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geobloke

Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4410

balmybaldwin wrote:
Can you be more specific with your symptoms? When this occured do you lose power to the extent it won't go beyond idle or is it more like a "Limp mode" that responds to the accelerator, but not very well?

I'm getting the latter symptom particularly on a long hill where the car responds normally until suddenly it doesn't (feels like a limp mode and then can't maintain more than about 60mph. As far as I can tell this is not pedal related as my numbers look normal on the nanocom. I'm yet to look at the wastegate, but a new MAF didn't fix it (old one was def faulty).

Sounds like it is over-boosting. Either sticky waste gate or incorrectly adjusted. Do you have a boost gauge?

3rd Apr 2024 6:29pm

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

2002 Defender 90 Td5 CSW Buckingham Blue

No, but I have a nanocom, just starting to look at logs now

3rd Apr 2024 7:16pm

Phil68

Member Since: 30 Jun 2023
Location: Accrington
Posts: 11

Just a note that my 'driver demand' fault did not appear straight away. I went looking somewhere else before it appeared in the nanocom.

3rd Apr 2024 7:24pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1674

It can be logged sometimes if someone messes with the pedal or pumps it like a looney.

4th Apr 2024 12:16am

balmybaldwin

Member Since: 17 Apr 2021
Location: Surrey
Posts: 192

geobloke wrote:
balmybaldwin wrote:
Can you be more specific with your symptoms? When this occured do you lose power to the extent it won't go beyond idle or is it more like a "Limp mode" that responds to the accelerator, but not very well?

I'm getting the latter symptom particularly on a long hill where the car responds normally until suddenly it doesn't (feels like a limp mode and then can't maintain more than about 60mph. As far as I can tell this is not pedal related as my numbers look normal on the nanocom. I'm yet to look at the wastegate, but a new MAF didn't fix it (old one was def faulty).

Sounds like it is over-boosting. Either sticky waste gate or incorrectly adjusted. Do you have a boost gauge?

It seems it was, and the cause the waste gate. It built up to 1.33 bar, then drops and wont recover above 1.03 bar until stopped and restarted.

Taken the heatshield off this afternoon and waste gate was almost completely solid. now loosened up and the problem seems to have gone.

4th Apr 2024 5:05pm

flatfrog

Member Since: 04 Mar 2018
Location: East Yorkshire
Posts: 5

Hi, this may be the same problem - driver demand not responding BUT when started with pedal pressed down it revs like crazy and continues to respond until its allowed to idle, then yellow engine light comes on and stops responding. Is this likley to be the loom or something else - any thoughts? Thanks, Mike

15th Dec 2024 10:08pm

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