IMO it is unwise to tear into an AFM unless you know it is not working.
Get it out of the van.  Study the circuit diagram to find the right pins on
the connector.  Connect a 9v battery across the ends of the
resistance path.  Connect a voltmeter from one end of the resistance to the
terminal for the sliding contact.  Watch the voltage as you SLOWLY move the
flap thru its whole motion.  The voltage should change smoothly with no
drop outs.  If there are bad spots in the resistance path, you may be able
to move the circuit board slightly to give the slider a fresh path.  Good
luck.

Larry A.

On Fri, May 8, 2020 at 10:12 PM Randy C <rcicoryell@msn.com> wrote:

> Hey all.  Would love to hear any thoughts on this.  Is the Air flow Sensor
> difficult to re-build?  I'm guessing that may be my problem.  82 air
> cooled, Calif emissions.  I'm trying to bring her back to life.  I've got
> her to idle finally but when you give it gas, it bogs out 90 percent of the
> time.  The little flap/door in the Air Flow unit bangs real loudly when
> it's bogging out.  I've replaces most of my air hoses.
>
> New plugs/ idle stabilizer/ fuel double relay.
>
> Anyways, any thoughts?
>
> Thanks all!
>
> Randy Coryell
>