Re: Did your purge valve........ - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Did your purge valve........
Posted by Dean (more from Dean) on Thu, 22 Jan 2004 07:44:52
In Reply to: Did your purge valve........, Gabor, Thu, 22 Jan 2004 06:32:34
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The purge valve does not operate until the engine is warmed up and it never operates at idle, only partial (non boost) loads. This is done to not upset the mixture or air flow at idle and to not increase HC emissions that already occur at a cold start.
So I cannot see that it would make any noise during a cold start.
Someone stated that a split PV hose was making a vibration as it leaked. The PV hose to the TB sees manifold pressure/vacuum all of the time. If a purge valve was stuck open, I can't see that that would make noises.
posted by 66.139.123...
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