The Ford Barn

SoCalCoupe · 06-28-2025, 11:31 PM

I know this might be a basic question, but I’m not sure of the answer. In a properly functioning vacuum wiper system, should there be any airflow when the wipers are turned off?

I’m hearing a slight suction sound from both the wiper motor and the wiper switch when the system is off. It seems like a couple of small vacuum leaks—but is that normal?

I’ve heard that a few people still rebuild vacuum wiper motors, but I’ve never heard of anyone rebuilding a wiper switch. I have two switches—one is NOS—but both seem to draw a small amount of air.

Can these be repaired, or should I just give up and start looking for a 6V electric conversion?

06-28-2025, 11:31 PM	#1
SoCalCoupe Senior Member Join Date: Sep 2021 Location: Point Loma, San Diego, CA Posts: 529	Vacuum Wiper Questions I know this might be a basic question, but I’m not sure of the answer. In a properly functioning vacuum wiper system, should there be any airflow when the wipers are turned off? I’m hearing a slight suction sound from both the wiper motor and the wiper switch when the system is off. It seems like a couple of small vacuum leaks—but is that normal? I’ve heard that a few people still rebuild vacuum wiper motors, but I’ve never heard of anyone rebuilding a wiper switch. I have two switches—one is NOS—but both seem to draw a small amount of air. Can these be repaired, or should I just give up and start looking for a 6V electric conversion?