Power issues

[Paul Coddington]

Hello All.
Once again a pointer in the right direction is needed. So this 2.5 DT manual gearbox pain in the backside is giving me grief. It s current problem is that it's being completely gutless on hills apart from the odd occasion when it suddenly remembers how it used to perform.
I've checked and replaced the tubing for the MAP sensor, the fuel filter and tried another MAF sensor all to no avail.
A visual inspection shows that there's intermittent air bubbles in the clear pipe from the filter, so I'm going to remove and it just to check the seals. My other thought is that it's dragging air in on the fuel pump.
The lack of power on hills and the fact that it's pretty much ok on the level roads makes me think that the pump is on the way out, (I've found the post from wammers in the tech archive and will go through the tests).
My immediate question is if I unplug the MAF and drive it round the same hills it's way better, wouldn't a dodgy fuel pump give the same symptoms, wether or not the MAF was connected.
Ta muchly

 

[Datatek]

Hello All.
Once again a pointer in the right direction is needed. So this 2.5 DT manual gearbox pain in the backside is giving me grief. It s current problem is that it's being completely gutless on hills apart from the odd occasion when it suddenly remembers how it used to perform.
I've checked and replaced the tubing for the MAP sensor, the fuel filter and tried another MAF sensor all to no avail.
A visual inspection shows that there's intermittent air bubbles in the clear pipe from the filter, so I'm going to remove and it just to check the seals. My other thought is that it's dragging air in on the fuel pump.
The lack of power on hills and the fact that it's pretty much ok on the level roads makes me think that the pump is on the way out, (I've found the post from wammers in the tech archive and will go through the tests).
My immediate question is if I unplug the MAF and drive it round the same hills it's way better, wouldn't a dodgy fuel pump give the same symptoms, wether or not the MAF was connected.
Ta muchly

I would expect a dodgy in tank pump to give the same symptoms with or without the MAF but you never know. How full is the tank? Filling it up would help to eliminate the in tank pump. I have had the same symptoms with a duff pump and half a tank of fuel.
Really needs diagnostics with which you could check the MAP sensor and possibly the MAF.

 

[Paul Coddington]

Update. So eventually got round to checking the turbo, and the actuator is seized, I can't get it to move inwards at all. So having decided that this is probably the issue I would ask, is it best to just change the entire turbo or would it be worth try a replacement actuator first.
Thanks

 

[Datatek]

Update. So eventually got round to checking the turbo, and the actuator is seized, I can't get it to move inwards at all. So having decided that this is probably the issue I would ask, is it best to just change the entire turbo or would it be worth try a replacement actuator first.
Thanks

If it's the actual mechanism that has seized, it can be freed off.

 

[Paul Coddington]

I have had a bar on it, to no avail. I can get it to move slightly away from the unit but it springs back. I've had no success moving it towards the actuator body. Any handy methods of freeing it off. Or is it a case of removing it and trying that way.

 

[Datatek]

I have had a bar on it, to no avail. I can get it to move slightly away from the unit but it springs back. I've had no success moving it towards the actuator body. Any handy methods of freeing it off. Or is it a case of removing it and trying that way.

I did it on what turned out to be a scrap turbo on the bench, brake cleaner or Acetone. I still have the turbo I can do photo's if it would help.

 

[Paul Coddington]

I did it on what turned out to be a scrap turbo on the bench, brake cleaner or Acetone. I still have the turbo I can do photo's if it would help.

Yes definitely interested in photos and a DIY guide. it's got to come off anyway, new turbo's are a ridiculous price, Currently trying to source a recon which is proving difficult. So any chance of resurrecting this one is definitely the way forward.
Thanks

 

[Datatek]

Yes definitely interested in photos and a DIY guide. it's got to come off anyway, new turbo's are a ridiculous price, Currently trying to source a recon which is proving difficult. So any chance of resurrecting this one is definitely the way forward.
Thanks

Very sorry, it seems that the exhaust side of the turbo with the waste gate has gone missing so no photo's, probably went in the scrap iron bag. The actual waste gate is quite simple when disconnected from the actuator.

 

[Paul Coddington]

Very sorry, it seems that the exhaust side of the turbo with the waste gate has gone missing so no photo's, probably went in the scrap iron bag. The actual waste gate is quite simple when disconnected from the actuator.

Very sorry, it seems that the exhaust side of the turbo with the waste gate has gone missing so no photo's, probably went in the scrap iron bag. The actual waste gate is quite simple when disconnected from the actuator.

No problems, thanks for the pointers. The existing one has got to be taken off so I'll give it a look over and see what I can do.
Assistance very much appreciated.
Best Regards
Paul