Restricted Perf advice

[Grey Ghost]

Hello, i bought a 2006 2.7 diesel S-type with just on 100,000 miles 4 months ago. Superb car, but it has a !Removed! fault which is proving difficult to sort. Intermittently, usually if i accelerate fairly hard uphill, the orange light glows and 'rp' shows on the message centre. Stop and turn off ignition, restart and message and light have gone. i have had my local workshop put it on their analyser computer thingy and it shows no recorded fault. If i drive it like an old man (well i am 72!) it does not happen. The  gentleman who sold it to me (1100k across the other side of Spain) says he thinks it may be the EGR causing the glitch. Any ideas as to what may be going on?

[Old Peter]

Hi Keith, and welcome to the club.

The gentleman may have something right, and if so a cheap solution. Try a can of Wynns EGR Cleaner or if available a Terraclean service.  It does sound like one or the the other  ---  exhaust or fuel.

Regards,

Peter.

[Grey Ghost]

Peter, thanks, Terraclean is by the look of it only in its first days in Spain, 1000k to each/either of its two centres.

So i will get hold of the Holts product and give that a try.

In the fullness of time, i will post a 'Postmatch Report'.

Keith

[Grey Ghost]

Well now, surprisingly, i managed to buy a can of EGR cleaner at our local parts store,and now i have it, i am not sure what to do with it! Can i just remove the air filter and spray it into the inlet?

i have a workshop manual, and even removing the air filter seems to involve quite a bit of activity, and going any further into the EGRs looks like a step too far for me.

Has there been any discussion on the forum which i could read, explaining what to do with the spray can? 

By the way, my first Jag was a Mark II 2.4 in the late 60's,followed by an XJ6 in the 70's, and then two XJS V12 in the crazy 80's.

[Old Peter]

Hi Keith, 

First make sure the engine is running at normal operating temperature, and then make sure the rpm is stain at circa 1250 - a piece of wood and a brick can do it, or a willing assistant  --  To remove the air filter, clink inwards the two retaining clips and life the cover until you can get to the air filter  -- 3 minute job.

Then remove the air filter and holding the can upright as far as possible, spray in short bursts into air inlet.  Keep doing that till can is empty.  It will get itself into the EGR valves.

The revs should rise from time to time, which is nothing to worry about, but shows that it is working.

When the can is empty, replace the air filter and take the car for a short run.

There is also a product called Diesel Magic which also does an engine clean.

Let us know how you get on.

Regards,

Peter.

[Grey Ghost]

Peter, thanks again. Once I ignored the workshop manual the job became fairly easy, as long as you remember to undo the 'air cleaner retaining bolt'.

So, I did the job, all as described, and it was certainly not a waste of money. The test run revealed that the engine seems to rev much more freely, but unfortunately the amber light and restricted performance still came on and is doing so as soon as I give the accelerator a little umph. But as I said earlier, stop, switch off, restart, all back to normal.

So, air flow cleaned, now on to the fuel. I will use one of the additives (I read that Archoil AP6400-D may be as good as any?) and see if that helps with the Amber light problem.

Keith