Range Rover P38 Sluggish / no power

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Excuse me gentlemen, but what does this EGR look like, and what pipe should I unplug and block? Don't want to unplug and block the wrong hose - I understand having one's hoses fiddled with can hurt?? Not that I'd know ;)
I've had 3? Classic 3.5s, and this is my second diesel P38. So not a RR novice.
 
JanaFrances said:
Excuse me gentlemen, but what does this EGR look like, and what pipe should I unplug and block? Don't want to unplug and block the wrong hose - I understand having one's hoses fiddled with can hurt?? Not that I'd know ;)
I've had 3? Classic 3.5s, and this is my second diesel P38. So not a RR novice.
Click to expand...

What year is your car?
 
Hi first thing remove your post code from location a ruff area ill do.
Welcome to the forum you have come to the right place for help with a p38
if the motor is very slow they a bit sluggish as standard try pulling the small pipe of the map sensor bolted to the fuel filter and make sure its clear both ends, the other end fits on to a spigot under the inlet manifold check that as well ,drive car with it disconnected if there is no difference and pipe is clear and not split map sensor is shot, try that and report back.
If Wammers gives advice follow it.
 
brianp38dse said:
Hi first thing remove your post code from location a ruff area ill do.
Welcome to the forum you have come to the right place for help with a p38
if the motor is very slow they a bit sluggish as standard try pulling the small pipe of the map sensor bolted to the fuel filter and make sure its clear both ends, the other end fits on to a spigot under the inlet manifold check that as well ,drive car with it disconnected if there is no difference and pipe is clear and not split map sensor is shot, try that and report back.
If Wammers gives advice follow it.
Click to expand...

Not being stupid here, but what does a MAP sensor look like? Anyone got a photo with an arrow??
 
3C616B33-57A4-41B8-AD95-573FFE7E4E47.jpeg
By the fuel filter
 
JanaFrances said:
1999
Click to expand...

Then it does have EGR but disconnecting it will do nothing for power. But it will stop build up of crap in the EGR valve itself and the internals of the manifold and inlet tracts. EGR is the valve bolted to the front of the inlet manifold. It will need removing and cleaning out, then leave the rubber vacuum pipe off it and blank the pipe with a suitable screw. Look at MAP sensor and connections for lack of power.
 
wammers said:
Then it does have EGR but disconnecting it will do nothing for power. But it will stop build up of crap in the EGR valve itself and the internals of the manifold and inlet tracts. EGR is the valve bolted to the front of the inlet manifold. It will need removing and cleaning out then leave the rubber vacuum pipe off it and blank the pipe with a suitable screw.
Click to expand...

Ah OK, thanks. Problem is, he goes nicely when warmed up, and acceptably when cold, but I find that if a sudden steep slope presents itself, and I haven't given him a run-up, pressing the loud pedal has depressingly, embarassingly little effect :(
 
JanaFrances said:
Ah OK, thanks. Problem is, he goes nicely when warmed up, and acceptably when cold, but I find that if a sudden steep slope presents itself, and I haven't given him a run-up, pressing the loud pedal has depressingly, embarassingly little effect :(
Click to expand...

Lift pump may have failed or failing.
 
JanaFrances said:
Hmm, thing is, I used to run a P38 diesel in Europe, and I didn't expect fireworks, but this boy is a degree slower for sure.
Click to expand...
So it's flush the intercooler, check for leaks in the hoses, clean out the inlet manifold and EGR valve making sure the EGR valve closes properly, then as stated, block the rubber pipe to the EGR valve when putting it back.
Diagnostics would help checking the function of the MAP sensor and the boost level.
One quick check you can make is to unplug the MAF sensor (in the inlet hose from the air cleaner), a faulty MAF can do funny things. Check the air filter is clean. Check the in tank lift pump is working.
 
You must log in or register to reply here.

Similar threads

p38DH
P38A Diagnostic device
Replies
8
Views
2K
p38DH
p38DH
Landlover99
Luton Airport Fire Report Blames 3 Litre Diesel Range Rover
Replies
17
Views
653
Graculus
Graculus
B
L320 range rover sport 3.0 tdv6 loosing power steering fluid
Replies
3
Views
638
Mark Piercy
Mark Piercy
D
Range rover p38 dse none egr
Replies
8
Views
477
Grrrrrr
Grrrrrr
F
P38 DSE loss of power when driving
2
Replies
34
Views
2K
Tibo W
T
Back
Top