Sewing machine speed footpedal any make

Verify that the plug will work on your machine...

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Quite possibly the same issue as the following web site:

Jim Linda blog about Viking 6440 machine running

At any rate, if you don't feel comfortable dealing with it, it would need to be taken for service as it is most likely not safe to use as is.

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Make sure your foot pedal plug is firmly plugged into the machine.

you may find that the footpedal is faulty however there is a place on your footpedal where you can adjust the speed.. or sensitivity it takes a small screwdriver, have alook at your pedal is there a tiny screw or little hole maybe a plus or minus sign on it

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The foot pedal usually is a speed controller too, It is NOT a simple On Off, switch. You could no doubt wire another sort of controller to it though, they are all pretty much the same. In saying that though, SOME are just an On/Off foot switch well in this case YES you could do as you want. But it is unlikely you have one of those sorts. The controller is a Rheostat if you are handy enough I am sure one could wire another sort of rheostat to this machine safely. I have heard of the speed controllers from mains powered Drills being used in a pinch, the trick is to wire it up to the foot pedal.

i believe you need to break that circut
if you cant find the working foot pedal
maybe you could use a tattoo machine gem footpedal
they are breakers fairly cheap online and very manuverable when in tight spaces....

Sounds like you may have a blockage somewhere in the bobbin area that needs cleaning as this is normally what happens when it gets jammed. Reverse sewing can sometimes cause jams. Remove bobbin area and reassemble.

It sounds like you have a wire off inside the footpedal. If it won't work when you press it but, it will start on it's own, the wire is bouncing around inside the foot pedal box. It should either clip onto or be held in place by a screw. Other than this, it could be a broken wire, most likely where the wire comes out of the foot pedal, but this probably isn't the problem or, you need to call Ghost Busters.

If your machine is turning easily the following applies.
This is a carbon pile foot control (Not Electronic) and when in use for an extended period of time(like doing embroidery,piecing quilts) the foot controller will get hot. There's nothing you can do about this except wear shoes.
If your machine is not turning freely, then if needs to be seen by a technician to find out why.
sewman7