[Grant]

All you have to do is unplug the wire going to it.

Unless you're careful with the throttle, the fuel cut can make the car a bit jump when it come on and off the gas. I think somehow the later Alfettas were less effected by this, as I remember reading a R&T article which talked about how much better the transition was than the previous year's car they tested (I forgot the actual years though).

With the solenoid disconnected, the car was less jumpy and there was no hesitation when it was time to get back on the gas. It actually made the car drive a lot better after decel. My car always hesitates for a second before it accelerates after fuel cut. For me, it's a worthwile trade-off for gas mileage, but modern EFI is much better at resuming fuel after coasting.