mods. In theory there must be a voltage measured via the temp sensor. This could be fiddled wiv. Or the stat drilled. The fans have a puter that controls them wiv a modulated siganl. Variable speed operation depending on requirement.

With mine the a/c doesn't work. I knew this when I bought it and being the type of person that never uses a/c anyway it wasn't much of a consideration for me. I do know however that when the a/c is turned on, that the compressor does kick in and produce extra load on the engine. You can probably guess where I'm going with this but if not...

My question is - if a person wanted to reduce the engine temp and turned the a/c on, would the increased load result in no net benefit of having the fans kick in anyway or, in a case such as mine, would I be better off just disconnecting "something" that would cause the compressor not to kick in yet still produce the desired result in the case of the cooling fans. If so I could just turn my a/c button into a manual engine cooling button instead!

What do you think...;-)

Andy.

Hippo · Dec 30, 2011

upstream said:
With mine the a/c doesn't work. I knew this when I bought it and being the type of person that never uses a/c anyway it wasn't much of a consideration for me. I do know however that when the a/c is turned on, that the compressor does kick in and produce extra load on the engine. You can probably guess where I'm going with this but if not...

My question is - if a person wanted to reduce the engine temp and turned the a/c on, would the increased load result in no net benefit of having the fans kick in anyway or, in a case such as mine, would I be better off just disconnecting "something" that would cause the compressor not to kick in yet still produce the desired result in the case of the cooling fans. If so I could just turn my a/c button into a manual engine cooling button instead!

What do you think...;-)

Andy.

Theres an electric wire to the air con compressor which controls the magnetic (I fink) clutch. When on tick over and switching on/off the air con this clutch will operate. If the revs alter then the clutch operation is working. Hence yer compressor should be spinning. Am not an eggspert on cars but air con can fail if it has a leak. Fink theres sensors monitoring the air con system too. A tyre fitter type place will top up yer air con for about £50, with no charge if they detect its leaking. They wont top it up then. Some info ere: Freelander - Air Conditioning Specifications - Land Rover

I talked wiv someone before about a manual override on the fans. Never got round to playing wiv it. Hence running me air con when slow driving orf road. The air con load of 16% more fool quoted by cars magazines etc is misleading. Id be willing to wager a Freelander v6 at 2500 revs at 60mph int going to suffer fool demand increase of 16% when the air con is switched on. It may if its sat when up to normal running temp, at tick over. But I wouldnt eggspect such a huge increase whilst driving. Air con compressor is very small when compared to the strength of the engine.

Fan control: Theres some stuff about this in the rave. From memory either the air con can switch them on (via the engine puter), or the engine puter when its wants to can put the fans on id it senses the eigines hot of the fale safe on control if the sensor give a duff reading. Fan control is done by a separate puter which can run at say 10%, up to max. Now running the fan whilst driving would allow betterer air flow past the radiator, but I dont know if this would have a beneficial effect to cool the engine. Reason being (and I is using logic guess work ere) the radiator only cools the engine when the thermostat opens. Hence there may be a situation where travelling at say 30 mph or above where the thermostat is closed, as air speed through the engine bay is enough to cool fings.

I int really sure is the honest answer. But anything you do to the cooling system must not be detrimental to the ability to cool the engine, or you risk over heating the engine.

Roberto FL · Jan 14, 2012

i bougth mine 1 month ago in brazil (it cost me about 15000 pounds - believe me = 45000 $ Reals) for a 2004 v6. Now is in the shop to fix the internal engine cooling leaking (head gasket?). The service will cost 8000,00 reais = 2800 pounds... seems like bad sense for jokes!!!!

Happilly is under warranty. I think after this i can use the car (that i really liked) for a while without problems.

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