What would cause heavy steering on a TDV8 was ok then was heavy? ..

In my case - loss of PAS fluid - simple to see in the engine bay (can't remember where but it's in the book, think it's the pink reservoir but check).

Topped it up and was all OK until garage tightened a loose pipe.

Servotronic transducer valve or Body Processor Module , if you get the codes read it will probably show short circuited on servotronic valve and open circuit . 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Ok ill check where is the valve exactly? .

Offside wheel arch tucked in tight above the steering arm , bolts usually corroded and will shear when you try to remove them so it will be out with the Dremel to cut them . The main problem is there is no clear way to tell if it is the valve or ECU so you change the valve first and if that doesn't do it you change the Body Processor Module and that has to be a new one and programed to the vehicle but this is possible with an iiD Tool. 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Ok thank's for your help

Tried the vavle and it made no difference ? , Where do i source a "body processor module" ??..
Is that the next thing to try ? .

Duckworth Dan is you man ( site sponsor here) It's a very simple job , just unbolt the passenger seat and under the plastic flap on the floor is the BPM . Do you have a diagnostic tool to copy and swap the setting from the old unit to the new unit ?
I'm guessing no because you haven't come back with any fault codes so you may need to seek out an independent mechanic with Land Rover testbook . 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Can you buy them second hand ?..Or do they have to be new ?.

Have you had the codes read...???

You could be spending a lot of money for no reason if it was something else, there are numerous other things it could be, Axle has highlighted the most common and suggested reading the codes to confirm but they are certainly not the only reasons for your fault... Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Ill read the code's tonight i have access to a sollus diagnostic reader..

Just had the Body possessor module read came back with "servo valve or connection's short circuit , servo vavle or connection's open circuit" ??....

I have replaced the transducer on the rack what is the servo valve ? ..

The transducer is the servo valve, if that's OK then it is probably the BECM, pretty sure I remember someone had a problem with it's earthing bolt which is at the bottom of the "B" pillar on the passenger side, you have to remove the seat and carpet to get at it I think... They had a bad earth that stopped the power steering working, others have had faulty BECM's...

Do a search there are loads of threads on the problem...  Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-