Hi All and a very happy new year!
I have been the owner of a DII (2001 GS) with EU5 TD5 since June 2016. Drove perfectly for about 6 months. Ever since it has suffered the common poor running issues. It does still have plenty of pull and cruises fine but at slower speeds and local roads it 'misses' and also hunts at idle. Sometimes it is so bad I have to dip the clutch when slowing to a stop to prevent it being so erratic that it really makes the vehicle judder.
I have done the following work with no success:
Genuine Injector Harness (no oil in red ecu plug)
Injector Seals (copper washers and rubber o rings) (double checked injector set ups)
All new sensors (Genuine) (AAP, MAF, MAP, Crank, Coolant and Fuel Temp)
Genuine Fuel Pump and Fuel Filter Housing with new filter and new valves (Non return and Air Bleed)
Fuel lines checked and no apparent leaks - tank removed, cleaned and breather checked
Fuel Pressure Regulator Changed
Inlet Manifold Gasket renewed
Exhaust Manifold replaced with re-slimmed one, new gasket and new studs/nuts
Wastegate Modulator and pipes renewed - even ran it like the defender for a few days with no change
Turbo to Intercooler pipe removed and air discharge from turbo checked with waste gate manually operated
Wastegate free and actuator appears to be working
Land Rover Specialist had vehicle twice - no success, although sensors were replaced as a result
No fault codes showing and injector readings appear normal, as does throttle signal
New vacuum pump
Can't find any air leaks in hoses and no associated noises but open to advice on how to check properly
It did have a stage 1 remap by bell auto services with previous owner in Yorkshire. The EGR has been removed as well. ACE system removed also and converted back to normal springs.
I'm doing some other work soon (prop shaft UJs and Diff Seals). It will also need a new clutch/flywheel and associated stuff as well. Spigot Bearing or Release Bearing is noisy when cold!
She's on a strong chassis. I've done hours and hours of preventative work on that and body mounts. New cv joints, new drop links. Everything else appears serviceable.
Well, I'm now at a loss. If I have missed something obvious I'm happy to be told. Could the ECU or Engine Loom need work? Glow Plugs and/or wiring? Relays? Fuses all seem fine. They're the next things I'm thinking. The symptoms do go away mostly (but not completely) by disconnecting the AAP sensor in the air filter box and she still hunts for about 5 seconds when returning to idle. I have cleaned all the earth points I can find - not saying I've found them all though!
Any thoughts and advice would be most welcome. I have changed oil and all filters approx every 5k miles since owning it. Had 123k when bought and now has 146k.
Best Regards, James Gilbert.
I have been the owner of a DII (2001 GS) with EU5 TD5 since June 2016. Drove perfectly for about 6 months. Ever since it has suffered the common poor running issues. It does still have plenty of pull and cruises fine but at slower speeds and local roads it 'misses' and also hunts at idle. Sometimes it is so bad I have to dip the clutch when slowing to a stop to prevent it being so erratic that it really makes the vehicle judder.
I have done the following work with no success:
Genuine Injector Harness (no oil in red ecu plug)
Injector Seals (copper washers and rubber o rings) (double checked injector set ups)
All new sensors (Genuine) (AAP, MAF, MAP, Crank, Coolant and Fuel Temp)
Genuine Fuel Pump and Fuel Filter Housing with new filter and new valves (Non return and Air Bleed)
Fuel lines checked and no apparent leaks - tank removed, cleaned and breather checked
Fuel Pressure Regulator Changed
Inlet Manifold Gasket renewed
Exhaust Manifold replaced with re-slimmed one, new gasket and new studs/nuts
Wastegate Modulator and pipes renewed - even ran it like the defender for a few days with no change
Turbo to Intercooler pipe removed and air discharge from turbo checked with waste gate manually operated
Wastegate free and actuator appears to be working
Land Rover Specialist had vehicle twice - no success, although sensors were replaced as a result
No fault codes showing and injector readings appear normal, as does throttle signal
New vacuum pump
Can't find any air leaks in hoses and no associated noises but open to advice on how to check properly
It did have a stage 1 remap by bell auto services with previous owner in Yorkshire. The EGR has been removed as well. ACE system removed also and converted back to normal springs.
I'm doing some other work soon (prop shaft UJs and Diff Seals). It will also need a new clutch/flywheel and associated stuff as well. Spigot Bearing or Release Bearing is noisy when cold!
She's on a strong chassis. I've done hours and hours of preventative work on that and body mounts. New cv joints, new drop links. Everything else appears serviceable.
Well, I'm now at a loss. If I have missed something obvious I'm happy to be told. Could the ECU or Engine Loom need work? Glow Plugs and/or wiring? Relays? Fuses all seem fine. They're the next things I'm thinking. The symptoms do go away mostly (but not completely) by disconnecting the AAP sensor in the air filter box and she still hunts for about 5 seconds when returning to idle. I have cleaned all the earth points I can find - not saying I've found them all though!
Any thoughts and advice would be most welcome. I have changed oil and all filters approx every 5k miles since owning it. Had 123k when bought and now has 146k.
Best Regards, James Gilbert.
