Vin the relay panel ,
There are 4 compnets to the power door lock circuit, the door lock lock/switch, wiring, relay and lock motors. Are the locks both locking and opening? If so probably a bad power door lock relay $30.00, either way I would say relay is the most probable and then wiring harness shorting next.
were is the power door lock relay on a 1994 olds 88
The power lock relay is located under the dash to the right hand side of the steering column. There are actually 2 relays. A power lock "lock" relay and a power lock "unlock" relay. The relays are all the way to the right of the relay center (one over the other). I have the same problem. My 1994 started locking spontaneously. I made the mistake of leaving it running and locked myself out. Fortunately, I had a spare in the house. Anyhow, I pulled the switches out of the doors and swapped them without any changes. I started blowing fuses as well. The power locks would lock the door and I could not use the switch or the key fob to open them. I had to manually unlock them. If your doors spontaneously lock, change the power lock "lock" relay. Most likely it is the cause of the problem. The relay is sticking and drawing power until the fuse blows. I hope this helps your problem.
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 ? )
In the 1995 Firebird, the power lock door relay is located in the door panel. Some times a fuse can blow or a wire can short, which would end up in needing a new fuse or a new relay.
The 2001 Chevy S 10 Blazer power door lock relay switch is located inside of the drivers side door. You will need to remove the drivers side door panel in order to access the door lock relay switch.
The Chevy Equinox was produced from the years 2005 to present in Ontario, Canada. The power lock relay in a 2008 Chevy Equinox is located in the interior fuse box.
it should be on the door lock motor on some early '91 models
On a 2002 Pontiac Sunfire, the door lock relay is typically located in the fuse box. The fuse box is usually found under the dashboard on the driver’s side or in the engine compartment. For specific relay identification, refer to the fuse box cover or the owner's manual, which provides a diagram indicating the exact location of the door lock relay.
In a 2000 Astrovan, the power lock relay is typically located in the under-hood fuse box. You can find it by removing the cover of the fuse box and looking for the relay labeled for the power locks. If you're having trouble locating it, consult the vehicle's owner manual for a diagram that details the fuse and relay layout.
In a 2001-2003 Mercury Sable, the door lock relay is typically located in the interior fuse panel, which is found underneath the dashboard on the driver's side. To access it, you may need to remove a cover or panel. Refer to the vehicle's owner’s manual for the exact location and identification of the door lock relay within the fuse box.