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Discussion Starter #1 (Edited)
Hello there. I have a 1976 99GL and recently it has been backfiring on deceleration and gear changes. I've done some research and believe that a faulty diverter valve may be the culprit however I have not been able to find the diverter valve in any of my Saab literature. I was wondering if anyone could shed some light on the topic and whether or not a diverter valve could be the problem and what else could be going on. Thank you much!

Also! While examining my engine compartment I noticed that on the opposing side of the throttle valve there is a electric switch that is pressed after the valve opens so much. I am wondering what this switch does and if anyone had an electric diagram for the wires as both of my leads are missing. :eek:
 

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I see sounds swell thanks. Anyone knw about the switch? I could take pics if you dont understand what I mean...
 
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