boost gage not working

I have a 1993 SSEI and one day the boost gage quit-everything seems to be connected-would a pin hole cause enough leakage to affect the gage?I have dissabled the air compressor but thats it,Im looking into a smaller pully for the super charger and i would like to have the gage working. Thanks jon

Is the boost the only gauge not working? On my 93 ssei the the whole instrument cluster went wacky on me. After pulling it out and fiddling with it I finally have everything working except the tach and compass. I still need to find a good one sometime and put it in, but for now I have what I need. If yours is just the boost gauge though I would say it might not be the instrument cluster.

I know on 97/03 W-bodys there is a vacuum hose for the boost gage under the snout of the SC.Id sart there and make sure that the hose is in good shape to the vacuum line running to the MAP sensor.

http://www.oqcgp.com/upgrades/gauges_1/map_vacuum.jpg


~Larry~