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Power Door Lock / Latch Restoration

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Old Aug 21, 2005 | 10:18 PM
  #1  
Diggler86's Avatar
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
Power Door Lock / Latch Restoration

For all those that have 'sticky locks'...

Ive seen many say just spray grease all over, but you can barely see or get to the latch when its installed. Once I took a look it wasnt that hard to just remove the latch. You will also want to remove the piece that the lock solenoid moves, just drill out the one rivet.

Heres a before pic, the black grease is really very old and sticky.
Attached Thumbnails Power Door Lock / Latch Restoration-before2.jpg  
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Old Aug 21, 2005 | 10:20 PM
  #2  
Diggler86's Avatar
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
I cleaned it up using Zep 505 degreaser from Home Depot. Sprayed it a bunch then let it take a bath for a while. Worked quite well, heres a pic:
Attached Thumbnails Power Door Lock / Latch Restoration-after2.jpg  
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Old Aug 21, 2005 | 10:28 PM
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
Then spray white lithium grease from Home Depot all over the moving joints for both pieces.

Reinstall pieces (screw/nut for small piece), and power lock now works great!! Using original solenoids. Only one press required! Door also closes much nicer, always had passenger not completely closing the door but latching... what a pain.. should fix that too. Still have to do drivers side..

Also greased window tracks while I was in there, and door hinges. And used new design 2 rod holder (see other FAQ post on Door Rattles) and lubed those.

Let me know if any questions..
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Old Aug 21, 2005 | 11:48 PM
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From: Hawaii
Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
so, did your locks do what mine did? I press the power door lock button and i hear the solenoids but the lock moves very little and the door is still unlocked. I have to push the lock button maybe 3 - 4 times to get it to lock. Does doing this fix it?
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Old Aug 21, 2005 | 11:52 PM
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From: Marietta, GA
Car: '91 Firebird Convertible
Engine: 305 TBI (LO3)
Transmission: 700r4, Vette Servo
Axle/Gears: 3.27 9 Bolt, PBR disks
Originally posted by 1989karr
so, did your locks do what mine did? I press the power door lock button and i hear the solenoids but the lock moves very little and the door is still unlocked. I have to push the lock button maybe 3 - 4 times to get it to lock. Does doing this fix it?
This is exactly what mine do and exactly what I believe he is saying this addresses.

WTG, Dig!
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Old Aug 22, 2005 | 12:25 AM
  #6  
Diggler86's Avatar
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
yep, that's it. does it sound like you are sending morse code?, lol...

alternatively, you can buy new ones from Classic Industries for $205 EACH...
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Old Aug 22, 2005 | 01:18 AM
  #7  
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From: Hawaii
Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
yup....I'm almost positive I was doing S.O.S lol.....but $200+ for new???....hmmm.....I think I'll try this first Thanks for all the tips!
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Old Oct 19, 2005 | 04:55 PM
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From: Moorpark
Car: 1991 CAMARO 1968 FIREBIRD
Engine: CAMARO 3.1L FIREBIRD 455
Transmission: CAMARO 700R4 FIREBIRD TH-400
So i take out the part that hits the big bolt that holds the door shut?
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Old Oct 19, 2005 | 08:25 PM
  #9  
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
yes. there is 3 screws holding in on.

you will also have a bunch of rods connected to it you will need to disconnect (from memory):

outside door lock - a little plastic piece holds it on, it opens on one side, push it the opposite direction, the pull out the rod. hard to describe, but use a flashlight and you will see what i mean.

outside door handle - same as above, or you can just leave this one and move the latch down, its not connected

inside door lock - just unsnap the other end from the door, and bring it out with the latch piece, and remove later

inside door handle - this is the tricky one.... i couldnt figure how to remove from handle side, so i got a little screw driver and was able to bend the little metal piece to let the rod push out. a little tricky.. just have some patience.
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Old Oct 21, 2005 | 10:49 PM
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if you mess up those little clips getting them off the rods,you can thread the rod ends and use little nuts threaded on the end of the rod with a drop of locktight on them to keep them from working their way off.Works great & only takes a few minutes to do.use a tap & die set to thread the rod ends.
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Old Oct 22, 2005 | 01:06 PM
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From: Pittsburgh, PA
Car: 1987 Camaro IROC-Z
Engine: LB9
Transmission: 700r4
nice, i read this AFTER i put my door back together oh well it will just have to wait for another day.
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Old Oct 22, 2005 | 03:24 PM
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Or you can just roll the window down and spray the latch with PB Blaster through the window opening. It really is that easy.
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Old Oct 23, 2005 | 09:34 AM
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From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Originally posted by Drew
Or you can just roll the window down and spray the latch with PB Blaster through the window opening. It really is that easy.
Except the original grease + years of dirt cover the whole unit so a light coat of PB blasster on top doesn't do anything for half of the cars out there.
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Old Oct 23, 2005 | 06:24 PM
  #14  
Diggler86's Avatar
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
Originally posted by firebirdjosh
Except the original grease + years of dirt cover the whole unit so a light coat of PB blasster on top doesn't do anything for half of the cars out there.
agreed.
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Old Nov 22, 2005 | 10:22 AM
  #15  
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It's fixed the issues I've had on cars with more miles and hard abuse then most on this forum.
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Old Nov 22, 2005 | 11:42 AM
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From: Orange County, CA
Car: 86 TA
Engine: 305 TPI
Transmission: 700R4 - 2200 stall
Axle/Gears: 3.42 posi
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