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Topic: Problems with 77 pw switch or motor?

in Forum: C3 Electrical


Problems with 77 pw switch or motor?

Posted: 4/5/08 1:32pm Message 11 of 32
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Momence, IL - USA
Joined: 3/11/2008
Posts: 28
Vette(s): 1977 Corvette Coupe Light Corvette Blue
Did you replace the padding under the council by the switches because if not then make sure it is not tuching the switches.  We had a problim like that and fount out thet the sound deading pading contains some metal and can short out the switches.  If you push the pad down everything will work fine.  I know it sounds strange and I didn't beleive the guy who told me that but after working on the 77 none of them worked, i pushed down the pad and then everything worked fine.  Mike


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Problems with 77 pw switch or motor?

Posted: 4/6/08 7:10am Message 12 of 32
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Toledo, OH - USA
Joined: 2/22/2007
Posts: 175
Vette(s): 1977 auto.L48 383 stroker
Sgm2004, I did take that fuse out you are talking about, the metal 30 amp not glass fuse.  I believe this is supposed to act as a breaker fuse.  I noticed when I took it out it had a piece of wire wrapped around the terminals of the fuse.  This I believe was done by someone so to override the breaker.  Why, I am not to sure?  I will put the piece of wire back on the fuse and see if this takes care of the window problem I have.  Thanks for your help, gives me a great place to start!  Take care


Problems with 77 pw switch or motor?

Posted: 4/6/08 9:14am Message 13 of 32
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
If there was wire wrapped around the two terminals of the breaker, it was prolly put there because the breaker is...well...broke!
If you do put some wire back there, and that solves the problem, don't leave it like that. Get a new breaker. Don't want yer car burning to the ground because of that.


Joel Adams
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Problems with 77 pw switch or motor?

Posted: 4/6/08 6:59pm Message 14 of 32
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Falls Church, VA - USA
Joined: 3/22/2006
Posts: 232
Vette(s): 1975, 4 speed, L48, NOW Silver mist, Oxblood inside 2003 50th Av Torch RED little brother to 75
[QUOTE=Adams' Apple]If there was wire wrapped around the two terminals of the breaker, it was prolly put there because the breaker is...well...broke!
If you do put some wire back there, and that solves the problem, don't leave it like that. Get a new breaker. Don't want yer car burning to the ground because of that.[/QUOTE] Agree Thumbs%20Up may be a issue that can burn her down. keep tracking Mat let us know, thanks.
 
Guy



Problems with 77 pw switch or motor?

Posted: 4/7/08 8:07am Message 15 of 32
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Toledo, OH - USA
Joined: 2/22/2007
Posts: 175
Vette(s): 1977 auto.L48 383 stroker
I put the wire back on the breaker fuse and the windows still do not work.  Tried a 30 amp glass fuse and also did not work.  I have the console apart and couldnt find the pwr. window relay as sgm2004 stated that is near to the parking brake switch.  When I first got to the pwr. window switches I saw that the wires to the 3 posts on the bottom of the switch's were just held by electrical tape (unbelievable!)  I soldered the wires back on the post and am not sure if this may be the problem I am having with them not working.  Would soldering cause this?  Please let me know what you think, Thanks!

Matt



Problems with 77 pw switch or motor?

Posted: 4/7/08 7:13pm Message 16 of 32
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Falls Church, VA - USA
Joined: 3/22/2006
Posts: 232
Vette(s): 1975, 4 speed, L48, NOW Silver mist, Oxblood inside 2003 50th Av Torch RED little brother to 75
[QUOTE=fowler12]I put the wire back on the breaker fuse and the windows still do not work.  Tried a 30 amp glass fuse and also did not work.  I have the console apart and couldnt find the pwr. window relay as sgm2004 stated that is near to the parking brake switch.  When I first got to the pwr. window switches I saw that the wires to the 3 posts on the bottom of the switch's were just held by electrical tape (unbelievable!)  I soldered the wires back on the post and am not sure if this may be the problem I am having with them not working.  Would soldering cause this?  Please let me know what you think, Thanks!

Matt
[/QUOTE] Matt no the soldering should not cause. Damm wish I was there to help. You have done the right things so far. Just have to keep looking it a things, it happens with these problems. Be cool, may need to look agian at the grounds. Door still may need to be taken apart. Any one please ring in on this. Hope the whole system hasn't burned out some where. Let me know more thanks.
 
Guy



Problems with 77 pw switch or motor?

Posted: 4/9/08 10:43am Message 17 of 32
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Toledo, OH - USA
Joined: 2/22/2007
Posts: 175
Vette(s): 1977 auto.L48 383 stroker
The electrical gremlins continue to haunt me!  I did not do anything with the switches as I have posted and only tried replacing a few different fuses that were suggested.  I turned the car over to make sure it started and it did.  A couple days ago I tried it again (didnt touch anything since previous time) and now it wont turn over but the interior lights and gauges work fine.  The battery is fully charged just wont crank over, I get nothing when I turn the key now.  Plleeeeasssseeee Help!     I need to defeat these gremlins!  Thanks to all!

Matt



Problems with 77 pw switch or motor?

Posted: 4/9/08 8:41pm Message 18 of 32
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Belvidere, IL - USA
Joined: 10/24/2004
Posts: 438
Vette(s): 1977 Black T-Top ZZ4 5Sp 16in Wheels
Matt, don't know if this will help. I had a similar problem last year. Check the power feed, just before it splits to each window switch. Take off the tape and clean with brake kleen or electric spray. Mine was slimmy and grounding it's self out, switches didn't work. Good Luck, Dick


Problems with 77 pw switch or motor?

Posted: 4/9/08 9:06pm Message 19 of 32
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Matt, it's possible that you have a fuse link that is almost burnt, and only making contact sometimes. Check the fuse-links down by the starter, and make sure they have 12v on both sides of them. You might wiggle the wires while testing to make sure, as sometimes they will be ok, and then they may not.

Also, move your shifter into neutral, and try cranking it then. The NSS(neutral safety switch) may be the issue with no cranking. Perhaps while you were working with the PW switch wiring, you moved/jiggled something for the NSS.

Not sure where the PW relay would be on the '77...I think the one on my '74 is under the center console, but I can't remember...


Fuse Links on driver side, under booster...

Fuse links on pass side, right of wiper motor...

There are a couple more fuse links down by the starter, usually in the harness, about 4-5 inches up from the starter solenoid.

Adams' Apple2008-04-09 21:13:13


Joel Adams
C3VR Lifetime Member #56    

My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Problems with 77 pw switch or motor?

Posted: 4/10/08 7:16am Message 20 of 32
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Toledo, OH - USA
Joined: 2/22/2007
Posts: 175
Vette(s): 1977 auto.L48 383 stroker
Thanks to all for the great feedback and pics adamsapple!  I will get to checking all of the suggestions and let you guys know how I make out.  Thanks again!


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