bizarre stalling behaviour 87 4kcsq

[John Larson]

Robert said:  " When I clean my ISV I like to lube it a bit afterwards; 
silicone spray
or the like.  Possible it's _too_ clean?  Make sure the contacts are good
too- clean them and use some silicone grease to seal it up on reassembly."

Per Bosch and various auto manufacturers, NEVER use silicone products in or 
around the intake system.  It kills the O2 sensor.  HTH, John