My 98 Volvo has the same problem. I don't mean to brag but I'm a mechanically minded and capable of doing my own work. I took the dooe apart and found a plastic piece broken on the lock mechanism. Just one little piece that can onlly be replaced by buying the whole mechanism. $130 dollars from the dealer. I thought that was to much so I've been unlocking it manually. It locks ok just won't unlock. About a year now and I'm about ready to spend the $130. i approve this answer ...very well put
Check out http://volvospeed.com/Repair/v70latch2.php . If you can't find enough pieces to repair the part, Erie Vovo (yes, Vovo) has quoted $75 for a used latch assy. with a lifetime warranty. I pieced mine together with crazy glue and drilled holes into which I put more crazy glue and lengths of steel wire.
Your 1998 F150 has 3 relays for your power door locks : an all unlock relay / a driver unlock relay / and an ALL LOCK RELAY I'm guessing that the ALL LOCK RELAY has failed I'm sorry but I haven't found the location of the power lock/unlock relays on your F150 yet ( does anyone know the location of the power door lock / unlock relays on a 1998 F150 ? )
take it to the dealer
How do I unlock my 1998 I 30 radio reset
Is there a Repair Manuel for a 1998 Cherolet Lumina?
what is is of radio unlock codes Acura TL 1998
Autozone has the Repair Guide for this - check out the link over to the right.
From the PCM. You'll need a repair manual to determine which wires to test
unless you have the valet key the one key should unlock everything.. unless someone had your locks redone by a cheap locksmith or repair shop... there is a such thing as a valet key, which allows them to unlock your doors and start your car but will not unlock your glovebox or center console box.
Usually the leaks are at the high pressure line or the return line of the power steering pump. Tighten all the lines at the pump.
A repair manual for the 1998 Buick Park Avenue would have a brakes repair diagram. A popular book is the Haynes Repair Manual.
To repair the power window on the 1998 Old Intrigue, you will first need to remove the interior door panel to access the window motor, switch, and actuator. You can then determine which part is broken or damaged and replace that part.
Beyond Repair was created in 1998-12.