probably a vacuum leak. Check to see if the hose connecting to the
vacuum tank on the firewall came off. On my car the vac tank is to the
left of the washer pump. The hose connects on the bottom . There may
even be a plastic valve connected to the hose like on mine.
You might also have a bad vacuum diaphram or loose hose under the
dashboard. That would require removing the lower black dash trim panels
and listening for a loud SSSSSSssss noise.
1991 Pontiac Bonneville LE
3800 V6 ( C ), Black/Slate Grey
_~_~_~299, 999 miles_~_~_
~~~The Former Fleet ~~~
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