The O2 sensor was new on friday afternoon. And the car was adjusted then to a 50% duty cycle or as best as he could get it when it did work intermittantly at idle, the duty cycle is in the 50's at 2500 rpm, and the exhaust gases reflected a well adjusted car.
My only problem is this blasted hesitation/stall and hard start.
I will drive it without the O2 until I can get the EHA harness in and can do your recommended tests.
It is very strange the car was running great until last Friday night, when I started getting these problems. I really think it is electrical. Will update when the EHA harness comes in.
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)