td5 feels flat help

[ragerover]

right just got the td5 sorted
its excellent off the mark  and mid range but the top speed is crap

i know there all poor i ran a 200tdi for 11 years but this seems poor great to 60 then struggles to 75mph max it just seems to run out of steam (its deisel i know)
my  200 tdi had the big intercooler and fuel pump mods by jeremy fearn so i could have been spoilt
and to be honest i cant remember before i had it done
it would pull 90 if you wanted but would sit at 75 all day and you could put your foot down and pass plenty stuff if you wanted

the td5 did have the infamous oiling of the harness problem which i replaced and dried everything out  (at least 5 times)
its now bone dry
its a 2000 model with 60 k miles
im eventually going for an upgrade but to be honest im skint at the moment

i love the truck but it just feels flat   ive checked and changed filters etc
how fast are they as standard~?
 got back in the old 200 tdi today and the difference is huge
any advice or help would be grately appreciated
cheers
martin

[burgerman]

 Not sure if ours felt "flat" but seemed to run out of revs/steam @ 70 ish, and certainlt did not feel happy at that speed, But we had the disco 2 gears fitted, and wow what a difference   
  Feels much happier to drive at motorway speeds, and you can hold it in gear longer to utilise the power more,

[Porny]

A 90 even on standard gearing should do 90mph plus... (a 110 even with a roof rack will pull 95mph on the speedo)....

There are few things that can cause problems on Td5's (not all of them affect top speed though)-

Faulty Mass Air Flow meter
Faulty MAP sensor (goes to a default value)
Faulty injectors
Faulty Fuel Pump (should be 4bar at the engine)
Faulty EGR Set-up (better removed anyway!!)
The infamous harness issue (which you've resolved)
Dodgy ECU's
Faulty Turbo actuators (either siezed or ill adjusted)
Faulty/split/delaminating intercooler pipes


And a few other bits and pieces....

Personnally.... apart from checking the obvious things like air fliters etc etc, I'd get it checked over by someone with proper diagnostic kit - using the live data page get them to check everything is working correctly.


Ian

[Jimbo]

My '53 plate 110 hardtop (ex-electricity board) is exactly the same - rapid up to 60, it will make it to 70-75, but my ears can't take the noise.............I've ripped out the EGR junk, fitted a known working standard ECU (thanks Ian), and still no change in the top speed. My theory is that as the leccy board towed huge trailers, maybe they had the gear ratios changed to stop the sparkies from doing 90 with a 3ton genny on the back !

When I find some spare cash (and another transfer box), I'm going to get one of the Ashcroft box's with Disco high range gears - and then do a straight swap and see what difference it makes.

[L90OOK]

Hmmm...sounds like you are running D2 High Range Gears &/or large tyres.  :-k
Bin the EGR & fit THIS
Also straight through mid pipe will help & sounds wonderful  :lol:
I fitted a Dastek chip to my Td5 & wow  :shock: what a difference that made.

[Jimbo]

Hmmm...sounds like you are running D2 High Range Gears &/or large tyres.  :-k

Large tyres yes (well, only 265/75/16's), surely the D2 high range Tbox would give a higher top speed - which is what me and Ragerover have not got at the mo !

And as for replacing the EGR junk, I'd fit thishttp://www.irbdevelopments.com/EGR_TD5.html over the one you mention - as it comes with a new vacuum hose, rather than a soppy little rubber plug to blank off the T-piece in the existing hose.

[ragerover]

running 265/75/16 mt`S TOO BUT THEY WERE ON THE OLD 200 TDI I SUPPOSE ILL HAVE TO TRY AND FIND SOME ONE LOCAL WITH AN ECU TO SWAP OR AN INDIPENDANT DEALER WITH  THE FACILLITY`S TO CHECK FOR FAULTS
ANY MORE SUGGESTIONS KEEP EM COMIN
CHEERS

[Jimbo]

Martin,

Is yours a hardtop or station wagon - do you know what it was used for in it's previous life, is it ex-utility company or anything ?

[ragerover]

yep its a hard top  both owners have been private individuals so i think itll be standard gearing

[Porny]

running 265/75/16 mt`S TOO BUT THEY WERE ON THE OLD 200 TDI I SUPPOSE ILL HAVE TO TRY AND FIND SOME ONE LOCAL WITH AN ECU TO SWAP OR AN INDIPENDANT DEALER WITH  THE FACILLITY`S TO CHECK FOR FAULTS
ANY MORE SUGGESTIONS KEEP EM COMIN
CHEERS

You can't just swap ECU's on a Td5 - the engine ECU is matched to the alarm 10AS ECU, so if you swap ECU's you need to swap them as a pair unless you have diagnostic kit (the 10AS is the green box screwed to the bulkhead behind the clock panel)


Ian

[ragerover]

running 265/75/16 mt`S TOO BUT THEY WERE ON THE OLD 200 TDI I SUPPOSE ILL HAVE TO TRY AND FIND SOME ONE LOCAL WITH AN ECU TO SWAP OR AN INDIPENDANT DEALER WITH  THE FACILLITY`S TO CHECK FOR FAULTS
ANY MORE SUGGESTIONS KEEP EM COMIN
CHEERS

You can't just swap ECU's on a Td5 - the engine ECU is matched to the alarm 10AS ECU, so if you swap ECU's you need to swap them as a pair unless you have diagnostic kit (the 10AS is the green box screwed to the bulkhead behind the clock panel)


Ian

mmm im confused now
 i saw the green box when i wired in the imobiliser but mine hasnt got an alarm
its a 2000 but i think it was the change over model as its got the original type dash (same as 200 / 300 tdi) , new clocks but windy windows also the key is the standard looking type  ie the same as my 200tdi
also heres a thing where the ecu sits is a blue multi plug with a blanking cap on, and in the fuse box is a green multi plug which is not connected to any thing

help

[Jimbo]

Martin,

It would be easier for you to find someone with some diagnostic kit (Rovacom or Nanocom) and get them to check the live data info. If you swap the ECU, you'll need to read the injector codes off your existing ECU and write them onto the new (or loan) ECU - as well as coding your 10AS to the new ECU. It is possible (using diag tools) to disable the factory alarm - mine has a factory alarm/immobiliser (as well as other security 'items'  ;)), but no central locking, and I have windup windows too !

[L90OOK]

Hmmm...sounds like you are running D2 High Range Gears &/or large tyres.  :-k

Large tyres yes (well, only 265/75/16's), surely the D2 high range Tbox would give a higher top speed -

Not if you haven't got enough power to turn the wheels...like trying to pedal a bike in top gear everywhere sometimes you physically can't  :D

[Jimbo]

Not if you haven't got enough power to turn the wheels...like trying to pedal a bike in top gear everywhere sometimes you physically can't  :D

But we have power - up to about 60mph anyway  :roll:.................at what point do wheels become too 'big', and need gear ratios swapping ?

IIRC, my wheel/tyre setup is a factory option - so it should be ok with the stock gearing ?

[richo]

Hmmm...sounds like you are running D2 High Range Gears &/or large tyres.  :-k
Bin the EGR & fit THIS
Also straight through mid pipe will help & sounds wonderful  :lol:
I fitted a Dastek chip to my Td5 & wow  :shock: what a difference that

If you fit one of these will the ecu have to be altered

[L90OOK]

Hmmm...sounds like you are running D2 High Range Gears &/or large tyres.  :-k
Bin the EGR & fit THIS
Also straight through mid pipe will help & sounds wonderful  :lol:
I fitted a Dastek chip to my Td5 & wow  :shock: what a difference that

If you fit one of these will the ecu have to be altered

No it's a piggy-back chip so original ecu stays in place...take 2mins to fit  :dance:.  Look at Dastek website & contact Xtremeteam as he works for Dastek.

[richo]

I also find that when you hit 65 to70 the engine seems to have to work really hard to go faster.
I have had 85mph out of the old girl but its noisey.
I would like a upgrade but don't really know where to start.And of course thers the money side of things.
Is it just that the defender td5 is just slow anyway

[L90OOK]

No...the td5 has to rev hard to get 85 which is why allot of people have Disco 2 high range gearing put in the transfer box.  This makes cruising at 80 allot more pleasant.  However I would combine the chip upgrade & gearing...the gearing upgrade walone will make the vehicle feel even more sluggish.

[Dixie]

Man, I read this post last week and now mine is flat as a pancake. Is it contagious?!  :|

The engine is feeling lifeless on acceleration.

The engine was reconned 45k ago but since the rebuild it has never had the same performance. Before I was happy at 70 - 75mph and now I hardly get 65mph out if it.

After acceleration when I start to level off it almost feels like I am starting to apply the handbrake a smidgeon. Like it's hitting a flat spot in the middle.

Does this sound like the injector pump? The performance has dropped even more over the last week and I am really hoping I won't have fork out cash I don't have for it to be reconditioned.

[vtrdaz]

MAF sensor playing up? - try disconnecting it and see if it gets any better.

Darren

[Jimbo]

Does this sound like the injector pump? The performance has dropped even more over the last week and I am really hoping I won't have fork out cash I don't have for it to be reconditioned.

Td5 doesnt have an injector pump as such - just one huge in-tank pump............and AFAIK, they can't be re-conned, you have to fork out major loads of beer tokens for a new one  :(

Get the truck on some diags kit, you need to see about 4 bar of fuel pressure at the engine - there's also a fuel pressure regulator on the o/s of the engine, these can leak..........this may be the cause of my problems (it's certainly the cause of the smell of diesel, and puddle on my drive  :roll:)

[Dixie]

Sorry, should have said - mine's a 200tdi but seems to have the same symptoms.

[L90OOK]

Sorry, should have said - mine's a 200tdi but seems to have the same symptoms.

Check the intercooler hoses for splits & delamination

[richo]

Have a look on td5alive .com .
For about £464 you can have your td5s ecu remapped and get 30 to 40 bhp more and more importantly better torc in the low down rev range.
I im thinking hard about having this done.These guys at td5 alive seem to know what there talking about.
Has anyone had the defender remapped by these guys if so how did you get on with it?

[Porny]

Have a look on td5alive .com .
For about £464 you can have your td5s ecu remapped and get 30 to 40 bhp more and more importantly better torc in the low down rev range.
I im thinking hard about having this done.These guys at td5 alive seem to know what there talking about.
Has anyone had the defender remapped by these guys if so how did you get on with it?

Blatent spam   ;)


But I can do it for less - and you get a forum discount....


Ian

[dogwood]

GOT A TD5  no problem up to 60 but with 235/85 start to struggle speed 67 gps speed 72
had directional machos on previously  marginally better would show 75
ran them on a/t 235/75  shot up to 75 no prob,
but it is an aerodynamic brick plus the weight of the rollcage doesn't help, also had to change from a safari snorkal to another type so have lost a bit of air pressure

[richo]

Have a look on td5alive .com .
For about £464 you can have your td5s ecu remapped and get 30 to 40 bhp more and more importantly better torc in the low down rev range.
I im thinking hard about having this done.These guys at td5 alive seem to know what there talking about.
Has anyone had the defender remapped by these guys if so how did you get on with it?

Blatent spam   ;)


But I can do it for less - and you get a forum discount....

[So what your saying is that i'm putting spam on this forum just because i meation a company.I saw this firm at Landroverfest last year and after talking to them and watching the main arena show i liked what i saw and thet seemed to know there onions when it came to td5 engines.
If you had had a stand there i would of talked to you to but you did'nt so there for i don't know you and so your spam comment means nothing.
Unless of course it was just a bit of fun which i'm sure it was :dance:

[Porny]

So what your saying is that i'm putting spam on this forum just because i meation a company.I saw this firm at Landroverfest last year and after talking to them and watching the main arena show i liked what i saw and thet seemed to know there onions when it came to td5 engines.
If you had had a stand there i would of talked to you to but you did'nt so there for i don't know you and so your spam comment means nothing.
Unless of course it was just a bit of fun which i'm sure it was :dance:

Richo....

Not at all.

The spam bit related to me, nothing to do with you mentioning td5 alive....

It was me doing the spamming - mentioning that I can tune Td5 for less  ;)


Ian

[Xtremeteam]

wouldnt be so keen on a Td5alive tune

only the vehicles running the dastek upgrade didnt have any issues at peterborough, the others were smoking a bit & hitting boost cut

they may talk the talk but i wouldnt say they were the berrys,
all the figures?
they claim it & dastek prove it

[Wolfie]

Please don't use trademarks or trademarked images when mentioning spam it upsets people http://www.spam.com/legal/spam/

Have made changes to posts accordingly.