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Date: Mon, 10 May 2004 20:52:50 +0100
From: Alan Cole <a.colenospamorld.NOSPAM.com>
Subject: Re: 9000 turbo - strange coolant leak


Jean Paul, I just changed the hose this evening, and now it all suddenly makes sense. :) The change from metal pipe to rubber pipe confused me, plus I thought it was a vacuum hose going into the throttle body. Then I thought maybe the engine was sucking up coolant?!? What a strange design! BTW, the old rubber hose had started breaking up, and just fell apart in my hands when I took it off. I replaced it with some reinforced fuel line pipe which should last a lot better. Thank you, Alan Jean Paul wrote: > Hello Allen, > Let me take a stab at this. Its to late tonight to go down back to look at > my 89 9000 2.0L, but I think its similar to my 94 9000 2.3L. The pipe > enclosed in rubber that goes from the large plastic inlet pipe to the turbo. > Is a crankcase breather pipe hooked to the valve cover. Saab for what ever > reason ( maybe to heat the air being sucked into the intake, to cut down on > moisture in the engine) put a small heater hose,(if you would call it that) > that splits off and goes to the front side of the throttle body, and heats > it so that it does not freeze in the winter.The other side of the throttle > body the small hose is the return side I think and hooks to the pipe that > goes around the back side of the motor to the RH. side to the water pump. > The small three inch hose you talked about I had to replace on mine. I this > case water and air should not mix, just live in the same hose. > Jean Paul > 89 9000s > 89 9000t > 94 9000cset > > > > > "Alan Cole" <a.colenospamorld.NOSPAM.com> wrote in message > news:DRwnc.223$D%1.194nospamfe1-win... > >>My 9k developed a coolant leak recently, which took me a while to track >>down. I eventually traced it to the point where the crankcase breather >>connects to the air intake (just before the turbo). >> >>Right next to it, there is a small rubber pipe apparently going into the >>intake. The other end connects to a thin metal pipe which went off >>around the block somewhere. >> >>Anyone know what on earth this is for? Some primative form of water >>injection maybe? :o) It's the last place I was expecting to find >>coolant! Or is it a vacuum pipe and something else is leaking into the > > pipe? > >>Regards, >>Alan >> >>P.S. a similar thin metal pipe goes into the turbo and out the other >>side - are they water cooled? I thought they were oil cooled? > > >

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