Any suggestions please Disco TD5 owners?

[listening]

Hi guys,
I'm not here often, usually any advice I need has been covered before 7 it's just a matter of searching. So thank you for all your help, weather you have realized you have helped or not, you have, thank you.
I am a Land Rover/Range Rover tragic, have had series 1 Discos, now have 2x series 2's, (1x V8, 1x TD5, & a L322 Rangie) so I'm usually pretty good for an answer; But this time,....no joy in a search, so I am asking up front.
My TD5 seems to be getting slower in her old age, she is an absolute gem, fully ARB kitted, sorted really, really well, right down to the solid steel rear bumper, I mean, you could want for nothing in this car, full house, so I really, really want to keep her, I could never afford all that stuff again on another car! Now, it might be I'm spoilt by the "Zip & Pep" the L322 (deisel) seems to have, but the old Disco seems to be getting so slow, my son describes it as, "Wheezing". Yet everything checks out fine as far as the guys at the, "Stealership" are concerned, she has been faithfully serviced every single 10,000K, & believe me, if those guys could find something to add to the bill,...They would! Any ideas, or is it just me?
There must be a thousand years of experience here, so any ideas on giving my favorite girl some more. "pep in her step"? Thanks guys,...Over to you!:)

[isuzurover]

Not a TD5 owner, but I would start by removing the EGR and cleaning the intake and intercooler if not already done.

[Disco EMU]

Check all the hoses around the turbo and while your at it ... have a good look at the turbo and check for any cracks or oil leaks.

How many kms has she done?

[Hay Ewe]

Series 2 are getting near on 10 years old now
rubber and various types of rubber hoses decay after years, consider that they are in a hot country and a hot engine bay area.

I would consider checking your air hoses in teh inlet system. They can delaminate and bulge inwards, impedeing air flow. Also a clean of the intercooler and inlet mani-fold may help as well, again, after 10 years, despite ther being filters, there could well be gunk in there.

Just because a stealership bills your for it, doesnt mean they do it

Hay Ewe

[greg smith]

MAF, intercooler hoses-tubo connects,trans oil and finally a remap--does wonders---the EGR removal is essential for longevity---:D

[ramblingboy42]

Series 2 are getting near on 10 years old now
rubber and various types of rubber hoses decay after years, consider that they are in a hot country and a hot engine bay area.

I would consider checking your air hoses in teh inlet system. They can delaminate and bulge inwards, impedeing air flow. Also a clean of the intercooler and inlet mani-fold may help as well, again, after 10 years, despite ther being filters, there could well be gunk in there.

Just because a stealership bills your for it, doesnt mean they do it

Hay Ewe

HAY EWE,
mine is 13yrs old.....
Dennis

[rangie ute on 38'']

disconnect maf sensor and see how it goes if better then all else maybe well, i found the same symtons a while ago and for a simple check has shown a bad maf sensor.

[justinc]

err, try sending it to jenny craig. sounds like it is a bit heavy now with all those accesories...

power to weight ratios go the wrong way the more stuff you add to the vehicle...

i would also get a look at the actual maf output numbers and report back here


jc

[Hay Ewe]

HAY EWE,
mine is 13yrs old.....
Dennis

Yes, I didnt express that very well, I meant that the youngest are 10 years old, our first was aon 02, our current is an 02, yes, there are plenty out there older (and probly a lot cheaper and less hassel than a 10yo kid!)

Hay Ewe

[Hay Ewe]

I had another thought as well.
May be it needs a good blow out, take it for a decent hard drive, get it hot and burn off some of the soot that accumulates.
Diesels need to work some times to blow the cob webs out.

after reading all the above, I think the suggestions here cover all things to do

Let us know how it goes

Hay Ewe

[onebob]

Clean the MAF sensor (CRC have a MAF Cleaner) and check the resistance with on ohm meter.

The data below i plagiarised from another post on AULRO some months ago to keep for future reference. How rude of me not to be able to name the author. Also as mentioned by Hay Ewe get out and give it a thrashing to blow out the pipes. I went into Wonnangatta Valley from the Myrtleford side recently and spent 3 days camping and lots of low range driving on the surrounding tracks, Herne Spur Track was memorable (up and down) Wombat Range Track (up and down) and Harts Spur Track (up and down) and then exit via Wombat Range Track to Mt Cynthia Track to Eaglevale, onto Dargo and home. The drive from Bairnsdale to Dandenong was a joy - the was no holding the beast back - she purred home.

Here's the MAF resistances - as i said above i am not the author

cheers onebob

Resistivity values taken from MAF sensors
New OEM MAF:
Pins 1-2 = 16.8 kohm
Pins 1-3 = ~34 Mohm
Pins 2-3 = ~34 Mohm

Used dodgy MAFs (due being replaced):
Pins 1-2 = 16.8 kohm
Pins 1-3 = 12.28 Mohm
Pins 2-3 = 12.33 Mohm

Pins 1-2 = 16.8 kohm
Pins 1-3 = 19.38 Mohm
Pins 2-3 = 19.34 Mohm

Known dead MAF:
Pins 1-2 = 16.8 kohm
Pins 1-3 = 6.23 Mohm
Pins 2-3 = 6.25 Mohm

From the above it could be concluded that all MAFs, either good or bad, have the same conductivity between pins 1-2 & conductivity between pins 1-3 and 2-3 appears to decrease as the MAF deteriorates.

[Yorkie]

clean maf/airfilter.
turbo hoses are easy to check, replace if they look like this!

https://www.aulro.com/afvb/images/imported/2012/11/69.jpg

:D

[onebob]

BTW my MAF resistance measurements were...

Pins 1-2 = 16.8 kohm
Pins 1-3 = ~21 Mohm
Pins 2-3 = ~21 Mohm

I'm going buy a new one ;)

onebob

[OffTrack]

BTW my MAF resistance measurements were...

Pins 1-2 = 16.8 kohm
Pins 1-3 = ~21 Mohm
Pins 2-3 = ~21 Mohm

I'm going buy a new one ;)

onebob

There is evidence that mturri's figures need to be taken very literally. 21Mohm is substantially different to 19.4Mohm. It's easy to forget this is a 1,600,000 ohm difference when you talk in Mohm ;)

Mine is a OEM VDO/Siemens unit which is about 12 months and measures around 21Mohm. Toppa recently bought a VDO/Siemens unit from Td5alive which also measured 21Mohm out of the box.

As the Land Rover units are made by VDO/Siemens, and both MAF perform as expected in terms of air flow readings I'm almost 100% that 21Mohms is NOT a dodgy MAF.

You'll be wasting your money running out and buying a new one on the basis of those measurements alone.


Cheers
Paul

[OffTrack]

Clean the MAF sensor (CRC have a MAF Cleaner) and check the resistance with on ohm meter.

The data below i plagiarised from another post on AULRO some months ago to keep for future reference. How rude of me not to be able to name the author.

The figures were originally posted by MTurri:

http://www.aulro.com/afvb/1638565-post6.html