td5 vcutting out at high revs

wickford90 · Nov 25, 2013

This has happened a couple of times recently and seems to be getting worse, when at top end of revs the engine seems to cut out, feels almost like its being limited. happens in 5th at just before 70,( sorry no rev counter ) its a 2001 defender with 103k on the clock always serviced and looked after, been remapped by Dynachip. Will clean the red plug tomorrow, it had some oil around it a while ago maybe more has returned since i cleaned it. In the process of trawling through previous posts.

johnlad · Nov 25, 2013

sounds like overboost, has someone shortened the actuator arm,
if you have a hawkeye or similar you can check the live data

wickford90 · Nov 25, 2013

johnlad said:
sounds like overboost, has someone shortened the actuator arm,
if you have a hawkeye or similar you can check the live data

No, nothing been touched,

wickford90 · Nov 25, 2013

johnlad said:
sounds like overboost, has someone shortened the actuator arm,
if you have a hawkeye or similar you can check the live data

Will try and get it hooked up to diagnostics, see if anyone local has Hawkeye.

johnlad · Nov 25, 2013

i have, but think im to far away

sierrafery · Nov 26, 2013

if you've got oil in the red plug just cleaning it doesnt help much, replace the injector loom asap

ratty · Nov 26, 2013

yep, sounds like overboost to me too. Try giving it a blast with wd40 and then work the rod back and forth with a pair of mole grips.

wickford90 · Nov 26, 2013

Thanks will give it a blast and wiggle see what happens.

wickford90 · Nov 26, 2013

ratty said:
yep, sounds like overboost to me too. Try giving it a blast with wd40 and then work the rod back and forth with a pair of mole grips.

Ok done that, how much movement should there be as mine hardly moves at all, a few mm with engine off, or should i have the engine running?

mikes lr · Nov 26, 2013

no need to run engine but it shuold have more than a couple of mill disconect the rod at the turbo side it should then be flopy if not its siezed

sierrafery · Nov 26, 2013

...or undo the two screws on the valve, release the valve and move the rod together with the valve...it will move very hard in situ.

wickford90 · Nov 26, 2013

Thanks, will have a go at that tomorrow. Am i right, its not the turbo end seized/stiff its the actuator, if so should i just get a new one.

DaveM-sport · Nov 26, 2013

Mine was siezed and was limiting at around 3000rpm under load. Could creep upto around 4000rpm with very light load but then would suddenly die and go into limp for a few moments.

Was stuck actuator too so I solved it by fitting a new one attached to a VNT turbo

sierrafery · Nov 26, 2013

wickford90 said:
Thanks, will have a go at that tomorrow. Am i right, its not the turbo end seized/stiff its the actuator, if so should i just get a new one.

usually the turbo side is sticking...the actuator has a membrane/diaphragm within moved by vacuum i doubt it could get stuck...it just might crack and not respond to the vacuum action, that's possible

wickford90 · Nov 27, 2013

sierrafery said:
usually the turbo side is sticking...the actuator has a membrane/diaphragm within moved by vacuum i doubt it could get stuck...it just might crack and not respond to the vacuum action, that's possible

If i disconnect from the actuator is it safe to give the rod a good tug in and out to try and free it up or will it damage the turbo.

Jaswilliams · Nov 28, 2013

I used lots of wd40 on mine a screwdriver and a hammer once moving mole grips see this YouTube video

http://www.youtube.com/watch?v=FyZ4zXPZOf8

ratty · Nov 28, 2013

wickford90 said:
If i disconnect from the actuator is it safe to give the rod a good tug in and out to try and free it up or will it damage the turbo.

Yes. Initially it may keep jamming but it will then start easing off.

wickford90 · Nov 28, 2013

Thanks for that, that a job for the weekend.

td5 vcutting out at high revs

wickford90

Well-Known Member

johnlad

Well-Known Member

wickford90

Well-Known Member

wickford90

Well-Known Member

johnlad

Well-Known Member

sierrafery

Well-Known Member

ratty

I'm not special I'm limited edition

wickford90

Well-Known Member

wickford90

Well-Known Member

mikes lr

New Member

sierrafery

Well-Known Member

wickford90

Well-Known Member

DaveM-sport

Active Member

sierrafery

Well-Known Member

wickford90

Well-Known Member

Jaswilliams

Active Member

ratty

I'm not special I'm limited edition

wickford90

Well-Known Member

Similar threads