2.0L TD4 2002 Losing Power

[purplegerbil]

Hi,
I have Freelander 2.0l TD4 2002. With general driving, setting off at light, round-abouts etc it is great. When going up hill the problem starts. When the revs hit 3000 it loses power. The revs stay high but the car slows down. The engine doesnt cut out just no power. Somebody told me it could the fuel filter. Changed it then went for a run. Same problem as before.

Any help with this would be great.

Cheers.

[thermidorthelobster]

The revs stay high but the car slows down?

In that case it has to be a transmission issue.

Auto or manual?  If it's a manual then the clutch is the obvious place to look, or if it's an auto then it could be a number of things.

[purplegerbil]

Its a manual.
It only happens when driving up hill. Get on to the flat and the power is back.

[thermidorthelobster]

Uphill = more load on the transmission.  This may be causing the clutch to slip.

In a manual transmission, there is a direct mechanical link between the engine and the wheels.  The only way the engine can be maintaining its revs, and the wheel speed slowing down, is if something is slipping.

I can't see how it can be anything other than the clutch, because the viscous coupling only drives the rear wheels IIRC.

[G30RGE]

Could be MAF sensor/Tuning related

check here for some good tuning info.

[thermidorthelobster]

Could be MAF sensor/Tuning related

That could easily cause the engine to run badly (as could many other things), but it's not going to explain how the engine is running at the same revs, but the rest of the vehicle is slowing down.

[purplegerbil]

Thanks for the replys.

I don't know much about engines. Give me the inside of a computer anyday.

Are we talking expensive??

[thermidorthelobster]

Well, if it IS the clutch, then no, probably not expensive.  You could test it out a bit by finding a nice safe place, putting on the handbrake, putting your foot hard on the footbrake, and letting the clutch out gently whilst giving it a bit of welly.  You'll need 3 feet to do this properly :)

If it doesn't stall or move then there's a problem with the clutch.  Don't do it for long or there really WILL be a problem with the clutch.

Are you SURE the engine revs are staying at the same speed, but the rest of the car is slowing down?

I'm surprised not more people have commented on this thread, there may be something I've overlooked, this is just mho.

[pondy653]

Check out my post about half way down this page http://www.landyzone.co.uk/lz/f9/td4-power-loss-when-pulling-away-23216-10.html .  My 51 plate was exactly the same as you have described. found the above thread spent £30+vat at the main dealers, 1/2 an hour of my time and i now have a TD4 that regularly sees 3 figures on the speedo (confirmed by gps).

All you need is a 10mm socket. if you want a photo let me know.
Good luck

Tony

[carbore]

Hello,

I would go with the clutch hypothesis.  If the revs are there then the engine would seem to be ok, but the clutch is spinning away the power.

There is an article in this months Land Rover owner about a guy who gets his TD4 upgraded and finds out the airflow meter is kaput.  It says you can run with the airflow meter disconnected and if it runs a bit better then its duff.  I still think its the clutch on the way out though......

[3laner]

sounds like what happened to mine, replaced fuel pump and MAF sensor seems ok now!

[freelanderpx54]

My Td4 was having problems with gear changing / and lack of power when setting off (sometimes stalling - even with plenty of revs) Dealer replaced clutch plate and assembly under warranty. However, the problem seems to be coming back. Only done a few hundred miles since the clutch change. hopefully I won't have to go back.