Thread: Running rough - power issues

Mools, sounds quite like either a delaminated intercooler hose, or the beginnings of a fuel pump failure. Remove the hoses and pipework from the turbo to the intercooler on the passenger side of the engine bay and have a look inside for signs of delamination. The later hoses were of better quality so it isn't as common, but worth checking all the same.


JC

Check the cat. I seem to remember someone on here a few months ago had this type of problem and it was traced to the cat. Worth a try.

Allan

I second the delaminated turbo hose theory.

Originally Posted by justinc

Mools, sounds quite like either a delaminated intercooler hose, or the beginnings of a fuel pump failure. Remove the hoses and pipework from the turbo to the intercooler on the passenger side of the engine bay and have a look inside for signs of delamination. The later hoses were of better quality so it isn't as common, but worth checking all the same.


JC

Laggy response, bit more soot...

Justins suggestions +...

Disconnect MAF at plug and go for drive, if it feels the same....

EGR jammed open will cause it too.

Ok guys,

Thanks for the responses - got some stuff to go on there.

I had noticed that one of the intercooler hoses (the short one towards the bottom) was softer than the others, so I already have some silicone hoses en-route from the UK. I'll just take it easy until then, don't want bits of hose flying up the turbo!

I'll try disconnecting the MAF tomorrow and see what the go is. On recollection, I never had this issue before I put in a new MAF - soon after I noticed more soot.

Am I right in thinking that if the MAF isn't working then the EGR valve won't actuate? So IF it is stuck open I'd have to free it up manually?

As a slight aside when I blank of the EGR I'm also going to fit an EMS2 system - if anyone here has tapped the exhaust manifold to place an EGT sensor any tips would be greatly received - nervous about messing it up.

Thanks for your help so far, I'll let you know how it goes.

Thanks,

Mools.

Tapping into the exhaust manifold is pretty staight forward.

I think Tombie gave me this advice a while back when I did mine!

Remove the manifold from the vehicle, this prevents swarf finding it's way into the turbo later.

While you have the manifold off. Either remove completely or cut a slot in the webbing between outlets/ports. Also drill out the end stud holes.

From memory this is better explained with pics on Tombies website (TRT).

Good luck,

Tod.

I've fitted an EMS-2 along with the EGT probe.

The easiest and IMO as good a place as any to fit the EGT probe is where the EGR system takes exhaust gasses for recirculation.

Contact The Entertainer (on this forum) as he provides EGR removal kits with the option of a drilled exhaust manifold plate to take an EGT probe.

Also, check out a post by Bush65 on fitting the probe. Low EGT temps?

You'll also find a very good set of instructions at this site Alive Tuning - Real Land Rover Performance for TDi, TD4, TD5, TD6, TDV6, TDV8, Puma

Well, disconnecting the MAF thankfully solved the power problem - I think I'll keep it like that until I've done the EGR removal.

Regarding the Manifold and not wanting to sound like a smart arse; I've read around this a bit and I want to tap the manifold to get a meaningful reading of EGT. Having read posts by others and looked at the engine I don't think you can get one at the blanking plate location on a Td5 - or at least not without quite a long probe. So thanks for your suggestion MY but I will be courageous on this one and drill a hole (maybe). That said if you have any tips on any other points regarding installing the EMS2 I'd really appreciate them.

Rimmer / Tombie - had a gander at the TRT site - removing / slotting the webbing on the manifold sounds like a sensible idea but has there been any issues with this weakening it? How best to cut it away? I've never dealt with cast Iron (can you even drill it with a high speed bit?) I only have access to pretty crap tools so I guess I would probably need to pay for someone to machine it out properly (and tap the sensor hole at the same time). Any advice gladly received. Don't think I have the stomach for a ceramic coating - bit a nice idea.

Anyway - enough with the questions - I'm off out to do some overtaking