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Old 01-08-2011, 05:50 PM   #1
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Door lock cylinder problem

My 89 mustang doesn't have a key to the doors or trunk, so I got new lock cylinders, replaced the old one. And even before, my passenger door wouldnt lock. Got the door panel off, and I can't even push on the locking mechanism inside the door to lock it. Not a normal question in a thread but I didn't know if any one had ant ideas for fixing it. Also, my power windows work, butt electric door lock doesn't work on either side and I've made sure the connectors were together, any ideas for that?
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Old 01-08-2011, 06:15 PM   #2
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Re: Door lock cylinder problem

This is a hit and run post as i'm on my way out the door.. But for what it's worth..

If the door lock actuator is completely seized, it can make it very difficult to lock/unlock the door by any method as the internals of the actuator are holding everything in the unlock position. It's fairly easy to replace if that is the issue..
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Old 01-08-2011, 06:37 PM   #3
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Quote:
Originally Posted by MonteCitan
This is a hit and run post as i'm on my way out the door.. But for what it's worth..

If the door lock actuator is completely seized, it can make it very difficult to lock/unlock the door by any method as the internals of the actuator are holding everything in the unlock position. It's fairly easy to replace if that is the issue..
May be a hit and run but it's helpful. That's what I was looking at also, thanks.
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Old 01-08-2011, 09:40 PM   #4
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Yep, seized door lock actuators. Btw don't buy the aftermarket ones from latemodel. They suck!
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Old 01-08-2011, 09:46 PM   #5
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Originally Posted by Cobracoupe5
Yep, seized door lock actuators. Btw don't buy the aftermarket ones from latemodel. They suck!
Haha alright. Thanks.
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Old 01-08-2011, 09:59 PM   #6
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Originally Posted by Blb97stang
My 89 mustang doesn't have a key to the doors or trunk, so I got new lock cylinders, replaced the old one. And even before, my passenger door wouldnt lock. Got the door panel off, and I can't even push on the locking mechanism inside the door to lock it. Not a normal question in a thread but I didn't know if any one had ant ideas for fixing it. Also, my power windows work, butt electric door lock doesn't work on either side and I've made sure the connectors were together, any ideas for that?
Sounds like something f'd up in the linkage, someone may have tried to unlock the car with a "tool" previously. The actuators being seized is also a possibility.
Check the easiest thing first on the power locks, fusebox! Hope this helps!
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Old 01-08-2011, 10:08 PM   #7
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I did check but, there isn't a fuse. Sounds dumb but there isn't.
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Old 01-08-2011, 10:22 PM   #8
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Originally Posted by Blb97stang
I did check but, there isn't a fuse. Sounds dumb but there isn't.
Odd? Now I have to go see if mine has one. Never had problems with the locks on any of my foxes, so never even knew that lol.
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Old 01-09-2011, 12:34 AM   #9
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Originally Posted by 93CobraGuy

Odd? Now I have to go see if mine has one. Never had problems with the locks on any of my foxes, so never even knew that lol.
It has to though. I may have read over it but Im sure I didn't see anything for the door lock. I'll go grab the fuse panel cover and check again.
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Old 01-09-2011, 01:53 AM   #10
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OK I guess the locks are on a circuit breaker the same one as power windows, and you said your windows work, so its not that. If you have a test light or a volt meter, check for current at the actuator. If you're getting power there then you're actuators are junk. If not you have some kind of eclectical problem, and unfortunately I suck at wiring!
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Old 01-09-2011, 01:59 AM   #11
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Wait is it a convertible? My owners manual is saying that power windows for a convertible are on the same breaker. But in a coupe or hatch the windows have their own fuse also. All the manual says is the circuit breaker for the locks "check the circuit breaker located---starter motor relay" So basically if its a coupe or hatch the windows may still work if that breaker is out. Like I said, I'm not big on eclectical, so take this and go from there.
This is for my 93 though, but it should be the same.
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Old 01-09-2011, 05:36 AM   #12
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Quote:
Originally Posted by 93CobraGuy
Wait is it a convertible? My owners manual is saying that power windows for a convertible are on the same breaker. But in a coupe or hatch the windows have their own fuse also. All the manual says is the circuit breaker for the locks "check the circuit breaker located---starter motor relay" So basically if its a coupe or hatch the windows may still work if that breaker is out. Like I said, I'm not big on eclectical, so take this and go from there.
This is for my 93 though, but it should be the same.
No, it's a coupe. I'll check the power in the wire and the circuit breaker. Yes, my windows work. Thanks though.
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Old 01-09-2011, 10:24 AM   #13
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Pull those actuators out and throw them away, they are seized.
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Old 01-09-2011, 01:02 PM   #14
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Originally Posted by Cobracoupe5
Pull those actuators out and throw them away, they are seized.
Alright. That's what I was going to do.
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