Hi all, I have some useful info. This only applies to 300TDIs with electronic pump
My wife has an Auto 300 TDI which has the electronic pump and hence is fly by wire. When we got it, it took a bit of cranking to start from cold and gave a little white smoke. I tweeked the timing and it started perfect. Unfortunately this highlighted an intermittant engine check light as the increased power obviously gave a different rest postion for a given speed. This gradually got worse and we got hesitation and fluffing at crusing speed. This seemed to be due to worn TPS(throttle position sensor) as it only happened at a particular pedal position, it's done 170K. This is where the story gets interesting. Took the sensor out which is fiddly to say the least. It's made by Bosch. I phoned Landrover, £690 +vat!!!!! I then phoned some Bosch agents found on the Bosch website. My local one quoted me £170 +vat. I ordered it and fitted today. Everything is fine now. I didn't tell them how much Landrover were charging for obvious reasons!! Tried surfing for the number below without luck apart from a couple of sites in a foreign language. If you disconnect the connector in the engine bay the engine check light will light and revs will rise to 1200. I think this is classed as limp home mode. Only problem there is it's only later 300 auto that have the electronic pump so the box probably won't get out of first!!
The Bosch part number is 0 205 001 021.

Interesting to say the least. Landrover always have known how to charge!

could you tell me the location of the sensor is it on the pedal or the pump, would be gratefull as mine has started todo this exact problem, many thanks

Another part of the glorious EDC system.....much nicer than getting the pump recon'd, which is the advice I have had on occassion for this problem.

I have the cold start problem which I had put down to an EDC fault....but replacing the coolant temp sensor that normally solves this didnt work.

Just recently the 98 auto has lost the kickdown function.....so it may well be this throttle position sensor.So,as above,where is it?

Wow, didn't think I would get a response from this post 4 years later!!!

The throttle position sensor is located on the pedal assembly.

It is possible to get set up wrong as the alignment is variable. It has a splined shaft very similar to a windscreen wiper shaft.

It is fiddly to do. You need at least 3 arms and be able to bend in half.

With regard to the kickdown problem that will more likely be a cable adjustment problem or gearbox, sounds silly but don't rule out a mat riding up under the accelerator and restricting travel.

regards
Carl

Thanks mate,the power of the internet,eh?

thanks mate ,have phoned around numerous bosch agents and diesel specialists seams they don't make this sensor any more so i decided to live with it once again thanks for the reply

from the description on the 1st post...it seems my disco is doing similar thing now.....it's a 97' 300tdi auto with EDC by the way.....

Symptoms (1):

- acceleration (foot down on loud pedal): fine
- deceleration (foot away on loud pedal) : fine
- cruising (foot on loud pedal lightly) : engine chutters, check engine light comes up...but as soon as pedal is pressed down again....runs fine

Symptoms (2):

- On 'park' or 'neutral', engine revs to 2000 by itself occasionally without the loud pedal being depressed. It will rev at 2000 for a while, and goes back down to 1500, then back up to 2000. Sometimes, it even goes up to 3000 or 3500.
- it happens whenever she likes.....much like my wife's mood swing....
- switch engine off...let it cool down a little...and it's back to normal again........

Can anyone tell what's happening here????

I had the very same problems with my vehicle found second hand sensor for £50 which sorted the issues striaght away

Instead of replacing the throttle position sensor, I replaced the electronic injection pump to the mechanical one....effectively getting rid of the ECU/EDC system...and the disco drives so much better now...with a tweeked pump anorl...!!!