not to sure about that , i guess i would need to get a vac gauge or something like to check it with , i still cant get past the turning on the igniton stage without starting engine for it to happen each time the water temp sen is connected it wont start with out it does have tried connecting one core of water temp wire at a time the pin 11 cable is ok its when the pin29 cable is connected it kills it , so i ll have to try and get hold of a similar ecu to try and see if that makes any change , anybody got one forsale ??