Hi got a gsi but it idles either too low or too high, and i can not sort the problem. I had the ecu scanned and the only fault was the (RON) plug.
(The black or brown plug that has 95 on one side and 91 on the other).
Went to my local vauxhall dealer and they could only supply me a plug for a corsa B.
Problem still not solved.
Can anyone please help me???