What a Wonderful Trip down Memory Lane… “Vacuum-Powered Wipers Needed Upgrading as Well.” The Intro Story on the Main Web Page on CarTalk…
The by-line is labeled Ray Magliozzi, but I have to wonder if Ray really wrote it as I am sure he remembers that automobiles that had Vacuum-Powered Wipers also came from the factory with a Duel Action Vacuum-Assist Fuel Pump.
Back then, the 40’s, the 50’s and even into the 60’s, various vehicles still had vacuum-powered wipers. I know my '59 Ford Ranch Wagon, 292 CI V8, with “3-on-the-tree” had that type of wiper motor.
As a teenager in the mid 1960’s, I image that like me, some owners got cheap and when the fuel pump need replacing, they opted for the standard fuel pump, since it was a few bucks cheaper. And that was fine for the most part, yeah the wipers slowed down under acceleration, but that was only when it was raining… When the Sun was shining, the wipers “worked great…”
However, one very wet and rainy night, I was pulling a trailer on an interstate highway and we hit a long, long hill and climbing that hill, with that trailer, the wipers stopped completely and I had to open the window, hang my head out in the wind and the rain just to see.
Within a couple of days, I found out that they sold Rebuild Kits for Fuel pumps then and I rebuilt that old Duel Action Vacuum-Assist Fuel Pump, and I never had an issue of the wipers stopping like they did that faithful night…
Under normal driving conditions, the Wipers never slowed down; under hard acceleration, yeah, they did slow down a bit, but not much…
With the advent of Intermittent, multi-speed (even rain activated…) wipers no longer suck… (LoL)