Reason being, I could hear it making those familiar 'cold start roar' noises towards the end of my journey home from work today. I don't often drive without the stereo on, so it could have been doing it for ever. Is it possible that I work the engine so hard driving home for an hour that it needs that much cooling? Does anyone else ever hear the cooling fan during normal driving?
Second question, re wheels and tyres. I'm back on my 18" Pirelli Scorpions after about 1000 miles on the STTs and before that about the same on the 19" FFRR ones with Pirellis. My 18" have covered about 15k miles and are worn down to about 4mm tread remaining. The question is, why is the steering that much heavier with these wheels on than any of the others, and why do these wheels have so much more pull back to straight forward? Seriously, my wrists are sore after a long journey, it's a big difference from the others.
(Advice for wrist exercises not necessary)
10th Apr 2007 5:20 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10438
Are the pressures correct In the Beginning there was nothing, which exploded.
A little lower than the label on the door says - 31 front 33 rear. I'll go with the recommended pressures for a bit and see what that does. However, I'm already seeing more wear in the centres than on the sides...
Lets not turn this into another uneven tyre wear discussion. Anyone got any ideas on the fan?
10th Apr 2007 5:30 pm
bkehoe
Member Since: 25 Feb 2006
Location: Wexford
Posts: 1481
Interestingly, my fan was roaring while cruising along the motorway on the way home yesterday too (at around 70 - 75MPH). Temperature gauge, if anything, was a tad lower than normal, probably because the fan was running.
Seems ok today, but have only driven a little over a mile, at slow speeds.IE - 05 D3 TDV6 HSE - Zambezi Silver
SA - 07 VW Golf TDI - White - Sold!
10th Apr 2007 5:46 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
Fan duty will increase if the fuel temperature sensor plug is making poor contact, or the fuel temperature is high. The first is most likely in UK, if you remove the top engine cover you'll see a red plug in front of the oil filter, disconnect & reconnect this a few times and the problem should be sorted
Note: the fan isn't a true 'viscous' fan, it has an electrical clutch and speed sensor, the fan duty is controlled by a PWM signal as part of a closed loop feedback circuit.
There is also a temperature sensor in the air intake manifold, if the intercooler is blocked with mud, then this colud be the reason for increase in fan duty cycle
10th Apr 2007 8:57 pm
bkehoe
Member Since: 25 Feb 2006
Location: Wexford
Posts: 1481
10forcash wrote:
There is also a temperature sensor in the air intake manifold, if the intercooler is blocked with mud, then this colud be the reason for increase in fan duty cycle
Probably explains why it's happened both of us just after a certain event then Better get the cover off, and run the hose through it properly tomorrow so. Thanks 10!IE - 05 D3 TDV6 HSE - Zambezi Silver
SA - 07 VW Golf TDI - White - Sold!
Smashing, thanks 10. I'll give it a bit of a wiggle tomorrow and try to drive home from work in he same manner as I did today. Then hopefully I'll meet that of an astra driver again and tell him what I think of him.
Oops, gone a bit
10th Apr 2007 9:06 pm
bkehoe
Member Since: 25 Feb 2006
Location: Wexford
Posts: 1481
My intercooler was completely blocked up with Boughrood mud. Took me over an hour with the hose to get it clear. So I guess that was why my fan was roaring, and I was finding it a bit more diffficult to get into the overtaking lane on the motorway! IE - 05 D3 TDV6 HSE - Zambezi Silver
SA - 07 VW Golf TDI - White - Sold!
OK, some one a bit more mechanically minded is going to have to help me out with this. I found the air filter box, took it apart, and it was spotlessly clean
I took the engine cover off and found the red plug and gave it all a good wiggle.
So what's an intercooler, and where is it?
11th Apr 2007 7:27 pm
DiscoStu
Member Since: 09 Apr 2006
Location: London
Posts: 11412
Member Since: 08 Aug 2006
Location: Home of LR.
Posts: 2545
Just been out to check mine, and i noticed something
Click image to enlarge
whats the silver clip for (ringed in red).
Have never noticed it before, did something drop off at Boughrood?
11th Apr 2007 7:54 pm
bkehoe
Member Since: 25 Feb 2006
Location: Wexford
Posts: 1481
rouge, no, you're fine, nothing's dropped off! At some stage during 2006, LR stopped fitting a heat shield between the engine and the battery box. That clip is where one of the screws that held it screwed into.IE - 05 D3 TDV6 HSE - Zambezi Silver
SA - 07 VW Golf TDI - White - Sold!
11th Apr 2007 9:09 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
DSL got one (heat shield) retro fitted by his dealer.
11th Apr 2007 9:10 pm
bkehoe
Member Since: 25 Feb 2006
Location: Wexford
Posts: 1481
The intercooler is a small radiator designed to cool the compressed air after it goes through the turbo - cooler air is more dense = more air for the engine.
You need to remove, or drop the front of your Mantec plate (not a bad idea anyway, as mud gathers at the back), or the plastic tray, and then you're looking at the intercooler. Don't direct a pressure washer at it, as you could damage it, just use a hose and be patient.
If it was possible to get at the rear of it, it'd be a lot easier to clean out, but even removing the tray under the steering rack is futile, as there is plastic ducting behind it as well.IE - 05 D3 TDV6 HSE - Zambezi Silver
SA - 07 VW Golf TDI - White - Sold!
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of an astra driver again and tell him what 
You can see it with the sump guard off.
