I thought that you might like some feedback to the thread that I posted on the 18th Jan. After much research (having bought the 2 books on Bosch injection systems as recommended here) and talking to a friendly mechanic who was prepared to listen (he has since borrowed my books!), we decided to change the lambda/oxygen sensor. What a difference! The car is much smoother/powerful etc, with absolutely no sign of "throttle freezing". apparently the old one was reading constantly 5v, whereas the new one reads from 0.9v-4.9v - a result at last.
Steve
ps Friendly mechanic is Rhys at Autocheck, Dursley, Glos (01453 543264)
Steve
ps Friendly mechanic is Rhys at Autocheck, Dursley, Glos (01453 543264)