You have no detonation protection right now - Saab 900 Bulletin Board - Saabnet.com
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You have no detonation protection right now
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Posted by Bernie [Email] (#1501) [Profile/Gallery] (more from Bernie) on Sun, 1 Mar 2020 11:48:24 Share Post by Email
In Reply to: Re: wastegate control unit next to coil, Paul Willis, Sat, 29 Feb 2020 19:07:55
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Hello,
That solonoid is how the APC system controls boost and thus detonation. So you will want to replace it. The knock sensor sends a signal to the control unit which then controls the APC solonoid to control the boost. It is very likely that the solonoid was faulty before only allowing base boost and now that it is broken you have no boost control. Or you problem could be another component and you will only have base boost after replacement. But you want the APC system to function correctly so you don't melt pistons or worse. Good Luck, Bernie

_______________________________________ George Riggin Specialty Automotive Current Saabs 1993 900 Turbo Conv. 1993 900 Turbo Conv. Auto 2003 9-3 Conv 2004 9-5 Arc Sedan 2005 9-3 SS 4 door 2005 9-3 SS Conv 2007 9-5 Aero Sedan 1986 900 Turbo Conv A few parts cars also


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