Hi all, The little white resistance element can be moved on it's mounting screws if your careful. Then the wiper will contact a fresh area of the resistor surface. I have had to carefully open up the mounting holes to get some to move enough to be effective, but it has almost always saved a badly worn one. Mark ----- Original Message ----- From: "JM/CO" <jmerritt2@CAPECOD.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Thursday, July 10, 2003 3:49 PM Subject: Re: AFM resistance test
> Been there, done that-- > I would strongly suggest that you remove the AFM ( not difficult ), clean it > up in some gas, remove the cover, and carefully examine the thing. The > little white resistance element is clearly visible, and wear is readily > apparent. As you can see when you examine the critter, the resistance > increases ( or decreases ) in steps, rather than in a continuous manner. I > would love to locate a source for these elements, which were manufactured by > Bournes, a company that specializes in variable resistors. It is this > critical component which fails. The rest of this ( rather expensive ) unit > will last forever. > Chuck > '83 Westy > '84 XJ-6 > ----- Original Message ----- > From: "Jeff Hammerstrom" <speakerdesign@MSN.COM> > To: <vanagon@GERRY.VANAGON.COM> > Sent: Thursday, July 10, 2003 3:52 PM > Subject: AFM resistance test > > > > Does anyone know what the resistance should look like as you move the air > > flat and measure between pins 2 and 3? Bently says the resistance will > vary > > but that's not much info. Is a linear or log progression? I know it's > never > > going to be closed while the engine's running so is there supposed to be a > > step in resistance as it moves from rest and then a progression until it > > fully opened? From what to what values? Any help here would be > appreciated, > > mine may be bad. > > Thanks > |
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