"I dont know if the problem I am having now is a vacuum leak, but my old car had a vacuum leak and it felt the same as it does now except its totally different symptoms. Like my Civic does it now only when I'm accelerating at around 45mph but only sometimes, my old POS car only did it all the time at idle."

Did you figure out if it was indeed a vacuum leak or where you able to figure out if it was another type of ailment to your vehicle? I would gather from what you said about your earlier vehicle that it probably isn't a vacuum leak if it doesn't do it all the time in idle.

JD
Autopart Locater
Mobile, AL