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Ed,the switch actuator on the lower part of the stearing column may be going bad. It attaches to a rod that runs from the key switch.To replace it you have to remove the lower dash panel and drop the stearing column down. It will be on top of the column. Take the wires loose from it and remove the unit.It sounds a little complicated, but it's really not. Good luck!
The power window switch and motor, any of this can be the issue.If the motor is getting stuck or motor is getting weak, then this problem will be intermittent.If the switch is not completely faulty , but its wires are getting loose or getting short, then this can also cause this intermittent problems.
There are many other possibilities too:---
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This should help.Thanks.Helpmech.
I would seek a common element to all four switches and motors, such as a fuse or relay. Very unlikely that four separate window regulators died together. Find your fuse box, look in the manual, and locate the fuse for the windows. If it is not burned out, I would get a voltmeter and check to see if there is 12 volts on the power side of the fuse socket, if there is power when the ignition switch is on, then the circuit is good to that point and you need to chase down an open in the circuitry between the fuse and the windows. A likely place is in the master shut offl. Usually the driver has the ability to prevent the other windows from being operated and that switch or the connection to it, could be your problem.
If your saying the blower runs intermittently, I'd start testing at the blower motor when problem is ongoing, if good voltage and ground with no blower action, suspect the blower motor. Did you use a test light to check voltage at fuses, as you can see, one fuse goes hot with the key on, the other fuse is hot all the time. The top wire in diagram for blower motor is voltage, the bottom wire is ground.
Any motor that uses brushes and the brushes are worn badly, the motor may run intermittently.
Check for power and ground at the motor (with switch up and down, powers and ground will reverse). If you have power and ground, at the motor, you probably have a faulty motor. If you don't, then there is probably a break in a wire, usually where the harness passes through in the door jamb. Actually first after removing the interior door trim, try to roll down the window while tapping on the motor with a small hammer. If it works, replace the motor.
Likely you are looking for a 30 amp circuit breaker...(Looks like a small rectangular metal fuse) But...if the power door locks work, i don't think that it's bad (serves locks & windows) My diagrams show a bunch of diodes and resistors inside the master (drivers) door switch, but I've had a few apart and never saw any. (embedded?) Personally I don't see anything that shows me reliability built into the switch...It's a really "iffy" design (one in my niece's Jeep only works when the sun shines on the drivers door) There is also a control module associated with the windows but I've never needed to replace one and the manuals never tell you where they are! Check power at the switch and check harness where it goes through the rubber boot between the door and body. at least 80% of problems I've seen are either the switch or that wiring. Wires can be spliced and you can get a decent used switch at most scrap yards. Good luck...glad they aren't stuck down!!!