lost on an
Join Date: Sep 2011
County: Australian Capital Territory
No luck yet P0161 and P1161 fault codes
I'll note INR's response as a possibility as my problem is continuing.
My secondary problem is that my mechanics are two of the better guys in Canberra by reputation and get quite a few difficult jobs. I dropped my car off on Tuesday evening to get a long shot fuel pressure sensor exchange done and also get the timing chains done and my car wasn't looked at until Friday due to other work taking longer to diagnose and solve.
To add to my joy, I'm now getting a P1161 and P0161 fault codes. I've now got the MultiscanECU plug and software on a disc, but I haven't done anything with them. My mechanic doesn't have the full set of Alfa diagnostic codes (they don't specialise and do performance dyno tuning on a lot of cars, so buying each one would be too expensive for Canberra), so the P1161 came up as an unknown code in the system. From searching here, P1161 is probably the Lambda sensor, which has probably been cooked by the car running too rich when it starts playing up. I'm not sure I've got the right answer on the P0161 (engine temperature).
By the way the car drives normally until 60-90 minutes of driving has occurred, heat and a sensor are still what I'm looking at. The car can be running very rich, so I doubt there's a fuel delivery problem as INR suggested, but until this is solved I won't really know.
For those interested in the timing chain replacement, that has now been bumped to January. I did get contacted via the site with a view that the camshafts were different and using GM parts wouldn't work. Whether that is true or not, I don't know yet. The photos I've seen of the rest of the timing chain bits and pieces to me suggest they are the same, except for the chain being modified.