Originally Posted by Jarrod
So I changed the spark plugs they were in dire need didn't change anything and in the process I found a vacuum leak. The rubber connector that connects two different sized vacuum lines to the side of throttle body couldn't find a replacement so for now I used f.r. electrical tape still no change.. I took the car about 180 miles to the illinois river this weekend then thought to maybe unhook battery for a couple hours to reset computer.. it now runs worse than when I started... I plan to check fuel pressure regulator tomorrow and check for more vacuum leaks with the carb cleaner method thanks for the input guys keep it coming.. I'll update tomorrow.. oh this is a 2000 buick lesabre with the 3.8 by the way
You have a vacuum leak at the vacuum lines that can NOT be fixed with electrical tape. Buy a can of carb cleaner and check for leaks. The vacuum lines and tee connectors DO get brittle and break on a car this old. Go to a good parts store and have someone knowledgeable come out to the parking lot and look at it. Vacuum tubing and tee connectors are cheap.