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GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

ECU part number MSB101181

Hi Guys,

I have been doing my heed in googling and reading through a number of threads on the old "temperature gauge working in reverse". I had initially replaced the sensor hoping for a quick win, but I guess that was wishful thinking..

I have a 1999 defender 90 Td5 and it looks to me as if I might have a non flashable Discovery ECU type...which I'm guessing wasn't in there by default.. does anyone know if that's right??

I also get the jerky performance at low speeds etc ( which I was relieved it wasn't just my bad driving), but it certainly pulls well etc and I'm not aware of any other issues (at the moment)

Am I looking at a new ECU?

Or can I just live with it as is ( assuming it doesn't actually overheat

)

If it is new ecu....any recomendations?

again, thanks in advance for any advice.
Greig

PS planning to get her remapped etc this year so maybe that means new ECU anyway

22nd May 2014 4:16pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6047

Yup, this is exactly what you've got.

When i built the project90-3 (in the "my defender" forum) my engine was ex disco, so I used the ECU just to get me going. Eventually I found a flashable type, and the transformation was unbelievable.

I agree, the throttle is so jerky when using the disco ECU/tune on a defender.

So, if you plan to re-map it at a later date, you will need either an NNN500020 or an NNN000120 or maybe an NNN000250, but I'm not 100% sure about that last one.

With the others, just get a nanocom or similar ECu tuning tool, dump the relavent defender Td5 file to it (depending on what type of engine you've got), and enjoy the nice driving style!!

22nd May 2014 8:15pm

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

Hey diesel_jim.......perfect guv.....it was actually your thread that made the penny drop, but I didn't want to post on it as it looked dormant now..

I did see elsewhere a list of ECU numbers for defenders and discos but didn't see my specific one mentioned....

I am am planning to pay a visit to IRB sometime this year so I can check out with the guys what my options are..

thanks again for your input guv...

I'm guessing there is no real issue driving it like this as long as it doesn't actually overheat

cheers,
G

22nd May 2014 8:34pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5748

1999 Defender 110 Td5 SW Caledonian Blue

If its any help, mine is jerky at low speeds as well.(mine is the same year as yours) 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

22nd May 2014 9:30pm

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

ah ok......no worries...I guess you have the temp sensor issue too then...?

22nd May 2014 9:54pm

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

ah ok......no worries... thanks excossack

I guess you have the temp sensor issue too then...?

are you planing to change ECU it or just living with it ?

22nd May 2014 9:55pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5748

I didn't swap the ECU. Its the standard TD5 110 one 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

22nd May 2014 10:04pm

jomara

Member Since: 26 Oct 2009
Location: Lanarkshire
Posts: 1762

2014 Defender 110 Puma 2.2 XS CSW Santorini Black

I had a problem with my temperature gauge going backwards on my 05 TD5, turned out to be a bad earth to the ECU, run a new earth cable to the ECU and cleaned up the original connections and it was fine.

Hope yours is simpler than ECU swaps. 2014 110 2.2TDCi XS Station wagon
1971 Bowler Tomcat 88 4.2 V8 Auto
2022 110 250D XS

22nd May 2014 11:18pm

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

yeah I think I'll try the earth cable..just in case...plus its cheap n easy..

But guessing that if the MSB101181 is a Disco ECU then i'm probably stuffed anyway..

however, thanks for the input

23rd May 2014 10:10am

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

Tried running a new earth cable from one of the ECU mount bolts directly to the battery.....no joy I'm afraid..

was worth a try anyway..

23rd May 2014 10:50am

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6047

That MSB part number is definately an discovery unit, so all the eaths in the world aren't going to make it run "correctly"

Excossack.... there's jerkyness and then there's jerkyness.... with the disco ECU it is really bad.

23rd May 2014 8:35pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5748

I think I just have the first level of jerkyness with a Defender ECU! 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

23rd May 2014 8:36pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6047

I think early Td5's were quite jerky in that respect.

23rd May 2014 8:43pm

GreigP

Member Since: 13 Apr 2014
Location: aberdeenshire
Posts: 18

diesel_jim wrote:
That MSB part number is definately an discovery unit, so all the eaths in the world aren't going to make it run "correctly" .

yeah I have now "gotten over this"

and am now googling the difference between the NNN500020 or an NNN000120 ( my current thoughts are the NNN000120 ... and a shiny nanocom evo too

( love my gadgets)

Shiny new bits, and a remap are a definite

thanks again diesel_jim

23rd May 2014 9:03pm

excossack

Member Since: 22 Feb 2012
Location: North West
Posts: 5748

diesel_jim wrote:
I think early Td5's were quite jerky in that respect.

I would prefer it if mine wasn't! 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock

24th May 2014 9:39am

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