towing with 2.7 Terrano - Page 2

Terranosaurus · 27-08-2007, 20:37

Quote:

Originally Posted by cosmic

My fan runs all the time on mine,so no overheating when towing!!

It will spin all the time with a viscous coupling but it should spin at less than engine speed when the engine is cold, just being dragged along not actually driven if it is operating correctly. As the engine warms up the fan drive "engages" fully so that it spins at engine speed. Check to see if the fan is free to rotate when the engine is cold.

27-08-2007, 20:43

So it should move freely when the engine is not running,it seems to run all the time,don't know what speed though!!

Terranosaurus · 27-08-2007, 20:53

It should move fairly freely when the engine is cold and not running, if the engine is hot it might not be possible to turn it, depends how hot.

27-08-2007, 21:03

Yip..just checked it,moves freely when engine cold,you learn something new every day... : :

Deleted Member S · 27-08-2007, 21:06

On mine you can move it with the engine off (cold) but you can feel resistance when doing so :?

27-08-2007, 22:17

My fan runs all the time aswell.

Toolbox · 27-08-2007, 22:39

The fan will turn all the time the engine is running but it turns at a reduced speed when cold, you should hear it roaring when the engine temp rise above normal, especially noisy when accelerating.

If your radiator fins are breaking up and missing it will not only affect the efficiency of the radiator but will not produce a proper flow of air to the fan, when hot and this in turn will cause the fan not to work in the manner it was designed. (Hot air to the viscous coupling will cause the fan to lock up and pull more air through the radiator to cool)

JonathanM · 28-08-2007, 08:16

Has the OP checked that the cause is not as obvious as a vehicle that has been off roaded, and has been left with a mud coated radiator, blocking airflow through the fins?

Jocky · 29-08-2007, 10:59

Quote:

Originally Posted by PLANK

i still stick with the new pump idea you will be suprised! instead of overheating the temp will climb and the fan cut in! I was suprised when i tried it!

My money is also on the pump. If fan was working you'd hear it kicking in and then stopping when engine cools down.

:smile:

29-08-2007, 18:47

Thanks I can now post again

Now my overheating problem. I was thinking of fitting electric fans.£170
When I spoke to Kenlowe fans they suggested that if towing in hot climates then stick to viscous coupling. Electric fans will give fuel saving of about 8%. They suggest that a viscous fan lasts for about 60000 miles

I am fitting a new rad tomorrow and a new pump. All those who say they have cured the problem by fitting a new pump I wounder if because the fitting of a new fan includes the fitting of a new viscous coupling, the problems have been with the coupling.

Jocky · 30-08-2007, 09:01

I agree that fitting new pump cures the problem or lowers temp because you are getting new viscous coupling :smile:

mines has done 99k and I'm seeing temp slowly creeping up while towing. temp does come down. Will fit new pump soon.

I enquired about kenlowe fans and they wanted £300 and also said refit viscous fan if towing in hot country, so if their fans are not man enough for the job they are not getting my £300 :twisted:

:smile:

(RIP) PLANK · 30-08-2007, 09:53

yes i think the thread is getting some where thw improvement in the temp is down to the new coupling as i said in my first post on this! However, the pumps are notouriously troublesoome so it is worth having a new one as a matter of course as an old one could let yo down without warning! I would take the old rad to a recon specialist and have it tested and inspected and cleaned properly before lashing out on a new one!

Also for the sake of the few extra pounds fit new belts ad a new thermostat - job done!

04-09-2007, 15:07

Fitted new rad and Water pump all seems ok now. Inspected old rad could not see any problems without cutting open. Thanks for help.

(RIP) PLANK · 04-09-2007, 21:53

I htink now you hae done this you are on your way through the initiation ceremonies of being a t2 owner, next the mini filter and then the hubs

:

05-09-2007, 21:44

I have noticed the old rad has plastic top and bottom, New rad seems to be all copper. Whats this about hubs? I have tyre sqeal when going round courners at slow speed. Is this common?

29-08-2007, 18:47	#25
weatherman Guest Posts: n/a	towing Thanks I can now post again Now my overheating problem. I was thinking of fitting electric fans.£170 When I spoke to Kenlowe fans they suggested that if towing in hot climates then stick to viscous coupling. Electric fans will give fuel saving of about 8%. They suggest that a viscous fan lasts for about 60000 miles I am fitting a new rad tomorrow and a new pump. All those who say they have cured the problem by fitting a new pump I wounder if because the fitting of a new fan includes the fitting of a new viscous coupling, the problems have been with the coupling.

30-08-2007, 09:01	#26
Jocky Senior Member Join Date: Feb 2005 Location: Teesside,Englandshire, I only sleep there honest. Vehicle: Nissan Patrol 2.8 TD6 Y61 Posts: 1,420	I agree that fitting new pump cures the problem or lowers temp because you are getting new viscous coupling :smile: mines has done 99k and I'm seeing temp slowly creeping up while towing. temp does come down. Will fit new pump soon. I enquired about kenlowe fans and they wanted £300 and also said refit viscous fan if towing in hot country, so if their fans are not man enough for the job they are not getting my £300 :twisted: :smile: __________________ (Y61) Patrol 2.8TD6 SE Touring.DPT Box. Ironman Nitro Shocks OME Springs 20mm lift front, 30mm lift rear. 33" General Grabber AT's, Airtec Snorkel, EGR Mod. 2.5" Stainless Exhaust

04-09-2007, 15:07	#28
weatherman Guest Posts: n/a	overheating Fitted new rad and Water pump all seems ok now. Inspected old rad could not see any problems without cutting open. Thanks for help.

04-09-2007, 21:53	#29
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	I htink now you hae done this you are on your way through the initiation ceremonies of being a t2 owner, next the mini filter and then the hubs : :

27-08-2007, 20:43	#17
Deleted Member Guest Posts: n/a	*So it should move freely when the engine is not running,it seems to run all the time,don't know what speed though!!*

27-08-2007, 20:53	#18
Terranosaurus Senior Member Join Date: Aug 2006 Location: YORKSHIRE Vehicle: 2001 2.7 TDi T2 SWB Posts: 4,077	It should move fairly freely when the engine is cold and not running, if the engine is hot it might not be possible to turn it, depends how hot.

27-08-2007, 21:03	#19
Deleted Member Guest Posts: n/a	*Yip..just checked it,moves freely when engine cold,you learn something new every day... : :*

27-08-2007, 21:06	#20
Deleted Member S Senior Member Join Date: Jun 2007 Posts: 2,711	On mine you can move it with the engine off (cold) but you can feel resistance when doing so :?

27-08-2007, 22:17	#21
Alzay Guest Posts: n/a	My fan runs all the time aswell.

27-08-2007, 22:39	#22
Toolbox Senior Member Join Date: Sep 2004 Location: Cornwall Vehicle: Oh yes Posts: 1,968	The fan will turn all the time the engine is running but it turns at a reduced speed when cold, you should hear it roaring when the engine temp rise above normal, especially noisy when accelerating. If your radiator fins are breaking up and missing it will not only affect the efficiency of the radiator but will not produce a proper flow of air to the fan, when hot and this in turn will cause the fan not to work in the manner it was designed. (Hot air to the viscous coupling will cause the fan to lock up and pull more air through the radiator to cool)

28-08-2007, 08:16	#23
JonathanM Senior Member Join Date: Mar 2005 Location: Merseyside Posts: 1,048	Has the OP checked that the cause is not as obvious as a vehicle that has been off roaded, and has been left with a mud coated radiator, blocking airflow through the fins?

30-08-2007, 09:53	#27
(RIP) PLANK Senior Member Join Date: Mar 2006 Location: Central England, in the Heart of the Black Country Vehicle: T2 2004 TDI SE LWB Posts: 7,740	yes i think the thread is getting some where thw improvement in the temp is down to the new coupling as i said in my first post on this! However, the pumps are notouriously troublesoome so it is worth having a new one as a matter of course as an old one could let yo down without warning! I would take the old rad to a recon specialist and have it tested and inspected and cleaned properly before lashing out on a new one! Also for the sake of the few extra pounds fit new belts ad a new thermostat - job done!

05-09-2007, 21:44	#30
weatherman Guest Posts: n/a	I have noticed the old rad has plastic top and bottom, New rad seems to be all copper. Whats this about hubs? I have tyre sqeal when going round courners at slow speed. Is this common?