towing with 2.7 Terrano

[Alzay]

My fan runs all the time aswell.

 

[Toolbox]

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]

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]

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:

 

[weatherman]

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.

 

[Jocky]

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]

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!

 

[weatherman]

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.

 

[(RIP) PLANK]

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 :lol: :lol:

 

[weatherman]

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?

 

[(RIP) PLANK]

There are several threads already running on tyres and squeals i think that may offer sound advice, but i am sure with large chunky tyres on hot dry roads (i find particularly in covered car parks etc.) they do squeal a bit!

However! if it is your rear tyres it could be a sign your diff oil is due for a change but make sure you get the right stuff! there are threads running on this!

 

[weatherman]

Thanksw

 

[grummpyoldgit]

Had new pump fitted as old one was leaking slightly,now temp gauge sits at half way and can rise up to three quarters.Nissan dealers said this is normal as its been filled up with virtualy neat coolant ? Is this salesman bull***t or not? Seem to have a light oiley deposit around fan blades, is the new unit leaking? There are a couple of dents in the rad, they look like they've been caused when getting the rad out,dealers say it was'nt us,now theres a suprise. Is it worth fitting a new rad (£140 from Milners)
or am I worrying too much.Not lost any water, changed thermostat.

 

[(RIP) PLANK]

if it isn't leaking and the dents arent severe i would leave well alone, you can always get it pressure tested if you are concerned :wink:

 

[Jocky]

The time for a new pump has arrived for me.

When returning from a flooded Keswick today driving on A66 my temp gauge was getting a touch to high for my liking. Didn't hear viscous fan kicking in or roaring at the normal temp. Slowed down and temp slowly came back down, also got rid of some heat via the heater :evil: Was nice and hot in the car :wink:

:smile:

 

[SteveP]

Hi Gego, I used to a 1995 2.7 Terrano TD and had the same thing when I was towing. Apparently with the turbo diesel when the the engine is under load,and gets beyond the ideal power range ie climbing a long hill etc, the turbo would cause the engine to get hotter than normal. When the engine load is less, like on the flat the temperature would return to normal.It is a normal characteristic of a none intercooled diesel. SteveP

 

[jace]

yeagh bet that intercooler scoop helps cool everything down fair bitove air getting rammed downwards through that

 

[Jocky]

What I'm saying is the viscous fan didn't start, it normally kicks in and brings temp down when climbing hills.

I've had no problems with it in the past even towed the very same caravan in the hilly and warm regions of northern Spain. The hills are steeper than the mole hills in the UK hahahahaha

So I don't think it is a normal characteristic of the TDI engine, fact is fan didn't work. Never overheated, but temp was way to high

Yes my engine is intercooled

:smile:

 

[(RIP) PLANK]

I can picture exactly what you mean, i didnt realise how bad mine was until i fitted a new pump and then suddenly it was cutting in and out towing up hills, and the temp was better

 

[Jocky]

New pump ordered

Nissan Part No for anyone interested 21010 7F400

My friendly HIGHWAYMAN Nissan Dealer Quoted £160+VAT and even wants £3.60+VAT for the gasket :twisted:
They also quoted £9.95+vat X2 for drive belts as mine is non Air con and has 2 belts, one for powerstearing and one for alternator

Local motor factor quote for QH pump £63.95 INC :smile: will post part no tomorrow

Guess which one I'm buying :?:

:smile:

QH Part No QCP 3473 Equiv MCP 3473

Won't be fitted for a couple of weeks off on my travels again