Hi guys, new member here!
I've just bought a very cheap IS220d last week. I knew that the alternator needed a change as it wasn't charging the battery, and I knew there was power loss. I changed the alternator and now it charges. Problem one solved. Problem 2, power loss...
Now I need to make it clear that there are no lights or warnings up on the dash, not are there any errors thrown up by code checker.
I thought it could be the DPF that was causing back pressure, as initially, when you put your foot down and let up the clutch the car jolts like it wants to fly away... Then all power is gone, and you find yourself getting beaten off the line by a 1.2 corsa. Needless to say, no performance what so ever. I've given the EGR a clean and, to be honest, it didn't look that bad to begin with. Just something I needed to check off my list. There is no white residue on the bottom side of the oil cap, so no head gasket issue.
I gave the car a good run out on the duel carrageway the other evening with some BG245 in the fuel tank to see if I could clear anything out that needed to be. It seems 5% better from it, but still way under power.
So here comes my question. When the DPF is the issue, does it always throw up an engine light or error code, or can that sometimes just not happen?
Second question. Any one on here ever had the same feeling car?
Third question. How can I check if the EGR valve is actually working correctly? It's clean, and the valve works perfectly when looking at it off the vehicle, but how do I know that the motor on it is actually actively controlling it correctly? Same questions as to the operation of turbo. How do I know that's working?
One more bit of info for you. The car revs fine when not moving and not in gear, so one would assume it's fine unless there is any load on engine...
I hope someone can point me in the right direction. Thanks again
