Hi thought id give it shot on this forum to see if id get any resolve from an issue with my car I have a 2006 1.8tdci focus bought it from a second hand dealer and as always they fob you off to late to go trading standards now iv left it to long my fault! anyway to the issue

It used to start after about 35 to 40 mins of driving i would get a whine when the needle reaches 1700 revs ish and the car would be awful to drive specially in low gears and moving off from traffic lights etc now the problem is more towards 10 mins of driving almost like its in limp mode iv recently had the intercooler turbo pipe change not the small one but the bigger one which runs down behind the ns headlamp (it had a massive split in it) was kinda hoping this was the issue but clearly its not however i dont get the system error fault light come on now well once i did when i pushed high speed then came down to 30 ish along with it knocking turned engine off and on once stopped and it was fine after that although the whining still occurs going up through the revs im really hoping its not the turbo at fault and is something relativly small and simple the car has only done 63,000 i have run a turbo and egr cleaner through the engine and has made no difference

I believe the egr valve is the most likely culprit. On a plus side the fix is an average of 5 pounds and is a couple of hours at Most.

Ehen the engine gets hot it recirculates the exhaust gasses to make combustion 'easier' and 'more efficient'. However it gets coked up and drives everyone looney. Blank it off and power goes up, mpg goes up and poor behaviour goes down.

Blank it off and power goes up, mpg goes up and poor behaviour goes down.

And engine light comes on?

Does it need a remap unless its a blanking plate with a hole in it?

It's mechanical controlled so there shouldn't be one.

i really hope this is the case because its been driving me mad

Most the focus are mechanical except the later ones, at a fiver though, it's got to be worth a shot!

im assuming your on about a cleaner if so which one is best how do i go about applying it

Sorry perhaps I should have been clearer lol. An egr stainless steel blanking plate slide that in the way at the top of the engine, secure and laugh when it all works and enjoy the feeling it causes. There is a guide on the forum Lenny did installing egr blanking plates. Easy to do and we'll worth the effort.

will it make a difference that it is the euro 4 engine?

Shouldn't do, I have my 1.8 mondy blanked and that's euro 4 or 5 can't remember, and I did my 1.6 diesel cmax also. I believe other members here such as stoney, had his blanked without error.

Worst case scenario if it whines with the warning light, just take it out and it's back to were it was.

its got to be worth a shot I suppose and at 4 quid cant grumble at that hopefully there will be no eml lights

Hopefully do, even if they are present you can ignore them and one guy (Stef) here suffered this and it just went away after it realised he was ignoring it and wasn't taking the plate out lol

well i tried this blanking plate to no success. had constant eml lights started off after 5 ten mins of driving to then coming on straight away was still acting up like before with no power once warm. Wish i could describe the sound better all i can say is its like a low pitch bellow then disappears until you hit the 1700 ish revs again in gear 1 2 and occasionally 3 logically thinking its metal heating up and expanding creating the problem but my question is what bit of metal is heating up expanding and causing this bellow hmm anymore help would be appreciated

When you have got the blanking plate, start the engine and put your hand around the blanking plate, is it blowing? Can you get a video of the noise?

iv taken the blanking plate out as the eml was doing my head in and had made little or no difference to the running of the engine so i did not see the point in having it in there I may be able to get a video of the noise at some point