I continue to have issues with a p0171 code showing lean, but it goes off and on. I would say it’s on 70% of the time and off 30% of the time.
I have hit it with carb cleaner pretty thoroughly and noticed no difference in idle. In general, it’s never a rough idle, either.
Any ideas? I got the vehicle in August with very low mileage of 37,500 miles and now it has about 44,000. Other things to note:
–At the last oil change, it obviously had incrementally lost oil but I have not noticed any leaks (nothing on driveway and oil pan gasket is not showing a leak).
–Before the p0171 popped, I took the Buick on the only long trip since I got it in August, going 225 miles a few days before Christmas and then 225 miles back about 5 days later. Otherwise, almost exclusively used for commute to work (18 miles each way, mostly interestate).
–Finally, I’m adding a photo of some gunk that is spitting out from somewhere and appears to be aimed at the passenger side axle boot. It’s built up pretty good.
–This all seems to me to add up to possibly the upper intake manifold gasket issue. I don’t mind taking a shot fixing that but obviously would prefer to be something less involved.