87 Toyota 4Runner Almost stalls when Clutching

Very Strange Issue here. I have an 87 4Runner 5speed 22RE that
recently started stalling when driving down the road. It doesn't seem
to ever stall or attempt to stall out when revving it up without the
vehicle moving, but I have determined that the when ideling and
stopped, it will almost stall when depressing or releasing the clutch,
the check engine light comes on and it almost stalls but then catches
and the light goes off. This happens about 75% of the time when I was
troubleshooting, so it is somehow related I started thinking vacuum,
but as far as I know there are no vacuum lines involved with the
clutch. When driving down the road it will do the same thing when
clutching or right before fully depressing the clutch.

Any ideas would be greatly appreciated. Thanks