Door Lock Issue - Ford Powerstroke Diesel Forum
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Old 01-17-2012, 07:44 PM
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Door Lock Issue

So over the past few weeks my driver's side door lock has been getting weaker and weaker. It finally quit all together the other day. Bought the replacement but haven't had a chance to put it in yet as I have just been using the key.

Well all of a sudden the door lock cylinders seem to lock up completely. They don't seem frozen as once they do move, they move fine. Tried some graphite and no help.

I made a short video to show what is happening.
Super Duty Door Lock Issue - YouTube

Being a college student I just wanted to get some opinions on whats going on here before I start dropping money. My thought is that the lock cylinder(s) are bad, but it seems weird that it happened to both doors at roughly the same time.
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Old 01-17-2012, 07:45 PM
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I know the door lock actuators always go bad. Not sure if it has to do with that or not.
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Old 01-17-2012, 07:54 PM
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Yeah, I thought about fixing the actuator myself but already bought the part before I saw the write up.

I don't think it is related since everything moves smoothly when it does work. However I am not 100% sure.
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Old 01-17-2012, 08:30 PM
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This happen all the sudden to my 99 7.3L the son of gun locked me out of its self i had to call a lock smith to pop the lock for me... i couldnt believe it
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Old 01-18-2012, 04:10 AM
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What about on the inside? Can you lock it manually and then open the inside handle without it jamming up?
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Old 01-18-2012, 04:18 AM
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after i got inside the front two doors worked but my keys wouldnt even unlock them and one of my back doors wouldnt open at all. it was a pain in the butt being out of town and you couldnt lock the truck doors because you couldnt unlock them,
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Old 01-18-2012, 06:33 AM
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Yeah, the lock knobs move up and down freely. You can sit inside the truck and move them all day long.
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Old 01-18-2012, 10:29 AM
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Well, you know the actuator is bad, so if it were me, I would put the new actuator in and see if that fixes the problem. Seems to me that since the actuator is dead, that "could" be contributing to the other issue. However, I am by NO means a mechanic!!

I have a dead actuator as well, it's the passenger rear door...just been lazy to getting around to replacing it

Keep us posted
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Old 01-18-2012, 11:08 AM
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Quote:
Originally Posted by DrewGerhan View Post
So over the past few weeks my driver's side door lock has been getting weaker and weaker. It finally quit all together the other day. Bought the replacement but haven't had a chance to put it in yet as I have just been using the key.

Well all of a sudden the door lock cylinders seem to lock up completely. They don't seem frozen as once they do move, they move fine. Tried some graphite and no help.

Being a college student I just wanted to get some opinions on whats going on here before I start dropping money. My thought is that the lock cylinder(s) are bad, but it seems weird that it happened to both doors at roughly the same time.
Is this time of day related? Meaning, the door cylinders don't operate in the morning when it's cold outside or does it happen any time? If in the morning, they do make some de-icer stuff that can be squirted in there. Have you tried WD-40?

As far as I know, the actuator shouldn't be affecting the cylinder operation. I guess it's possible something is gummed up inside the door....the linkage maybe.
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Old 01-18-2012, 11:41 AM
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It is anytime. Warm or cold. I thought it might be frozen too, but I don't think it is. Hopefully the weather is decent this weekend and I'll have time to replace it.

Another thing to note, it has keyless entry. Fob, no keypad. Some days the truck will lock/unlock with the fob just fine. Other days it will not lock or unlock until after I start the truck, turn it off and go to lock it as I'm walking away. I used to just manually unlock it when this happened, but now I have the issue with the the door locks.

Related?
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