My 91 2.1L engine in my 84 Westy, stored over the winter in my heated garage, developed an idle issue.

It ran perfect all last summer, and into the fall.  Last year, I added Cruise Control, and upgraded the fuel delivery adding the Bosch filter.  I suspected vacuum issues due to the Cruise, so I temporally discounted and still had same issue.

Today, I removed and cleaned all electrical connectors to Mass Air Flow, and idle, checked vacuum hoses etc.  Note, the plugged hose and line from the air filter has been like that since the engine was installed in 2006.

Now, once warmed up, it wants to stall when idling, seems to drive fine, however at lights, it will stall when starting up.

There are about 60k original miles on the motor.
Here is a video of the issue. https://youtu.be/g16MY8_78qo 

Any advise is welcome!

Thanks,

Jack R.
84 Westy Wolfie, N. of Detroit