Been a while since I have been in Newton! Check the lower radiator hose and see if collapses when accelerating, seen this a few times. Just have someone stab the accelerator when you are looking at the hose in your driveway.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
Check the lower radiator hose and see if collapses when accelerating, seen this a few times. Just have someone stab the accelerator when you are looking at the hose in your driveway. 
