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1991 Buick regal custom sluggish/difficult power locks.
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dontfeedjay
New User
Aug 12, 2014, 9:40 AM
Post #1 of 3
(1524 views)
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1991 Buick regal custom sluggish/difficult power locks.
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So the issue I am having is that my 1991 Buick regal customs power locks don't work proper. When it is warm out, the buttons and locks work, but manually unlocking the doors with a key, or by hand from inside the vehicle is difficult.
In cold weather, the power locks are sluggish and move slowly when locked or unlocked using the power lock button in the car. This happens regardless of outside moisture. It can be cold and bone dry, and the issue persists. Also in the cold unlocking the doors is nearly impossible. From the outside the key will barely turn (I have tried using de-icer and similar products), and manually unlocking the car from the inside also requires a ridiculous amount of pressure on the lock itself to move it.
Again, buick regal custom, 1991. Engine is the larger of the 2 sizes available, I want to say 3.8. Mileage unknown as that stopped functioning a while ago.
Thank you for any help on this.
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 12, 2014, 10:00 AM
Post #2 of 3
(1521 views)
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Re: 1991 Buick regal custom sluggish/difficult power locks.
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If you're having a problem moving them manually, then the latches have to be binding up.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Aug 12, 2014, 12:36 PM
Post #3 of 3
(1509 views)
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Re: 1991 Buick regal custom sluggish/difficult power locks.
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Can be common as an aficionado of the old stuff, this is much newer! OE lube both wears out and get hard year, time, temps all involved. So, always handy but work to take all the door panels off and you need to lube all you can find inside the latches and key tumblers + while there all the moves like window regulators too where you can.
I have awesome luck with WD-40 first and depending spray white lithium grease. You need to get to back side of latches not what you see on door jam just opening door but do those too and the trunk lid stuff.
If felting on a window is gone (that happens too) just carry drying silicone spray and it will become a routine as no much lasts and greasing makes a mess you don't want.
While you have all this stuff don't neglect hood release latch and hinges all over the car even some glove box latches but those with a Q-Tip you don't need a mess.
Only once and a GM thing ALL locks were funky slow or inoperative for some going up only but trouble to find as it would work fine for months. 8 months later in fact was the lock relay worked but contacts on that particular vehicle for UP were not the same as request for DOWN and it worked but didn't let enough power thru it to actuate all locks dependably cold hot or whatever but liked it better with engine running with higher voltage as alternator is going was a clue.
It's a pest to take all panels off to do that but if you expect forever out of cars and I do you do that and do it anytime you are there for any other reason.
Hard by key is either that the key is also moving the actuator at same time or latch is that unlubed or hard grease lube as you said colder matters.
Off exact topic but you may be shocked at what cheap junk they hide that you need inside doors and this car isn't old enough for when thing were much stronger and of course weighed more and harder to assemble new which comes into play and heaven forbid an assembly actually take a person to install it new!
T
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