I'd still try the bypass, and also change any appropriate fuses. One just never knows, lol. It does sound like some sort of hot connection problem to me, but then again, my 2 GTV6's ran perfectly, so I can only guess. MY experience with these newer (lol, sort of) V6 Alfas is that electrical connections are the real bugaboos. The rest, the mechanical problems, are mostly just old age and long term wear, common to all older cars, hopefully picked up at inspections and regular maintenance.
Alfa of Tacoma has an aftermarket diagnostic computer (the size of a small suitcase) which he used on our Milano to chase down a problem it had, which turned out to be the double relay for the pump. Too bad you are not here, as he thought it worked pretty well chasing weird problems. He complained that they paid very good money for it but almost never use it.
1989 Milano, Shankle Sport
1991 164S, stock
1994 164LS (~Q)
1972 Morgan 27
previously owned since 1964:
62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
Last edited by Del; 03-29-2017 at 08:35 PM.