TD5 Power Loss

[drum]

I'm having a an intermittent problem with the 110, (2004 TD5) it drives fine, except for one thing, and it doesn't always misbehave, but it is getting more frequent.

If I drive over a certain rpm (I don't have a rev counter so can't tell exactly what it is) the engine cuts all power and just sits at those revs. In 3rd it is 30mph, in 4th 40mph and 5th 50mph only roughly. If I approach these sppeds gradually, I can get slightly furth but as soon as it "retards" it goes back to these speeds.

I'm wondering about turbo??

anybody any ideas??

[littlepow]

Might be going into limp home mode. As that is a new Defender trick.

[drum]

How can I figure out what is triggering it??

[Bush Tucker Man]

(I don't have a rev counter so can't tell exactly what it is) the engine cuts all power and just sits at those revs. In 3rd it is 30mph, in 4th 40mph and 5th 50mph only roughly.

Without going out & driving it Ican't tell you about 3rd & 4th, but 2000RPM in 5th equates to about 50mph in mine.

But.... with the diameter of your tyres????

[landraver]

Sounds like an electronics problem. Take it back to the dealer. If its a 2004 it should be still under warranty.

[Skywalker]

What's the temperature gauge saying when it "misbehaves"  

Dave

[kevbutty]

Sounds like a throttle pedal fault to me  :idea: or maybe the wiring between that and the ECU.

[smo]

ECU will log the fault codes, if it going into "limp-home-mode" then it should show up on a testbook @ a dealer, and being under warranty unless its self inflicted it should be covered too :)

[Xtremeteam]

place bets on headgasket going & ecu sensing it OR oil in the injector loom tyhat has traked back to the ecu & the ecu will have engine oil in it  :lol:

[smo]

It was only the really really early TD5's that suffered the oil in loom problem, and not even all of them suffered.

I've nto herd of anything post 2000/2001 having loom problems :)

[Xtremeteam]

It was only the really really early TD5's that suffered the oil in loom problem, and not even all of them suffered.

I've nto herd of anything post 2000/2001 having loom problems :)

not gonna argue with you but i know that any td5 is a potention oil in the loom candidate

[Skywalker]

My TD5 currently won't cruise much above 50mph when warm cos' the temperature gauge shoots into the red and the power dies, it's only momentary and I presume it's the engine managment system cutting in to stop any damage from overheating.

I'm pretty sure it's because of all the crap n' mud still in the radiator fins that's the cause ...................  now mater how much I jet wash it can't seem to get the back clean ...........  looks like it's gonna have to come off and have a soak in the bath  8) .....So that mean's waiting for a weekend whem the Mrs is at work and hopefully it ain't poring down  :roll:

I suspect Drum's problem's a little different cos' we've talked about this before, he did suffer a similar thing a while back but that proved to be an airlock.

Hope it ain't the Head Gasket matey  :shock:  ................  i'll clean mi' spanners just in case  

Dave

[drum]

Temperature guage is stable, I've had the airlock problem before. and solved it.

Checked the turbo actuator today, and that looks alright. I believe there is a flywheel sensor in the bellhousing that can be a problem so that will be next on my list.

Only problem with taking it to a stealer is if it is self inflicted they charge you nearly £100 to tell you to get stuffed!!! Had it done recently with a wheel bearing (Long story)  So really I want to know what the problem is, and if it is likely to be me that's caused it before I take it to them.

[vtrdaz]

to be sure you really need to get it on the diagnostics - i had a similar problem which ended up being the throttle pedal.

Do you have an independant that can check the diagnostics for you?

Darren

[drum]

I guessing a few of them can, but it all costs money, so I'd rather eliminate the obvious first.

[rollazuki]

not gonna argue with you but i know that any td5 is a potential oil in the loom candidate

So, Landys suffer from this as well as toyotas........

[Porny]

Other thing that can cause problems is the Air Flow meter on TD5's....

[drum]

Right I've checked the Wastegte, so I'll give the air-flow and flywheel sensors a good clean. Then the throttle (it does hve a habit of swimming does my 110).

Then after that I might have to actually pay someone.

[drum]

Flywheel Sensor looked fine, bit of crap on it but nothing metallic, and not too bad really.

Then came the air-flow sensor. Took it out, and it was caked. So I put the air cleaner on it, and it sort of disintergrated  :shock:  Think I might have found the problem   :lol:  :lol:  :lol:

Ohwell £66 Mail Order, I'll have a ring round tomorrow, see if I can find anything local tomorrow.

A short run out after I broke it, and it drives exactly the same with or without connected. And the problem hasn't changed at all.

[Skywalker]

Still probably cheaper than what the main stealers would charge just to look at it, least you seem to have found the problem though

Dave

[drum]

But is it THE problem. or just a problem  :?

[drum]

Runs a bit smoother I reckon, but didn't fix ought  :(  :(

Ohwell looks like I might buy myself an OBD reader.

[Porny]

Doh.... problem not fixed then

Just find a good independent specialist.... shouldn’t be that much for them to plug it into their computer....

Though in saying that, your own reader would be nice…:wink:


I keep thinking that I should buy my own Rovacom lite set-up!!!

[drum]

I looked at Rovacom Lite a few months back, but you're really looking a spending 1k+ to get a decent setup.   Stuff I'm thinking about are basic fault reader plug into a PocketPC, and allow you to reset faults, and read error codes.  Anybody any experience of them??

[LOFTY]

This might help, if your boost pressure from turbo is at the limit the sensor will allow, (14 psi i think), then under load your boost hits 14 psi, and the ECU say, "no" and cuts power down, it feels like you have lost 25% of your power.
Just adjusted the linkage on waste gate, so it cut in earlier, and all was ok.

As for Skywalkers problem, my TD5 use to suddenly go into the red, would run at normal all day, then wack into red, the stain on water bottle made it look like there was water in it, there wasnt, so when i topped it up, next time it hit red, it blew all water out of bottle. Turns out the head gasket had gone, but due to the position of gauge sender, you can run with a half empty radiator, and the temperature gauge will show normal, until combustion gases from head gasket blowing force some water upto sender, then it hits red in about 5 seconds.
I was lucky, only gasket gone, but the heads are common for cracking. :?

[drum]

Thanks lofty, but I don't think it's that, it more like a rev-limiter been hit.

I've just order a OBD reader thing for my PocketPC lets see what that tells me.

[Porny]

This might help, if your boost pressure from turbo is at the limit the sensor will allow, (14 psi i think), then under load your boost hits 14 psi, and the ECU say, "no" and cuts power down, it feels like you have lost 25% of your power.

This won't happen unless the boost pressure is above approx. 1.5 or 1.6 bar at ambient (21 - 23psi) ...  as this is the boost limit for a Td5.

Just adjusted the linkage on waste gate, so it cut in earlier, and all was ok.

So have you lengthend the rod and reduced the boost pressure, or shortened it and increased it???  The actuator does not effect when the turbo cuts in, just the pressure it is allowed to produce before the waste gate is allowed to open.


On a Defender anyway.... a Disco is slightly different.

[Porny]

I looked at Rovacom Lite a few months back, but you're really looking a spending 1k+ to get a decent setup.   Stuff I'm thinking about are basic fault reader plug into a PocketPC, and allow you to reset faults, and read error codes.  Anybody any experience of them??

Rovacom lite is only about £500 for just the Td5 sections.... plus the cost of the laptop.

[drum]

Think I might have included the price of a Laptop in the cost, still rather alot of money. I'm going to try a simple code reader for starters. I already have the pcoket pc for sat-nav so we'll se how we go with that.

[Porny]

Are you getting excessive smoke when the engine goes flat???

Or any diesel 'knock' noise??