Vacuum??
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,699
Likes: 1
From: Westampton NJ
Vacuum??
Ok...here are the details...I think I know what they mean, but I want to be sure.
Headlights come up and go down great. Brakes work great. Wiper door stopped working.
I have to force the door open by hand if I need my wipers. It will stay open on its own if I pull the override and open it by hand. It will close on its own when I turn off the override. When the wiper door is open, the headlights will not raise/lower anymore. As soon as I close the wiper door, the headlights work properly again.
Is it the little valve on the firewall, or the piepan shaped actuator that is bad? How can I track it down? Thanks! :cheers: :smash:
Headlights come up and go down great. Brakes work great. Wiper door stopped working.
I have to force the door open by hand if I need my wipers. It will stay open on its own if I pull the override and open it by hand. It will close on its own when I turn off the override. When the wiper door is open, the headlights will not raise/lower anymore. As soon as I close the wiper door, the headlights work properly again.
Is it the little valve on the firewall, or the piepan shaped actuator that is bad? How can I track it down? Thanks! :cheers: :smash:
Racer
Joined: Aug 2001
Posts: 473
Likes: 0
From: Raleigh NC
Re: Vacuum?? (rainman69)
Have you used a vacuum pump to put a vacuum on the actuator. If it holds, the diaphram is OK. Go to http://www.corvette-101.com for a discussion and troubleshooting guide for the headlights. You can run some of the same tests for the wiper actuator and relay as well. It could just be one of the lines as well.
Mine does the same thing. I have only had the car 6 weeks and have never driven it in the rain. I did know that the wiper door did not open on its own though. It would close but not open.
If you have been reading some recent threads I have posted, my situation created a wicked vacuum leak. I lose the ability to raise the headlights, but also the car starts running horribly and cuts off a lot at idle.
I found that the two of the hoses going into the relay mounted on the fender were plugged into the wrong ports. I have not been able to test my theory yet because my car is dead. Another long sad story.
The corvette 101 website provides explanations. Good luck.
Good luck.
Mine does the same thing. I have only had the car 6 weeks and have never driven it in the rain. I did know that the wiper door did not open on its own though. It would close but not open.
If you have been reading some recent threads I have posted, my situation created a wicked vacuum leak. I lose the ability to raise the headlights, but also the car starts running horribly and cuts off a lot at idle.
I found that the two of the hoses going into the relay mounted on the fender were plugged into the wrong ports. I have not been able to test my theory yet because my car is dead. Another long sad story.
The corvette 101 website provides explanations. Good luck.
Good luck.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Re: Vacuum?? (rainman69)
I have had the relay go bad on mine and also the seals on the acuator. I replaced the actuator seals and the valve and everything is fine now. You may want to pull the protective boot and look at the acuator seal on the rod and see if it split. If you smoke or do not mind it light one up and blow smoke throught the vacuum lines and locate your leak.
Mark B.
Mark B.
Melting Slicks
Joined: Nov 2000
Posts: 2,738
Likes: 53
From: Bogart GA
Re: Vacuum?? (rainman69)
Before you start pulling things off and replacing seals, go to Sears and buy a vacuum test hand pump. Get a vacuum system schematic. In your car identify and label which lines go where. The schematic will show you how to isolate the various vacuum systems. Once you study it for awhile you will be surprised at how simple it really is. You will be able to isolate all the various components and determine with the vacuum pump if you have a leak at that location. For me it was 30 bucks well spent and it put an end to what seemed like a never ending task. Good Luck
