D

D.G.F.S.

Active Member
G’day

I have a ex utility 110td5 which doesn’t like to move after being parked facing up hill for a short while. It starts ok but when pulling away it wants to stall, no power being delivered from the engine whatsoever. After 30 seconds it springs back to life and runs fine. No odd pump noises either. Occasionally when warm the engine is a bit rough to start, takes a few turns. I have done injector seals and washers, fuel filter, injector loom and cps. No oil in red plug.

Any suggestions as it’s annoying me now

Thanks folks

Ben
 
Sounds like a fuel/air issue. There may be a small air leak into the system aided by gravity. [ fuel trying to run back into tank sucks air in ] The most likely place is the fuel filter. You may think you would see fuel escaping some where but it may not or be so little as to be hard to spot.
 
Thanks for your reply tottot. I haven’t noticed any obvious damp spots but I’ll go through the connections and clean/check them anyway. That was my thought, fuel leaking back to the tank but as I’m not yet familiar with the Td5 I am a bit stumped where to start. Do you know much about the so called non return valve and air bleed valve in the filter head? I have been reading post after post trying to find a similar problem to mine and the only thing occasionally coming up is relating to the two valves in the filter head.
 
Sorry DGFS but my knowledge of the td5 fuel system is limited. However I do know that if non return valves are failing or are fitted in the wrong place then you get the problem described. Online diagram of TD5 system may help.
 
Yeah it’s there and fitted. Like I said, the problem with no power is most noticeable after parking and switching off facing up hill. Only have to be stopped a few mins before it plays up. I can have the handbrake on, out of gear and foot flat to the floor on acc pedal and it burbles and splutters slowly for a few seconds and eventually builds to full rpm then runs fine again.
 
It actually sounds like fuel starvation but cant understand why only when facing uphill, other possibilities are muck in the tank has pulled onto the pump strainers restricting it, or the fuel pressure regulator is acting up, do you have any sign of diesel running down the back of the engine on the drivers side?
 
I too believe it’s some kind of starvation, almost like fuel draining back.
I’ve not noticed it too much facing down hill as by the time I need to apply power the engine would have sorted itself out. I had a poke around the regulator this morning, I couldn’t see any diesel and I got my hand under and around it and there was no sign/smell of fuel on my hand. It was first thing in the morn tho and I hadn’t ran it for long so it could leak when driving perhaps.
 
Disconnected the maf, problem still there plus the Landy is generally more sluggish with it disconnected now
 
And turns out it happens all the time, level or hill I just hadn’t noticed. It’s like fuel is draining back from the head or losing fuel pressure after being stood a short while
 
Yes you need to try another one to sort that, unplugging it can give the same signal as a duff one which causes that issue, if you let it idle for a minute after starting without touching the accelerator does this problem still exist?
 
Discodevon said:
Yes you need to try another one to sort that, unplugging it can give the same signal as a duff one which causes that issue, if you let it idle for a minute after starting without touching the accelerator does this problem still exist?
Click to expand...
Thanks for your reply mate, I'm going out again later so I’ll see what it does and report back
 
Just been out, sat for a couple of mins at idle the put foot to the floor and the revs picked up instantly as it should... so it’s looking like maf at the moment then?
 
Bit of an update, cleaned maf and map sensors as a temporary solution. No change. Put foot flat to the floor, revs picked up slightly then screams into life like someone flicked a switch and full power is restored then runs fine until I turn it off for 15 mins then problem happens again. Chap said to me tonight could be throttle pedal playing up....
 
Wimblowdriver said:
Is it fitted with a throttle position sensor - which could well be playing up? Time to put a diagnostic tool on and get to the bottom of the problem.
Click to expand...
Yeah it does. I did notice a dribble of water on it tonight from the standard defender leak so perhaps this has got into the pointmeter.
I did have it plugged in a few weeks back and two faults were present, one being noisy crank signal. I swapped the CPS with a genuine one and checked the wiring, and second fault was throttle out of parameters. That was cleared but neither made a difference to running.
It’s blagging my head how it starts fine but then has very laboured/limited throttle response for a few seconds then it picks up instantly to full chat and runs fine until being turned off and left for a bit then does it again.
 
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