rodntod · Oct 31, 2012

Datatek said:
Tony, I'm pretty sure when I had the manifold off last week there were 3 sensors in the block on my 2000MY.
Rod, it sounds like you have the wrong sensor, you are right a drop to 230 would barely move the gauge.
there is certainly no aircon coolant sensor visible on the heater pipes unless you meant the one next to the heater matrix?

I think i might have 3 sensors as well Keith, but i will remove manifold in a bit and make sure.

RAVE is showing me conflicting pics depending on which version i open up.
I need to study more pics

Keep them coming guys,thanks
Ed

wammers · Oct 31, 2012

Datatek said:
Tony, I'm pretty sure when I had the manifold off last week there were 3 sensors in the block on my 2000MY.
Rod, it sounds like you have the wrong sensor, you are right a drop to 230 would barely move the gauge.
there is certainly no aircon coolant sensor visible on the heater pipes unless you meant the one next to the heater matrix?

RAVE is up it's own arse on this one Keith. It's difficult to extrapolate but here goes.

Component location table Rev 11/2000.

X114. Manual page 88. Engine coolant temp sensor (Gauge). Just to rear of and above injector pump.

X126. Manual page 19. Diesel fuel. Near to number four injector. ECU temp sender. Connector CO196D. BW & SO Black/White - Grey/Orange.

X304 Aircon coolant sensor. Clipped to inlet pipe on matrix. CO890. Same wiring codes as CO196D. As in X126.

If you look at instruments diagrams you get same connector call up CO196D as X126 but with colour code NY & G Brown/Yellow - Green.

Landrover call up a different Gauge coolant sensor for vehicles with aircon why i do not know. Over to you electrikery guru. My bloody head hurts.

rodntod · Oct 31, 2012

wammers said:
RAVE is up it's own arse on this one Keith. It's difficult to extrapolate but here goes.

Component location table Rev 11/2000.

X114. Manual page 88. Engine coolant temp sensor (Gauge). Just to rear of and above injector pump.

X126. Manual page 19. Diesel fuel. Near to number four injector. ECU temp sender. Connector CO196D. BW & SO Black/White - Grey/Orange.

X304 Aircon coolant sensor. Clipped to inlet pipe on matrix. CO890. Same wiring codes as CO196D. As in X126.

If you look at instruments diagrams you get same connector call up CO196D as X126 but with colour code NY & G Brown/Yellow - Green.

Landrover call up a different Gauge coolant sensor for vehicles with aircon why i do not know. Over to you electrikery guru. My bloody head hurts.

Mine hurts a bit too wammers. I did notice on one of the spares sites,it says people who bought this nsc100820 also bought stc2254,and vice versa.
I am wondering why people would buy both of these unless they are both fitted ??
It's a minefield i tell ya

wammers · Oct 31, 2012

rodntod said:
I think i might have 3 sensors as well Keith, but i will remove manifold in a bit and make sure.

RAVE is showing me conflicting pics depending on which version i open up.
I need to study more pics
Keep them coming guys,thanks
Ed

Don't think you have. The gauge sensor is near injection pump, the ECU sensor is above oil filter near injector four. Both use same type of plug but different wiring codes. Confusion comes from CO196D only being shown in connector views with codes for ECU sensor. The same type of plug is used in two positions with different wiring codes.

rodntod · Oct 31, 2012

wammers said:
Don't think you have. The gauge sensor is near injection pump, the ECU sensor is above oil filter near injector four. Both use same type of plug but different wiring codes. Confusion comes from CO196D only being shown in connector views with codes for ECU sensor. The same type of plug is used in two positions with different wiring codes.

cheers wammers, and yes i agree with all the above, and am becoming more confused by the minute

.

Trying to find a definite answer as to which gauge sensor is right for mine.
Being that it has an older engine fitted,albeit fitted with an old inlet manifold but having EGR and MAf to suit the cars wiring loom,it makes me wonder if the black sensor fitted above and to the rear of FIP, was maybe the older aircon sensor,pre 2000my.
just another idea which may be totally wrong

wammers · Oct 31, 2012

rodntod said:
cheers wammers, and yes i agree with all the above, and am becoming more confused by the minute .

Trying to find a definite answer as to which gauge sensor is right for mine.
Being that it has an older engine fitted,albeit fitted with an old inlet manifold but having EGR and MAf to suit the cars wiring loom,it makes me wonder if the black sensor fitted above and to the rear of FIP, was maybe the older aircon sensor,pre 2000my.
just another idea which may be totally wrong

As far as i can see same sensor is fitted to all with aircon. I can at the moment find no change notification for it. The only view you can get of Gauge temp sensor is in instrument repair page 88 manual. Temp sensor replacement.The thick plottens.

rodntod · Oct 31, 2012

wammers said:
As far as i can see same sensor is fitted to all with aircon. I can at the moment find no change notification for it. The only view you can get of Gauge temp sensor is in instrument repair page 88 manual. Temp sensor replacement.The thick plottens.

Indeed it does Holmes

rodntod · Oct 31, 2012

Guys ,just wondering.Do either of your cars have the same year loom and aircon fitted.What colour is the gauge sender on your car?

Beginning to wonder if when the engine was fitted(dunno what from) were the sensors left in from the donor car of unknown identity??

Mibbes aye, mibbes naw.

wammers · Oct 31, 2012

rodntod said:
Indeed it does Holmes

I would not be surprised if my old adversary the archvillain Dr Moriarty, was not involved in the design department at Sollihull Watson.

wammers · Oct 31, 2012

rodntod said:
Guys ,just wondering.Do either of your cars have the same year loom and aircon fitted.What colour is the gauge sender on your car?

Beginning to wonder if when the engine was fitted(dunno what from) were the sensors left in from the donor car of unknown identity??

Mibbes aye, mibbes naw.

Think you are going to have to bite the bullet and spend on a new correct sensor. See what you have then. It's pointless going around the houses if the sensor is in any way suspect. Has the gauge ever worked?

rodntod · Oct 31, 2012

wammers said:
Think you are going to have to bite the bullet and spend on a new correct sensor. See what you have then. It's pointless going around the houses if the sensor is in any way suspect. Has the gauge ever worked?

Which one do i buy though

do i buy the blue one or another black one??

Has never worked for me or previous owner, who owned it for 11 days then **** himself when it started behaving like a RR, and promptly sold to me

wammers · Oct 31, 2012

rodntod said:
Which one do i buy though do i buy the blue one or another black one??

Has never worked for me or previous owner, who owned it for 11 days then **** himself when it started behaving like a RR, and promptly sold to me

Well you either have a replacement engine with an incompatible sender or a duff BECM. Which is the cheapest to try first? The sender that says for vehicles fitted with aircon maybe my first choice.

Datatek · Oct 31, 2012

Been a bit busy today but will have another look tomorrow at both engine, early & late. IMO it's a waste of time looking at RAVE on this there are just too many errors. I'm still sure there are 3 sensors on my 2000MY, one at the front, one by the oil filter and one towards the back, all in a horizontal line. If the sensors are not expensive I'd buy a blue one to try. Otherwise a 10k potentiometer across the wires should allow you to operate the gauge.

Datatek · Oct 31, 2012

wammers said:
Well you either have a replacement engine with an incompatible sender or a duff BECM. Which is the cheapest to try first? The sender that says for vehicles fitted with aircon maybe my first choice.

I'm hopeful it's not the BECM Tony as the temperature figure does change as the engine warms up, just doesn't change enough.

rodntod · Oct 31, 2012

Thanks guys for all the help and info so far.
Keith it will be interesting to see what sensors are in your cars.
You have the bonus of a old spares dog and a model with same loom as mine,and hopefully they have different sensors and i have the wrong one fitted.
Do not like the sound of the duff BECM ,so fingers crossed.

wammers · Oct 31, 2012

Datatek said:
Been a bit busy today but will have another look tomorrow at both engine, early & late. IMO it's a waste of time looking at RAVE on this there are just too many errors. I'm still sure there are 3 sensors on my 2000MY, one at the front, one by the oil filter and one towards the back, all in a horizontal line. If the sensors are not expensive I'd buy a blue one to try. Otherwise a 10k potentiometer across the wires should allow you to operate the gauge.

There are three sensors Keith Gauge temp, ECU temp and oil pressure sensor. But don't think they could be described as all in a line. The oil one is on the side of the oil filter casing.

rodntod · Oct 31, 2012

Heres a question which may plotten the thick even further:

If the blue coolant,green EDC, and old brown single terminal temp sensors all have an extended probe to dip in't water, why does the black one have no probe??? Riddle me that then

Just trying to keep the plot simmering.

wammers · Oct 31, 2012

rodntod said:
Heres a question which may plotten the thick even further:

If the blue coolant,green EDC, and old brown single terminal temp sensors all have an extended probe to dip in't water, why does the black one have no probe??? Riddle me that then

Just trying to keep the plot simmering.

Don't know ask Landrover they designed it. Maybe it's a different type of sensor.
There has to be a distinct difference between the two types. Otherwise why would they produce and fit a different sensor for aircon vehicles than none aircon. It maybe the way the BECM reads it that is different. If the BECM on aircon vehicles is differently programmed that would explain it.

Datatek · Nov 1, 2012

wammers said:
Don't know ask Landrover they designed it. Maybe it's a different type of sensor.
There has to be a distinct difference between the two types. Otherwise why would they produce and fit a different sensor for aircon vehicles than none aircon. It maybe the way the BECM reads it that is different. If the BECM on aircon vehicles is differently programmed that would explain it.

The readings in the BECM are the output of a simple 8 bit analogue thermocouple to digital convertor chip which can produce numbers between 0 and 255 depending on the resistance present. The BECM could certainly modify the values but it seems pointless.

Datatek · Nov 1, 2012

wammers said:
There are three sensors Keith Gauge temp, ECU temp and oil pressure sensor. But don't think they could be described as all in a line. The oil one is on the side of the oil filter casing.

Nope, all 3 are in line in the block under the inlet manifold

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