nope wrong to the above two.. you have a bad vacuum line these lines rot out over the years, however they are easy to replace.. pop your hood find the little line most likely one of the 1/4" lines replace it..
just trace all of the little black lines from in intake, you'll find one that has a crack and is sucking air.. that would be the bad one.. i had a 96 s-10 4.3l and that happened to me before.. the brake booster rarely if ever goes bad
just trace all of the little black lines from in intake, you'll find one that has a crack and is sucking air.. that would be the bad one.. i had a 96 s-10 4.3l and that happened to me before.. the brake booster rarely if ever goes bad