Vacuum Leak Somewhere
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 851
Likes: 10
From: Palm City, FL
Normal vacuum would likely make the valve behave normally, in other words, have enough vacuum to keep control to the relay. At reduced vacuum, the leaky valve would not leave enough vacuum in the circuit to actuate the relay, and thus close the door.
You can test the valve in your car. Remove the wiper door. Actuate the wipers and stop the travel somewhere along the top of the travel. IGNORE the top hose on the valve. Disconnect the middle hose on the valve. Next, disconnect and plug the small top control hose on the wiper relay. Find a short length of control hose, and connect to the middle outlet on the valve. Depress the top button on the valve, and you should be able to:
1 - Not be able to blow through the middle hose, (no leaks)
2 - Encounter vacuum when sucking on the middle hose, (actuating the relay )
You can test the valve in your car. Remove the wiper door. Actuate the wipers and stop the travel somewhere along the top of the travel. IGNORE the top hose on the valve. Disconnect the middle hose on the valve. Next, disconnect and plug the small top control hose on the wiper relay. Find a short length of control hose, and connect to the middle outlet on the valve. Depress the top button on the valve, and you should be able to:
1 - Not be able to blow through the middle hose, (no leaks)
2 - Encounter vacuum when sucking on the middle hose, (actuating the relay )
Wish me luck... I'll be back if I'm still having problems!
Drifting
Joined: Jul 2006
Posts: 1,259
Likes: 154
From: Deplorableville Nebraska
Checked out the valve... just by looking at it visually, it looks worn out i.e. the rubber on the button is all dry rotted to the point I can see the spring... so I just ordered one. It's cheap. We'll see if that solves the problem. I also ordered the relay, as I believe there might be problem there too.... that was a little pricey, but I can always return it.
Wish me luck... I'll be back if I'm still having problems!
Wish me luck... I'll be back if I'm still having problems!
Thread Starter
Burning Brakes
Joined: Sep 2006
Posts: 851
Likes: 10
From: Palm City, FL
If your new parts came from China, you'll probably be back unfortunately. Save your old wiper door valve, it can probably be rebuilt. Do yourself a favor and check your new parts for vacuum leaks before you install them. If you need help doing that let me know. Good luck!
