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  #1  
Old 04-21-2009, 07:37 PM
jcullom jcullom is offline
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2001 F250 door locks

I tried to search this, but came up with everything but. The power lock buttons on both front doors of my 2001 F250 have begun to work intermittently. Is this a problem with each rocker button, or is there a central controller going bad?
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Old 04-22-2009, 08:12 AM
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I think they together, if one fails it takes them all down. Are you sure it's the switch and not the actuators?
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Old 04-22-2009, 08:16 AM
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Quote:
Originally Posted by ReAX View Post
I think they together, if one fails it takes them all down. Are you sure it's the switch and not the actuators?
Nope, not sure of anything yet. Is there an actuator in each door activated by the switch?
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Old 04-22-2009, 08:34 AM
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Yes, but they are somewhat failure prone. I've done two in my 2002 and need to repair a third so far.

Ford uses a five wire reverse polarity switch. The actuator has two wires, when locking one is positive and the other negative, then when unlocking it's the reverse. The switch is kind of funny too, when the switch is at rest, both wires are grounded. So if you apply current to either wire with the switch connected, there is a direct short. So Ford has to work around the grounding issue somehow and this is why I think if one switch fails, they all go. However, I've had more problems with actuators than I have switches.
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Old 04-22-2009, 08:59 AM
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Thanks, I appreciate the info. Are the actuators sold seperately, at NAPA or somewhere?
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Old 04-22-2009, 10:16 AM
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I got fords, but I believe Dorman has an aftermarket that should be available pretty much anywhere.
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Old 04-22-2009, 10:35 AM
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Or you can repair them - there is a thread on here somewhere that shows how to repair them. I can't find it right now because it seems that the search function on this forum only looks at 1 word of your search term instead of all of them. Hopefully someone will be along that has a link to that thread.
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Old 04-22-2009, 10:45 AM
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Read this, you should be able to do the repairs yourself. click here
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Old 04-23-2009, 03:40 PM
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Thanks very much, appreciate all the help!
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Old 04-23-2009, 04:24 PM
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Yes do the forum that is above. It is a very common problem, as noted by the 100 or so people who have commented on the post. We did it to my 2001 at the firehouse and it is amazing what a little tin foil will do. Have a buddy there to help you though. You will need another set of eyes on the otherside of the door. First door will take you 1.5hrs and the next door will take about 25min. Its well worth the time. The new actuators have the same problem and they are a PITA to remove from the lock mechinisim. There are some pretty smart people on this site. Now if only Ford would hire them!!!!!!!!
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Old 04-24-2009, 03:15 AM
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2002 f-250

No worries, here it is. This worked great for me. This was from this site by another poster he had a great link with photos how to do this.



First I started by testing the signal at the harness plug to the actuator. Perfect. No issues here. Next I completely removed the actuator/lock mechanism and bench tested them with 12V..Here lies the problem. The actuator acted the same as when in the truck. First I did a thorough cleaning of all of the mechanism so it works freely and still had the same results. Here's where it get's tricky. These things are built so that they are NOT serviceable. I had already decided that they were going to need to be replaced, so I decided to break them open for closer inspection. It comes apart relatively easily, but appears that It cannot be put back together once apart. I drilled out two small rivets and then pried the case apart. As you pry the case apart you'll notice these small little plastic rods protrude up through the case cover. These rods are then "mushroomed" with heat through the upper case and then sealed with some kind of silicone. When you pry apart the case the "mushroom" head breaks off and the rod remains. You can dig out the silicone and mushroom head with a pick. It comes out very easy. Inside you will find a very small motor and some gear mechanism. I believed the problem at first to be worn brushes or dirty commutator contacts in the motor itself. You'll have to bend two little metal tabs out and pull off the brush housing on the back of the motor. I cleanded the gunk off the brushes and took 1500 grit to the commutator contacts and reassembled the motor. The motor worked, but if you applied even a slight amount of resistance on the armature, it would stop the motor. It should have been WAY stronger than this. I was stumped until I looked a little closer at the inside of the plastic brush housing. Inside you'll find a small, thin rectangular (thermal resistor relay, dodad, thingamabob??) pardon my ingnorance, but I'm not sure what to call it. All I know is that this little part is what keeps you from burning up the motor, should you continue to press the switch once the lock has been actuated. It appears that this thing wears out over time and will not allow enough signal to get through to the motor to make it work. THE FIX . I am cheap. Since I had done so much work up to this point, I decided that I would go a little further and try to make it work without spending the $$. I have better things to spend my money on than actuators. I took a small piece of aluminum foil and wrapped the "thing" voila! Perfectly working motor! I sat there and operated the thing for 10 minutes including one or two times stopping the armature and holding down the switch to see what would happen. The motor builds heat, but not much. Not enough to worry about. Now that I had a good working motor I decided I would try and reassemble the unit. The problem is you cannot glue the unit together as there is a rubber gasket around the perimiter of the case and if you tried to glue the rods into the case, you would not have enough pressure on the two halves of the case to keep the gears in place (these things actually apply a great deal of torque on the case) What I decided to do is completely break off the plastic rods flush with the bottom side of the case and then drill out the bottom case and screw it together. This worked perfectly. You'll need screws that are the same diameter as the holes in the top of the case to keep it from "wandering". Also the screws should not protrude through the back of the unit as some of the mechanism has some pretty close tolerances and a screw sticking through the back would not allow some of the mechanism to work (this can be remedied with a decent set of wire dikes or a hacksaw). I know all of this is hard to picture, but if you do decide to try this fix, you'll see what I am describing here. The locks are back in and working flawlessly. fficeffice" />>>
>>
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Old 07-26-2009, 11:16 PM
volez volez is offline
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http://www.ford-trucks.com/forums/al...p?albumid=3215
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Old 07-26-2009, 11:16 PM
 
 
 
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