I know this has been covered before but not recently, so I'll mention it again
My experience has been that you can move the circuit board enough or slightly
reposition the wiper arm enough to get a marginal box to work again.  The cause of
the problem is first: dirt on the resistor surface and the wiper contact, or
second: the wiper has worn a path on the resistor surface. If careful cleaning
does not fix the problem, look for a wear arc.  Loosen the mounting screws on the
"resistor" board and see if you can get it to shift slightly so as to get a new
surface for the wiper to ride on.
Mark

Kristin Dewey wrote:

> Yay! I finally get to give someone ELSE advise for a change!
>
> Well, not really, cause I can't exactly tell you what the air flow meter
> (which I'm assuming is the same thing as the air flow regulator or air box)
> does....But I can tell you what happens if it doesn't do whatever it's
> supposed to be doing....
>
> My 84 was sputtering, cutting out (especially going up hills) and generally
> being a pain in the butt anytime we'd get anywhere near 2800 rpm, which
> happens to be a lot of the time. It would lose power especially between 2nd
> and 3rd gear (I have an automatic). This only happened intermittently and
> never when a mechanic was in the vicinity. After much distress and a lot of
> replaced parts, it turned out to be what my mechanic calls the air box.
> He pulled one out of a donor vanagon he had, put it in mine, and voila!  It
> runs like a new bus... gets better gas mileage and just plain feels right now.
>
> Kristin
> 84 Wolfsburg GL Westy~Wolfy
> 90 Subaru Legacy LS SW AWD~Althea
>
> <<I have been having a strange loss of power on my Van recently and am
>
> trying to get an idea what it could be.  Sometimes it will go days
>
> before cutting out but the whole time it just doesn't feel right?  I saw
>
> on a website a price for the air flow meter?  what does this do and how
>
> can I tell if Its bad??  I'm already going to replace the fuel filter
>
> and the air filter. any help would be appreciated. >>