Blanked off large breather pipe at manifold to eliminate any leaks in that system but no change.Have now turned my attention to checking out the throttle body with the tests laid down in the kis online info. First test checks out the potentiometer resistance which has come up pos, should be between 25&30 kohms but is actually 11.6,the recommendation is to replace the throttle body at this point but I think I will go through the rest of the tests on Monday before I take that option.