There are cables inside the door panels that connect the Engine and window regulator. These cables can slip off their pulleys and barricade the window partway down, which may allow the window to travel up and down for only a few inches; they can also break, leaving the window stuck in one position. (You can often identify a broken cable because the motor continues to run while you hold the switch, although the window is not moving.) Remove the door panel, so you can slip the cable back into its pulley track or replace the cable. The cables are inexpensive, but purchase a Miata repair manual to walk you through this procedure.
Dirty Window Switch
Whether both windows aim working at the identical continuance, you may simply own a blown fuse. Analysis the automobile's fusebox; jewel a fuse labelled either as "Force WIND (30A)" or "P.WIND (30A)." Pull the fuse and transform it whether it is blown.
Slow Windows
A universal occupation is a window (one or both) that moves up or down amassed slowly than natural. This is generally bantam enhanced than a buildup of dust and dirt in the impel channel along the inconsequential vent window on the door. Disinfected the channel using a cotton swab and some denatured alcohol, then use some lubricating grease intended for employment on rubber and silicone with another cotton swab.
Loose or Broken Cable
Whether you posses a Mazda Miata with ability windows, there is a positive chance that you acquire had some Category of box with them. While the windows generally bullwork useful with no problems, it is not awe-inspiring To possess one window that stops partway down, or a window that moves slowly when you up thrust or lower it, or much To possess both windows energy away immediately. Many of these problems are not expensive to establish, and can be handled by the owner himself.
Blown Fuse
On occasion the power window switches in the center console can develop dirty contacts that interfere with the operation of the switch. (This problem is not unique to Miatas; even home entertainment equipment develop this buildup over time.) Because these switches are fairly expensive, you may want to remove the switch, disassemble it, and try cleaning the contacts with electronic switch cleaner. This often solves the problem but if not, the switch may need to be replaced.
Failure of Major Electrical Components
As a general rule, power window problems are a matter of electrical failure or cable failure. If the relatively simple (and inexpensive) fixes already listed do not solve the problem, it is probable that a major component---a motor or regulator---has failed. Owners typically take their cars to a acquire these repairs; however, it is possible to replace defective parts yourself. Again, get a Miata repair manual to walk you through the necessary procedures if you take this route.
