Have got a lot of good info off here recently but I feel like I have reached the end of my tether with this car.
It's a 2015 150hp diesel with 345,000kms on it, I've had it about a year and have put 27,000 of those on it myself. So far, while I like the car to drive, I'm not very impressed with it. I had a 2.4 volvo for the ten years before it and I would easily get 50-60 mpg out of it, I'm lucky to get 40ish from this car. I'm usually putting in about a litre of oil every 1000kms, with the amount of oil i put in it I don't think it needs an oil change!!!
. The vast majority of my driving is 110km round trip to work with about 80km being motorway driving.I've recently started to get the flashing glow plug light of doom and no power. The first time I scanned the codes it gave me the p0299 code along with another one related to the camshaft position sensor. I replaced that and it hasn't come back. Years ago I had a '01 A4 that had the same problem that turned out the be the MAF, thought it was that so it was changed.
I've run two dpf cleans on the car as I thought that was blocked, enigne sounded choked, but that had no joy. On the last couple of drives the dpf light came on but has since gone off. I noticed the DPF light used to come on after about 160km driving on the motorway but there was no loss of power and it would be gone when I'd switch the car on again. The cooling fans are always running whenever I stop the car and the start/stop feature has worked maybe two or three times in the year I've had it.
I vacuum checked the pipes going to the actuator and that is holding, brought it up to 25 Hg and it dropped to about 24 Hg after a couple of seconds but held steady at that for 10 minutes. I've noticed that i can push up the bottom of the actuator and wiggle the bottom of the shaft and can hear a tinking sound in the turbo. Should it be easy or difficult to push that shaft up? Is there a return spring in the diaphragm that might be failing/weak? It pulls and holds vacuum no bother. The actuator that is on my car is not the one with the two nuts on it, it's a flat plate on the end connected to the pivot. There doesn't seem to be any play in that pivot just that i can retract that shaft fairly easily for a couple of mm.
Sorry for the long post but I'm loosing the will to keep going with this car, especially since I was so spoiled with my previous vehicle, never an ounce of trouble bar the usual maintenance.
Thank.
D.