Td5 engine Turbo control

Hello

As a good landrover owner, Í'm always curious how it's works. The last days
I noticed some poor engine respons, not very hard, but it seems theres is
something missing....
Looking at the turbo, and in the workshop manual I came with some questions,
maybe someone has the answers. The defender Td5 MY2002 workshop manual
speaks about a Garrett GT20 turbocharger with an electronically controlled
wastegate modulator. Looking in the engine bay, I see the a turbo, but no
wires. Only a smal pressure hose from the activator to the big tube between
the turbo and the intercooler. No relays or other electrics. How does the
ECU control the turbo? Or is there no control, just a sort of balance
between the exhaust pressure and intakepressure? Looking in the elcetrical
diagrams I cannot find a turbo, regulator or something connected to the
turbo.

The manual (chapter engine management system, page 27) speaks about control
signals to the wastegate modulator. The ECU controls the amount of boost
pressure..... (just for sure, I did'nt see any small pressure hoses on the
ECU under the front seat......)

last question, is it possible the move the turbowastegate linkage by hand?
(with engine off) Just for checking, it isn't stuck. and with little force?
(I can't move mine......)


Tjalf
Defender 110

"Tjalf Bloem" <[email protected]> wrote in message
news:[email protected]...
> Hello
>
> As a good landrover owner, Í'm always curious how it's works. The last
> days
> I noticed some poor engine respons, not very hard, but it seems theres is
> something missing....
> Looking at the turbo, and in the workshop manual I came with some
> questions,
> maybe someone has the answers. The defender Td5 MY2002 workshop manual
> speaks about a Garrett GT20 turbocharger with an electronically controlled
> wastegate modulator. Looking in the engine bay, I see the a turbo, but no
> wires. Only a smal pressure hose from the activator to the big tube
> between
> the turbo and the intercooler. No relays or other electrics. How does the
> ECU control the turbo? Or is there no control, just a sort of balance
> between the exhaust pressure and intakepressure? Looking in the
> elcetrical
> diagrams I cannot find a turbo, regulator or something connected to the
> turbo.
>
> The manual (chapter engine management system, page 27) speaks about
> control
> signals to the wastegate modulator. The ECU controls the amount of boost
> pressure..... (just for sure, I did'nt see any small pressure hoses on
> the
> ECU under the front seat......)

What year is your Defender? If it's before 2002 they weren't fitted with the
wastegate modulator/controller, even though the workshop manual says it
does... Only the 2002-on models had them fitted.

As an aside, I believe (but I've not tried) that you can retrofit a
modulator from a Discovery Td5, and a Td5 ECU, to give another 15 bhp from a
pre 2002 Defender. But I've not tried it and don't really have the ability
to at the moment (

Martin
--
1988 90 Td5 Converted NAS Replica
www.web-rover.co.uk

Martin Lewis wrote:

> As an aside, I believe (but I've not tried) that you can retrofit a
> modulator from a Discovery Td5, and a Td5 ECU, to give another 15 bhp from a
> pre 2002 Defender. But I've not tried it and don't really have the ability
> to at the moment (

Whats the effect of modulation, and what controls it as parameters from
the ECU, does anyone know ?

Steve

"Martin Lewis" <[email protected]> schreef in bericht
news:[email protected]...
> "Tjalf Bloem" <[email protected]> wrote in message
> news:[email protected]...
> > Hello
> >
> > As a good landrover owner, Í'm always curious how it's works. The last
> > days
> > I noticed some poor engine respons, not very hard, but it seems theres
is
> > something missing....
> > Looking at the turbo, and in the workshop manual I came with some
> > questions,
> > maybe someone has the answers. The defender Td5 MY2002 workshop manual
> > speaks about a Garrett GT20 turbocharger with an electronically
controlled
> > wastegate modulator. Looking in the engine bay, I see the a turbo, but
no
> > wires. Only a smal pressure hose from the activator to the big tube
> > between
> > the turbo and the intercooler. No relays or other electrics. How does
the
> > ECU control the turbo? Or is there no control, just a sort of balance
> > between the exhaust pressure and intakepressure? Looking in the
> > elcetrical
> > diagrams I cannot find a turbo, regulator or something connected to the
> > turbo.
> >
> > The manual (chapter engine management system, page 27) speaks about
> > control
> > signals to the wastegate modulator. The ECU controls the amount of boost
> > pressure..... (just for sure, I did'nt see any small pressure hoses on
> > the
> > ECU under the front seat......)
>
> What year is your Defender? If it's before 2002 they weren't fitted with
the
> wastegate modulator/controller, even though the workshop manual says it
> does... Only the 2002-on models had them fitted.
>
> As an aside, I believe (but I've not tried) that you can retrofit a
> modulator from a Discovery Td5, and a Td5 ECU, to give another 15 bhp from
a
> pre 2002 Defender. But I've not tried it and don't really have the ability
> to at the moment (
>
> Martin
> --
> 1988 90 Td5 Converted NAS Replica
> www.web-rover.co.uk
>
>
hello Martin,

My defender is a 2002 model, build in august. Hoe does the modulater
controller looks like?

Tjalf

"Tjalf Bloem" <[email protected]> schreef in bericht
news:[email protected]...
>
> "Martin Lewis" <[email protected]> schreef in bericht
> news:[email protected]...
> > "Tjalf Bloem" <[email protected]> wrote in message
> > news:[email protected]...
> > > Hello
> > >
> > > As a good landrover owner, Í'm always curious how it's works. The last
> > > days
> > > I noticed some poor engine respons, not very hard, but it seems theres
> is
> > > something missing....
> > > Looking at the turbo, and in the workshop manual I came with some
> > > questions,
> > > maybe someone has the answers. The defender Td5 MY2002 workshop
manual
> > > speaks about a Garrett GT20 turbocharger with an electronically
> controlled
> > > wastegate modulator. Looking in the engine bay, I see the a turbo,
but
> no
> > > wires. Only a smal pressure hose from the activator to the big tube
> > > between
> > > the turbo and the intercooler. No relays or other electrics. How does
> the
> > > ECU control the turbo? Or is there no control, just a sort of balance
> > > between the exhaust pressure and intakepressure? Looking in the
> > > elcetrical
> > > diagrams I cannot find a turbo, regulator or something connected to
the
> > > turbo.
> > >
> > > The manual (chapter engine management system, page 27) speaks about
> > > control
> > > signals to the wastegate modulator. The ECU controls the amount of
boost
> > > pressure..... (just for sure, I did'nt see any small pressure hoses
on
> > > the
> > > ECU under the front seat......)
> >
> > What year is your Defender? If it's before 2002 they weren't fitted with
> the
> > wastegate modulator/controller, even though the workshop manual says it
> > does... Only the 2002-on models had them fitted.
> >
> > As an aside, I believe (but I've not tried) that you can retrofit a
> > modulator from a Discovery Td5, and a Td5 ECU, to give another 15 bhp
from
> a
> > pre 2002 Defender. But I've not tried it and don't really have the
ability
> > to at the moment (
> >
> > Martin
> > --
> > 1988 90 Td5 Converted NAS Replica
> > www.web-rover.co.uk
> >
> >
> hello Martin,
>
> My defender is a 2002 model, build in august. Hoe does the modulater
> controller looks like?
>
> Tjalf
>
>
>
Hello Martin,
Great site you have on the TD5 transplant, I also find the answer on my
question on your site. Thanks, I;m now going to look at the Discovery part,
on my rave cd. I presume LR copied the TD5 part from the discovery in the
defender workshopmanual.

If the actuator is not electronic, but just a pressure diagram, Then it
should be moveable by hand, Can you confirm this? (or anyone else..)

Tjalf
http://members1.chello.nl/~t.bloem/defender/frames.html