The valve is between the inlet and outlet (the left side in your photo). The rest of the item (to the right of the valve) is essentially an electric motor that rotates the valve back and forth to regulate air-flow.

You should be able to stick a screwdriver in the orifice that's pointing down in your photo, and move the valve. I've had one of these get so varnished up, that I couldn't pry it with a screw driver... I had to let the carb cleaner soak to loosen up the valve, then I could move it.

A good way to test this is to run jumper wires from the positive and negative terminals on the battery to it while you have it removed. You should be able to feel, hear, and see it move when you connect/disconnect power to it. With the one I mention above (that was so varnished up) it wouldn't move at all when I applied power to it -- I thought it was shot. Once everything was loosened up, it functioned perfectly.

Good luck.


Jeff Pierce
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'93 945 Turbo ( one kickass family car ! ) 197K miles, '92 Mercedes 190E (my daily driver) 170K miles, '85 Jeep CJ-7 w/ Fisher plow 225K miles, ?95 Lawn Chief