I've seen the topic of AFM spring adjustment discussed on this list for years now and I still don't understand how spring tension can affect the mixture in a closed-loop system. The O2 sensor (in conjunction with the ECU) ultimately determines the mixture based on the amount of O2 in the exhaust, right? So what does changing the AFM spring tension really do? Mark McCulley Seattle WA ----Original Message Follows---- From: Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM> Reply-To: Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM> To: vanagon@GERRY.VANAGON.COM Subject: AFC Spring Adjustment Date: Fri, 23 Mar 2001 09:23:25 -0500 Last night I'm looking at my old (spare) AFC and trying to figure out how to adjust the spring before opening up the new one this is in my '85 Westy. I want to lean it a few notches. It looks like there is a clip (looks like paper clip size wire) that is screwed down and retaining the large black gear. I want to turn this gear clockwise? If I remove the clip, how does this gear turn? I wasn't able to get the screw loose that holds the clip down. Does the gear lift and turn or what? Is clockwise leaner for sure? I only want to go 3 or 4 notches and try it with my voltemeter on the O2 sensor output. Jay _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com |
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