Iv read where the pump pressure shouldnt fall after the pump kicks off and was wondering if it does (like mine is) should I go ahead and replace the pump?I dont seem to have any pressure problem or running problem just falling very quick after it kicks off.Im also useing a pump i got from a geo storm I bought about 6 years ago for $130 bucks.I junked the car but kept the pump becaus it cost so much and lifetime garuntee.I check the specs and its pressure was close to the tpi pressure(actually a little more)so i just threw it in.But should I go ahead and change it out and try to get it to quit dropping so quick?