I don't make many posts here, like to observe and read through some of the posts more than posts.
Anyway I have been having issues with my Focus in recent months I have brought it to 2 different mechanics and they still happen. I thought I might post here and some of ye might be able to point me in the direction of the the root cause of the issue.
A bit of background on the car, its a Titanium Focus, 2008 with DPF 109BHP. I bought it in Doncaster 18 months ago and brought it over to Ireland, re-registered etc and am delighted with the car.
It have given me no problems until now. About 3 months ago I was driving home and the car started chugging. When I say chugging the car was simply cruising and it started kicking back at me or missing something for a split second, there was no loss of power just this kick from the front of the car back to me, and it can feel quite severe and uncomfortable.
Brought it to a mechanic who worked for Ford in the past and he told me the car had an issues with the Cat, DPF and the jets. So one jet was replaced, the Cat was replaced and there was some kind of liquid put into the DPF (or some little tank that is linked to it)
Drove the car for another 3 weeks and it was working perfect again, until the dreaded chugging started. Another mechanic told me the DPF was filling with soot, and to bring it out on the motorway and drive it in high revs to blow the soot out of the dpf. But the intermittent chugging continues.
I have observed that the problem occurs mostly when I go under a half tank, and gets more severe the lower the dial gets on fuel gauge. When I am about to come onto the reserve the car has cut out when i come to a stop if its been chugging.
(On a side note The fuel gauge in the past hasn't risen in the after i fill the tank immediately but that may not have be associated with this)
The local Ford dealer is looking at it also but they are saying its a different DPF set up on it as its a UK import and some little tank connected to the dpf that drops liquid into the dpf could be causing this.
Also some folks have told me that the focus has electric fuel sensors and electric pump and these may be dirty??
Nonetheless I am clueless with the nuts and bolts of cars. If anybody could shed any light on what I have just said I would be hugely grateful.