Posted 11/29/2012 00:49 (#2722735 - in reply to #2722667) Subject: Re: 4720 problems
You need to clean you pressure transducer and flow meter with brake and parts cleaner. It has some slime or gunk in it. That should fix your problem. If it persist I would bet your pressure sensor is going bad. It also could be foam and air in the system. But more then likely it is just in need of a little cleaning.
4720 problems
