wiper Door Problem
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
IF the assy is free to move, not frozen up somehow....
note there are FOUR hoses....3 large and one small at the actuator....
pull the small one off with engine running, the door should pop up....
if not, check that is does with small hose connected, and wiper door switch...one of the black ones, under the steering column does raise the door....if it does....you most likely have a bad wiper vac solenoid mounted up/under the tach interfaces the electric wiper switch with the vacuum/mechanical operation...
note there are FOUR hoses....3 large and one small at the actuator....
pull the small one off with engine running, the door should pop up....
if not, check that is does with small hose connected, and wiper door switch...one of the black ones, under the steering column does raise the door....if it does....you most likely have a bad wiper vac solenoid mounted up/under the tach interfaces the electric wiper switch with the vacuum/mechanical operation...
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
The system has a number of "fail-safe" features. First, there is the vacuum solenoid switch (located on back of tach) which has to get power from the wiper switch before it will work. Then there is the [main] vacuum relay which must operate. There is also a wiper motor actuating switch located on the firewall. Don't forget the wiper blade switch which is under the right-side wiper and must be 'made' for the wiper door to close. You really need to buy a vacuum system (headlights & wipers) schematic and diagnostic manual from one of the C3 aftermarket parts suppliers so you know what is in the system (these manuals may be year-specific).
Pro
Joined: Jul 2004
Posts: 711
Likes: 61
From: Waterford CT
vacuum system diagram
PM me or e-mial me so I have your real e-mail address and I can send a vacuum didgram and trouble shooting guide. I just went through my entire vac system. I concur that the first place I would look for no response is the solenoid under the dash. Also, ensure that the over ride switch under the steering column has not been turned as that happened to me once. OOPS! It kills the power to the wipers!
Racer
Joined: Aug 2001
Posts: 388
Likes: 1
From: Bridgeport CT
Paul,
I am anxiously awaiting your reply.
RE: "PM me or e-mial me so I have your real e-mail address and I can send a vacuum didgram and trouble shooting guide. I just went through my entire vac system. I concur that the first place I would look for no response is the solenoid under the dash. Also, ensure that the over ride switch under the steering column has not been turned as that happened to me once. OOPS! It kills the power to the wipers!"
Have a great day,
Geoffrey Coenen
I am anxiously awaiting your reply.
RE: "PM me or e-mial me so I have your real e-mail address and I can send a vacuum didgram and trouble shooting guide. I just went through my entire vac system. I concur that the first place I would look for no response is the solenoid under the dash. Also, ensure that the over ride switch under the steering column has not been turned as that happened to me once. OOPS! It kills the power to the wipers!"
Have a great day,
Geoffrey Coenen
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
don't ask.....
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