P38 Won't go up Hills.....

AP90 · Oct 20, 2013

Hi Everyone

I have a 2001 P38 2.5 Diesel that won't climb hills and really struggles on long inclines

My local garage cleared a gearbox fault which helped to some degree but the car is tricky to drive because of the lack of power

It has had the viscous coupling replaced and has been serviced about 500 miles ago by me

The engine feels disconnected to the car somehow.......

Any suggestions

Many thanks

Ash

Datatek · Oct 20, 2013

Diagnostics needed really but check the pipe from the manifold to the MAP sensor on the fuel filter housing is connected and not perished/blocked. After that, check turbo hoses for de-lamination, remove and clean the intercooler, and EGR valve.
You do know that the accelerator has a very strange travel? It needs to be floored as all the action is in the last 25% of movement.

AP90 · Oct 20, 2013

Hi Datatek

Thank you for the information, I have tried to take it to diagnostics but the guys are always busy and no that interested I am in North London, is there any recommendations for a specialist in my area.

Where is the egr valve located? I have cleaned out the intercooler and checked all hoses, the only thing I haven't checked is the fuel filter.

I think it goes beyond the throttle feel as I had my foot to the floor and the car was still losing speed.

Thanks again

Ash

Datatek · Oct 20, 2013

AP90 said:
Hi Datatek

Thank you for the information, I have tried to take it to diagnostics but the guys are always busy and no that interested I am in North London, is there any recommendations for a specialist in my area.

Where is the egr valve located? I have cleaned out the intercooler and checked all hoses, the only thing I haven't checked is the fuel filter.

I think it goes beyond the throttle feel as I had my foot to the floor and the car was still losing speed.

Thanks again

Ash

The EGR is on the front of the inlet manifold. Map sensor is a common problem. Buy yourself a Nano com and do you're own diagnostics.

StuckAgainSteve · Oct 20, 2013

Where roughly in North London? I might be able to find time to plug my Lynx in for you.

ScotsJamie · Oct 20, 2013

I know this is probably not the issue but... I had exactly the same issue, was a vac hose that has become disconnected, mech fixed and voilà, still not the most powerful car I have driver but 50% better

Saint.V8 · Oct 20, 2013

+1 to the map sensor pipe either split or detached...

Datatek · Oct 20, 2013

ScotsJamie said:
I know this is probably not the issue but... I had exactly the same issue, was a vac hose that has become disconnected, mech fixed and voilà, still not the most powerful car I have driver but 50% better

That would be the MAP sensor pipe I mentioned and it's not vacuum but pressure.

AP90 · Oct 20, 2013

Thanks for the tips everyone

Steve, I am in Mill Hill NW7 I am happy to come over to you.

Jamie where was the VAC hose located, I have been over the car and can't seem to find any missing bits, also the boys from Cranfield Garage gave it a good looking over.

Where is the MAP located

Thanks again, it would be really good to get this sorted much appreciated

Ash

StuckAgainSteve · Oct 20, 2013

We could meet half way near a nice big hill - I can think of a perfect location - I shall PM you.

the_wolf · Oct 20, 2013

I notice no ones mentioned it yet but what colour is it? It's long been known that red Land Rovers won't go up hills. It used to be believed that this only apply to Defenders but seems to be across the board. Something to do with the molecular structure of the paint adversely affecting the aerodynamics of the vehicle

Datatek · Oct 20, 2013

AP90 said:
Thanks for the tips everyone

Steve, I am in Mill Hill NW7 I am happy to come over to you.

Jamie where was the VAC hose located, I have been over the car and can't seem to find any missing bits, also the boys from Cranfield Garage gave it a good looking over.

Where is the MAP located

Thanks again, it would be really good to get this sorted much appreciated

Ash

As I said earlier, on the fuel filter housing, it's at the top front.

Datatek · Oct 20, 2013

the_wolf said:
I notice no ones mentioned it yet but what colour is it? It's long been known that red Land Rovers won't go up hills. It used to be believed that this only apply to Defenders but seems to be across the board. Something to do with the molecular structure of the paint adversely affecting the aerodynamics of the vehicle

Do you also post as "myfirstl322" same quality of answers.

the_wolf · Oct 20, 2013

Datatek said:
Do you also post as "myfirstl322" same quality of answers.

Nope, I've never had a range rover but I do have a sense of humour

Datatek · Oct 20, 2013

the_wolf said:
Nope, I've never had a range rover but I do have a sense of humour

Must be a Scottish thing

Druim · Oct 20, 2013

Datatek said:
Must be a Scottish thing

Yours Red by any chance?

Datatek · Oct 20, 2013

Druim said:
Yours Red by any chance?

Nope.

AP90 · Oct 20, 2013

That does rule out one symptom....... my P38 is Black `phew!

StuckAgainSteve · Oct 20, 2013

Druim said:
Yours Red by any chance?

My extremely reliable P38 is red.

Grit Valve · Oct 20, 2013

As data has suggested the small black pipe runs from the top of the filter housing to the black plastic air manifold opposite cylinder 4/5 its located underneath . One end should still be attached at least , take a look

P38 Won't go up Hills.....

Active Member

Well-Known Member

Active Member

Well-Known Member

Well-Known Member

New Member

Dyed-in-the-wool 100% RR Junkie

Well-Known Member

Active Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Well-Known Member

Active Member

Well-Known Member

2000 4.6 Vouge

Similar threads