A6 1995/6 1984cc pet ABK manual transmission saloon. There is a intermittant jolt/judder throughout the rev range. At idle the eng can almost stop and then abruptly pick up again, this action has a similar signature to the intermitant jolt/judder within the rpm range. It seems more like an electrical cut out/in, although it could be a fuel cut out/in. At idle the action is quick. It does not seem to slow down slowly as a fuel cut out may do. The engine seems to almost stop quickly and then with a jolt pick up quickly to idle. At rpm above idle a jolt /judder is noticable which is less noticable at higher rpm. In another forum it is mentioned that a spike was found at a coil. Does anyone know how to test for the electrical spike using a multimeter? It has been suggested that basic settings need doing, does this yr have basic settings? Do these engines run at 90 degrees C? I had put in a temp' sensor from another eng and it showed about 50 degress C on the guage. Some yrs ago I self checked the sensors and found relay 30 (eng' contr'l relay) was damaged. This could be an OBD 1 compliant engine. It is very difficult to find specific info re this car/eng. Got various bits of info. Thank you for any suggestions.