Well she started doing it again.
So I pulled and replaced the air mass sensor because my brushes that hit the potentiometer were shreding. Put in a very nice used one and replaced the rubber ducting and throttle switch while I was at it. Got her started with some help from Steve. But the test drive shows the familiar problem.
So to recap, I have centered and adjusted the air mass sensor, replaced the potentiometer, replace the throttle switch. Still have the stall on acceleration.
I have 2 concerns can the EHA cause this (not sure but do not think so) and secondly can the new potentiometer be bad. I have 3 (2 clearly worn) however, and all show at about 3.96-4.01 Kohms my meter loses the nice consistant signal and goes to OL (out of range) then come straight back. This is read from pin 1 and 2.
I am desperate as although not a lot of money has gone into this alot of my time has, and while I have a better understanding of the car, I still have this stumble.
The good news is I have put my euro lights on so am very happy with those.
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)