freelander TD4 slowing down

[karen]

My 05 TD4 seems to slow down then run normally sometimes won't pull away and I
have to drop clutch and bring back up to the bite and it moves as normal. No
code showing initially then major power loss and engine management lights came
on showing fuel problem. Had the fuel pump and fuel filter changed, fixed
major failure but not intermittent power loss mechanic at a loss as to why
it's not all fixed no other codes showing, roundabouts and hills seem to cause
most power issues only freelander I know of that's happy to do 30 in fifth
gear 45_55 seems to be the most usual speed for slowing down unless on
roundabout only other thing I noticed is that I can lose a quarter of a tank
whilst driving then find it again after levelling out fuel guage seems to move
independently can anyone help

[Dave Liquorice]

Post by karen
only other thing I noticed is that I can lose a quarter of a tank
whilst driving then find it again after levelling out fuel guage seems
to move independently

That amount of variation in fuel level strikes me as odd unless you
have some seriously steep inclines or angles for a significant length
of time.

Does the engine management share the same fuel level signal? One
straw to clutch at is that it's going into a "eco" or "limp home"
mode when it thinks it has no fuel left. I'd expect that to be logged
though.

[Lee_D]

Post by Dave Liquorice

Post by karen
only other thing I noticed is that I can lose a quarter of a tank
whilst driving then find it again after levelling out fuel guage seems
to move independently

That amount of variation in fuel level strikes me as odd unless you
have some seriously steep inclines or angles for a significant length
of time.
Does the engine management share the same fuel level signal? One
straw to clutch at is that it's going into a "eco" or "limp home"
mode when it thinks it has no fuel left. I'd expect that to be logged
though.
--
Cheers
Dave.

I wonder does it smell of Diesel around the front left hand are of the engine as you look in the engine bay? This is the area of the Pump and on ours we had leaking seals a coulpe of years back. Can be temperature dependant and felt sluggish. no massive leak but a slight weap of fuel on the pump. I suspect that it was drawing air in to the mix rather than leaking fuel out. It cost us around £400 to have fixed which also included having the seats of the affected area reformed / reground as these are also prone to aggravating future failures if not sorted. It may not be this but worth considering. Other things I'd check are the fuel line and filter. Similar symptoms many years back when a RR Classic Diesel sucked air in a corroded perforated fuel pipe pick up from the tank. Again not bad enough to leak fluid out but sufficient to cause air to be drawn in. It also allowed fuel to syphon back in to the tank when parked identifiable by prolonged cranking to start from cold or if parked over night.

[karen]

Post by Lee_D
I wonder does it smell of Diesel around the front left hand are of the engi
ne as you look in the engine bay? This is the area of the Pump and on ours
we had leaking seals a coulpe of years back. Can be temperature dependant a
nd felt sluggish. no massive leak but a slight weap of fuel on the pump. I
suspect that it was drawing air in to the mix rather than leaking fuel out.
It cost us around £400 to have fixed which also included having the seat
s of the affected area reformed / reground as these are also prone to aggra
vating future failures if not sorted. It may not be this but worth consider
ing. Other things I'd check are the fuel line and filter. Similar symptoms
many years back when a RR Classic Diesel sucked air in a corroded perforate
d fuel pipe pick up from the tank. Again not bad enough to leak fluid out b
ut sufficient to cause air to be drawn in. It also allowed fuel to syphon b
ack in to the tank when parked identifiable by prolonged cranking to start
from cold or if parked over night.

Thanks guys had new fuel filter and pump, cleaned the Mac sensor turbo checked
out OK no smell of deisal anywhere slight improvement on cleaning the sensor
but not completely resolved