Question about 1990 Oldsmobile Eighty Eight
Sounds like you may have a vacuum leak. You need to look closely around the carb/intake area for any disconnected small rubber hoses. Also check a fat rubber hose (1 inch or so) which goes to the big drum looking thing drivers side firewall - part of the brakes power booster system.
Look for hanging loose tubes/hose or worn through by rubbing etc.. Try to replace tubes to closest point where it looks like it goes. May have to cut a small peice off the end if it's stretched out and loose fitting.
Hope this helps
Posted on Apr 10, 2011
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Posted on Jan 02, 2017
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