Originally Posted by turbomar
An old trick is to use a propane torch. Crack it open w/o lighting it. Any vac. leak will suck in the propane, and cause the engine to rev up
Neat trick - I'll remember that, thanks.
Twice I have left the hose that goes from the TB to the sensor valve on the driver side fender ( not sure what it does ) off, and I got the surging idle syndrome ( SIS )