Date: Thu, 06 Jan 2005 04:41:24 GMT From: "James Sweet" <jamessweetnospamail.com> Subject: Re: c900 1984 - One or TWO Fuel Pumps?
"T" <tberknospamlobal.net> wrote in message news:2IZCd.6910$wZ2.3615nospamsvr13.news.prodigy.com... > Dave Hinz wrote: > > On Wed, 05 Jan 2005 22:00:51 GMT, T <tberknospamlobal.net> wrote: > > > >> > >>Does the 84 classic 900 sedan have two pumps? > > > > > > Pretty sure it does. > > > > OK, we're going with Main Pump/ Prepump setup. > > > > >>I know this particular car has a pump found in the trunk, on top of the > >>tank. I looked underneath and only saw the accumulator with it's in/out > >>lines and a vent tube to the atmosphere. It had no electrical connections. > > > > > > That sounds like the filter? > > > > No, I know CIS systems in general pretty good. I don't have much Saab > time though, I'm a mainly VW wrench. > > Under the car, right by the tank, right near the wheel is a fuel > accumulator. It has a diaphragm and a spring inside it's job is to > provide _some_ pressure to avoid the equivalent of vapor lock. > > > > >>Might it be likely that the main pump is forward of the rear wheels? > >>The situation right now is I am getting 12 to the two places that feed > >>the pump relay up front. I am NOT getting 12v to the pump I find in the > >>trunk, on top of the tank. > > > > > > I think that's called the "pre-pump". You need voltage there or you'll > > get... > > > > Yep, I get 12v at the relay in the engine bay but no 12v back at the > prepump. Resolder the circuit board inside the relay, that will likely fix your problem.