borntobemild
Active Member
- Posts
- 108
- Location
- Sheffield
Hi all,
Recently bought a DII TD5 (2000) after many years of LR's, last one a 90. First thing I bought was a NANOCOM. Got mine off the internet you don't have to pay £230.
Nanocom gives so much information that first I was swamped. Slowly looking at all forums both here and abroad I started to learn. As the TD5 was a good price I decided that I was willing to spend a couple of hundred quid to make it run better as I thought it should.
The readings at first terrified me. I logged them as my starting point and then cleared them. After every fuel fill, approx. 570 miles I checked the fault codes. What a relief they all disappeared. Some one had been looking after this machine but it still didn't pull like it should.
Now I had a staring point to improve its performance. This was a Disco showing no diagnostic faults and yet it didn't drive as well as I expected it to.
First thing, according to all you lot here is get rid of the EGR set up. Imediate result. Difficult to quantify but certainly an improvement and the knowledge that your not throwing more crap into your engine.
Secondly a free flowing filter and Hiclones. I know there's a lot of cynicism out there about these magic devices but having run them in my old 90 the difference was amazing then so I thought I'd give them another go.
The Hiclone before the turbo gives the biggest and most noticable difference. The turbo does kick in a lot earlier. Not so sure about the Hiclone before the inlet manifold. Do it on the cheap and only go for the one before the turbo.
At this point I had a fuel consumption comparison to make. First tank 29.68 mpg, second tank 31.28 mpg. Yes I know that fuel consumption varies enormously but I was encouraged by this.
After trawling the Australian websites for Disco2 stuff (very informative lot they are) I found a thread about electronic diagnosis. It tells you what 'normal readings' are for a Nancom.
I had recorded all my fuelling parameters between each improvement to see what could be gained. The Aussie guys said that a Disco TD5 should be pulling at tickover between 55 and 65 Kg/Hr fresh air on the Nanocom readings and plus 500 at full power. Looking back on my readings I had a maximum flow rate was 32-33 at tickover. The obvious thing to do was check out the MAF sensor.
Luckily I had bought a pile of stuff from someone and he threw in a brand new MAF sensor, it was sitting in my cellar.
I took the old MAF sensor off and it looked clean and tidy. They have been descibed as coated in dust/rust/oil etc, mine looked brand new.....but
Fitted the new one this morning and WOW! All of a sudden the thing pulls like a train and showers you with compliments, well I made the last bit up but what a difference. It pulls smoothly throught the rev range from incredicly low revs and the acceleration is collosal (don't forget the Hiclones and filter).
Well the results are in and after connecting the Nanocom it tells me that at tickover I now have readings of between 52 - 53. That looks like new engine readings to me.
So if you want to improve the performance of your TD5 dramatically change your MAF sensor now! This should be treated as a service item and not a 'wait until it goes wrong item'.
I will post at the end week and let you know if the readings when pulling increase from the present 220-240 to what the Aussies say I should be getting.
I may also in time take out the Hiclones when I've got some repeatable results but for now change those MAF sensors.
Regards to all
Recently bought a DII TD5 (2000) after many years of LR's, last one a 90. First thing I bought was a NANOCOM. Got mine off the internet you don't have to pay £230.
Nanocom gives so much information that first I was swamped. Slowly looking at all forums both here and abroad I started to learn. As the TD5 was a good price I decided that I was willing to spend a couple of hundred quid to make it run better as I thought it should.
The readings at first terrified me. I logged them as my starting point and then cleared them. After every fuel fill, approx. 570 miles I checked the fault codes. What a relief they all disappeared. Some one had been looking after this machine but it still didn't pull like it should.
Now I had a staring point to improve its performance. This was a Disco showing no diagnostic faults and yet it didn't drive as well as I expected it to.
First thing, according to all you lot here is get rid of the EGR set up. Imediate result. Difficult to quantify but certainly an improvement and the knowledge that your not throwing more crap into your engine.
Secondly a free flowing filter and Hiclones. I know there's a lot of cynicism out there about these magic devices but having run them in my old 90 the difference was amazing then so I thought I'd give them another go.
The Hiclone before the turbo gives the biggest and most noticable difference. The turbo does kick in a lot earlier. Not so sure about the Hiclone before the inlet manifold. Do it on the cheap and only go for the one before the turbo.
At this point I had a fuel consumption comparison to make. First tank 29.68 mpg, second tank 31.28 mpg. Yes I know that fuel consumption varies enormously but I was encouraged by this.
After trawling the Australian websites for Disco2 stuff (very informative lot they are) I found a thread about electronic diagnosis. It tells you what 'normal readings' are for a Nancom.
I had recorded all my fuelling parameters between each improvement to see what could be gained. The Aussie guys said that a Disco TD5 should be pulling at tickover between 55 and 65 Kg/Hr fresh air on the Nanocom readings and plus 500 at full power. Looking back on my readings I had a maximum flow rate was 32-33 at tickover. The obvious thing to do was check out the MAF sensor.
Luckily I had bought a pile of stuff from someone and he threw in a brand new MAF sensor, it was sitting in my cellar.
I took the old MAF sensor off and it looked clean and tidy. They have been descibed as coated in dust/rust/oil etc, mine looked brand new.....but
Fitted the new one this morning and WOW! All of a sudden the thing pulls like a train and showers you with compliments, well I made the last bit up but what a difference. It pulls smoothly throught the rev range from incredicly low revs and the acceleration is collosal (don't forget the Hiclones and filter).
Well the results are in and after connecting the Nanocom it tells me that at tickover I now have readings of between 52 - 53. That looks like new engine readings to me.
So if you want to improve the performance of your TD5 dramatically change your MAF sensor now! This should be treated as a service item and not a 'wait until it goes wrong item'.
I will post at the end week and let you know if the readings when pulling increase from the present 220-240 to what the Aussies say I should be getting.
I may also in time take out the Hiclones when I've got some repeatable results but for now change those MAF sensors.
Regards to all
