power door lock issue
Senior Member

Joined: Feb 2009
Posts: 874
Likes: 18
From: Brisbane, Australia
Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: power door lock issue
take the panel off on the left side where the relays are, undo the screws that hold them in, get a bit of sandpaper, and clean up the metal so there's a good ground. I remember mine also did that and it was just a dodgy ground.
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
Yeah, actuator was loose, rods are loose, and that bracket that the actuator pulls is loose too. All these things are on with rivets which makes it ultra annoying. The lock mechanism might be full of too much gunk as well, i greased it alot, is it possible to over-grease it??
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
I'll check the ground as well under the kick panel!
Joined: Mar 2008
Posts: 2,940
Likes: 20
From: Boston, MA
Car: 1983 Pontiac Trans Am Daytona 500
Engine: Crossfire 305ci V8
Transmission: Jasper 700R4 4 speed Automatic
Axle/Gears: 3.23 limited slip/posi
Re: power door lock issue
Senior Member

Joined: Feb 2009
Posts: 874
Likes: 18
From: Brisbane, Australia
Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: power door lock issue
no specifically, just saying what i went through to get mine working.
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
if there was a problem with the ground, wouldn't it not work at all? Cuz mine clicks and moves slightly, but not enough to lock or unlock...
Senior Member

Joined: Feb 2009
Posts: 874
Likes: 18
From: Brisbane, Australia
Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: power door lock issue
not necessarily.
If there's any resistance you won't get the full punch from the relay, hence not moving all the way.
I doubted it too till i saw it with my own eyes.
Only take a minute to check though, and its free :P
If there's any resistance you won't get the full punch from the relay, hence not moving all the way.
I doubted it too till i saw it with my own eyes.
Only take a minute to check though, and its free :P
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
Damn!! I'm pissed i didn't check this before... So, how can i tell 'visually' if the metal is making a bad contact? Or should i take sandpaper to the metal anyway?
Senior Member

Joined: Feb 2009
Posts: 874
Likes: 18
From: Brisbane, Australia
Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: power door lock issue
I'd sandpaper it just to make sure.
If you get all the bits done that don't cost anything it works out better for your wallet.
Sandpaper the metal that the relay screws onto, if I remember correctly that screw is the ground, so if its rusty just put a new screw in, make sure there's good contact between the relays and the metal, and see if that make a difference.
Then spray the crap out of the linkages, actuator and other bits in the door with a spray can of degreaser, really soak it in and let it literally wash any gunk out to the bottom of the door, if you have access to an air gun or even just a can of compressed air, blow that through, then apply your grease.
Check all the linkages are straight, and if necessary even bend/unbend them a little with a bit of trial and error to see if you can get the actuators to work.
I actually tested my actuators by holding the lock or unlock button down, if it instantly goes to max its fine, if it moves and then slowly moves the rest of the distance, its probably a build up of something, if it moves a bit and thats it, and then another few presses gets it all the way its probably your relays, or bad ground.
If you get all the bits done that don't cost anything it works out better for your wallet.
Sandpaper the metal that the relay screws onto, if I remember correctly that screw is the ground, so if its rusty just put a new screw in, make sure there's good contact between the relays and the metal, and see if that make a difference.
Then spray the crap out of the linkages, actuator and other bits in the door with a spray can of degreaser, really soak it in and let it literally wash any gunk out to the bottom of the door, if you have access to an air gun or even just a can of compressed air, blow that through, then apply your grease.
Check all the linkages are straight, and if necessary even bend/unbend them a little with a bit of trial and error to see if you can get the actuators to work.
I actually tested my actuators by holding the lock or unlock button down, if it instantly goes to max its fine, if it moves and then slowly moves the rest of the distance, its probably a build up of something, if it moves a bit and thats it, and then another few presses gets it all the way its probably your relays, or bad ground.
Senior Member

Joined: Feb 2009
Posts: 874
Likes: 18
From: Brisbane, Australia
Car: 1985 Pontiac TransAM
Engine: 400SBC 24x conversion
Transmission: T700r Stage2 Shiftkitted
Axle/Gears: 2.77 9 Bolt
Re: power door lock issue
sorry and to answer your question, if you can see rust, its bad, if there's grease or grime and crap, its probably bad, if you really want to rule it out, you could always run a wire from your neg- terminal on the battery and wire it to the relay.
If something isn't working i usually eliminate all the car wiring and run it straight from the battery wiht a fuse, then i know straight away if its the part or the car wiring.
If something isn't working i usually eliminate all the car wiring and run it straight from the battery wiht a fuse, then i know straight away if its the part or the car wiring.
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
Very good information evilstuie! Thanks a bunch, I hope I can fix this over the weekend, I'll try all the above mentioned tips! Hope it works!
Thnx
-marc
Thnx
-marc
Re: power door lock issue
So, most of these seem relevant to me, but not entirely. My power locks work intermittently. Sometimes, I click it to lock the doors, and it won't work. Sometimes, it works fine, like three or four times in a day. I can even unlock, lock, unlock, lock...etc. Then sometimes, it's like there is no power to it. It never half-@$$es locking though. It either works, or it doesn't. Any ideas?
On Probation


Joined: Apr 2007
Posts: 1,592
Likes: 18
From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: power door lock issue
If they click and make noise but not moving the rods to lock/unlock prob.
just a good cleaning with WD-40 and a bit of spray white lithium grease
will fix them up.
I did this with my 84 and they now work fine.
just a good cleaning with WD-40 and a bit of spray white lithium grease
will fix them up.
I did this with my 84 and they now work fine.
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
Hey guys, old thread but... I just did the passenger door again today and i couldn't find WHERE the relays are! Any clues? Are they under the kick panels?
Joined: May 2007
Posts: 2,340
Likes: 2
From: Montreal, Canada
Car: 1986 Chevrolet Camaro IROC-Z28
Engine: TPI 310ci (LB9)
Transmission: Custom Rebuilt 700R4 - 2600 Stall
Axle/Gears: 10 bolt, 3.73 Eaton Limited-Slip
Re: power door lock issue
ah, thanks!
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