Loss of power going uphill

D

Dylan Lewis

Member

Posts

29

Location

port talbot

• Oct 26, 2019

• #1

Hello you knowledgeable lot.
I have a 2003 discovery 2.
Last weekend it started to judder and there was a severe loss of power, But before I got home the juddering stop and power up to about 2500 revs came back. It travels about town ok but hills an motorways are a struggle. I have checked the red plug and the ecm for oil. None in the ecm a bit in the loom plug.
Anyone with any ideas before getting it pluged in?

 

sierrafery

Well-Known Member

Posts

17,870

Location

Arad/Romania

• Oct 26, 2019

• #2

Hi, describe better, when you go uphill it goes well up to 2500 rpm then it looses power or kangarooing or how? ...anyway first of all make a drive test with MAF unplugged... also do you have EGR still on?

 

D

Dylan Lewis

Member

Posts

29

Location

port talbot

• Oct 26, 2019

• #3

It goes well on the flat and about town,
motorways and uphill it seems to stuggle the when the injection loom was faulty.
Egr is gone. I unplugged the maf last week when it started and I thought It was worse. I will try and test it tomorrow.
Fuel filter change has been done today.

 

sierrafery

Well-Known Member

Posts

17,870

Location

Arad/Romania

• Oct 26, 2019

• #4

Try with fuse F2 engine bay removed and check the wastegate to not be stuck

 

D

Dylan Lewis

Member

Posts

29

Location

port talbot

• Oct 26, 2019

• #5

sierrafery said:

Try with fuse F2 engine bay removed and check the wastegate to not be stuck

Click to expand...

Waste gate is not stuck
I’ll try the fuse tomorrow.

 

sierrafery

Well-Known Member

Posts

17,870

Location

Arad/Romania

• Oct 26, 2019

• #6

If these are ruled out it's possible that the fuel pump's HP stage is dead but to check that you need to insert a gauge into the FPR instead of the sensor

 

D

Dylan Lewis

Member

Posts

29

Location

port talbot

• Oct 27, 2019

• #7

sierrafery said:

If these are ruled out it's possible that the fuel pump's HP stage is dead but to check that you need to insert a gauge into the FPR instead of the sensor

Click to expand...

Will a nanocom do the same?

 

sierrafery

Well-Known Member

Posts

17,870

Location

Arad/Romania

• Oct 27, 2019

• #8

The fuel pressure is not covered by the diagnostic protocol

 

D

Dylan Lewis

Member

Posts

29

Location

port talbot

• Oct 27, 2019

• #9

Found this in a td5 forum and just asking
wouldn’t it start without the high pressure running?
Is there not a high pressure reading from from the regulator

 

Last edited: Oct 27, 2019

JLGALL1

Member

Posts

35

Location

Scotland

• Oct 27, 2019

• #10

Wastegate modulator?

 

Pos110

Member

Posts

21

Location

South Staffordshire

• Oct 27, 2019

• #11

If you have access to nanocom, then post a few plots... it won’t help with fuel pressure as there is no fuel pressure sensor, but you can see if it’s a boost issue - you might just be hitting overboost at high load.