I can only conclude there must be something wrong with me then, got the bruises and gouges on the back of my hand to show for it. Drives:
2010 FFRR TdV8 Vogue - Stornoway Grey
2010 FFRR TdV8 Vogue SE - Zermatt Silver
1998 BMW E36 M3 GTII

Probably in a different position on the diesel ?
Edit that, you fitted the diesel stat on your M62, thought that was strange, I don't have SAI on mine which might make a difference but I left the fan in place but did remove the induction pipe

The BMW 740d stat is an 88 deg version of the stat that fits the M62 engine, just doesn't have the heater, otherwise it's a straight swap with no need to mod anything which is what I wanted. Anyway I took the induction pipe off as well as the engine cover, still managed to damage myself. Mind you I usually do when I have a spanner in my hand. Drives:
2010 FFRR TdV8 Vogue - Stornoway Grey
2010 FFRR TdV8 Vogue SE - Zermatt Silver
1998 BMW E36 M3 GTII

Skin heals... at least your engine will love you for it...!!  Pete
I now have permission from the boss to use Y.O.L.O. Enjoy life
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

This is very true

So far, noted that top and bottom hoses are no longer like rock after a run, so a very welcome reduction in coolant system pressure there. Also, no blast of heat from under the car when you open the door and that hideous smell is much less noticeable - in fact it might be just residual. No warning lights, temp gauge runs dead central just like it always has. Should have done it ages ago, but it was the modding of the 'stat housing that was putting me off, didn't realise you could get similar 'stats with different temperature ratings. Drives:
2010 FFRR TdV8 Vogue - Stornoway Grey
2010 FFRR TdV8 Vogue SE - Zermatt Silver
1998 BMW E36 M3 GTII

After trying in vain to find a cheaper alternative to the conversation kit the dollar/pound exchange rate improved and I ordered mine. I was also concerned that the higher temp was a positive design and shouldn't be messed with. After lots of reading I am convinced it will not do anything negative including decreased fuel mileage. I have a pin hole radiator leak that I was going to fix at the same time I changed the thermostat but I am curious to see if the drop in pressure will have any affect on the rate of leak.

The change from a 200kPa cap to a 140kPa cap certainly reduced my coolant loss. I still haven't got around to fitting the new radiator I bought before Christmas. Ron B. VK2OTC
2003 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

Haylands wrote:

Well he is 100% wrong, it is not a temp sender it sends power to open the stat, what can you connect it to...??????

It does show a soft fault i.e. it says it's not working but it has absolutely no effect on anything else and as it's a soft code it CANNOT put a warning light on....

This is what it will show

0x48C Electric thermostat circuit fault

Not necessarily. You could have a faulty circuit/thermostat. Have you visually inspected the connection?

I agree with the Doc, it's either you do have the mod or you have a faulty circuit within the 'proper' thermostat.

Mine is showing this fault because I have the mod and I have the multiplug for the thermostat disconnected.

Regards ______________________________
Simon
______________________________

Range Rover Classic 3.5 efi - Gone
Range Rover Classic 3.9 efi - Gone
Range Rover Classic 4.2 LSE - Sadly gone
Land Rover 110 3.5 - Gone
Range Rover P38a 4.0 SE - Pleased it's gone
Range Rover P38a 2.5 DHSE - Just sold
Range Rover L322 4.4 v8 Petrol - Current

RAVE says the thermostat heating element is triggered under load. Does this mean when you accelerate quickly? If so then maybe that circuit could be used to trigger a warning light such as flashing $$$ or £££!. Maybe a recording of sirens or McLaren P1?

doclees wrote:

Not necessarily. You could have a faulty circuit/thermostat. Have you visually inspected the connection?

I did the kit today. One thing to mention at least for me is that allen bolt head use. Although the. Standard head bolt will go on 99% of the way there is a bolt head off the block that makes getting that last 1% tightening impossible with the 1/4 drive 10mm socket. The Allen head was a must for me to get it tight enough.

That's interesting... mine was fine with the four normal bolts, mind you I did use a thin wall deep 10mm socket so maybe that's the difference....  Pete
I now have permission from the boss to use Y.O.L.O. Enjoy life
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Yes I'm sure socket wall thickness is the key. The 1/4 inch drive socket is smaller than the 3/8 but mine was just not enough.