Date: Sun, 26 Jun 2005 20:59:05 GMT From: Paul Halliday <pjghnospamyonder.co.uk> Subject: Re: c900 boost gauge at idle
in article 1119819140.694781.207630nospam2000cwa.googlegroups.com, ebarter at cartoonman5nospamo.com wrote on 26/06/2005 21:52: > What I was trying to say is that that cutoff happened only when I > disconnected the wastegate hose, which as I understand it is > effectively bypassing the APC system. When I did this I was getting > significantly higher boost than normal, almost to the end of the > yellow. Normally the needle will barely enter the yellow. I would > assume that something in between is normal? Yes .. That will happen :) How far into the yellow does it go? About a quarter of the distance? Sounds like you're running on "basic boost" ... Two things to check: 1. The APC box, which you'll find the LHS wing, must be connected. A bad connection there will lead to "basic boost" ... Poor performance :) 2. The APC solenoid valve on top of the radiator is another likely culprit. Check the power is properly connected. There is a further, more complicated procedure to check the function, but for now, just make sure it has power. Remove power from either and if your boost is exactly the same, then that confirms my basic boost theory. Paul 1989 900 Turbo S http://saab.go.dyndns.org/
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