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oharris · Joined: 06 Oct 2014 Posts: 37 Location: Peyton, CO

Anyone know about the mileage counter for the lamda system? What is the output like? I assume it puts out so many pulses per mile, anyone know the spec? Could it be used as a speed sensor on an EFI conversion? Also the Haynes manual says it's on the left front spindle, but I don't remember any wires on the left front spindle. Edit: I guess it says it's on the "left front wheel housing". I assume that means the inner fender?
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'80 931

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Pretty sure it's a simple mechanical counter. The speedo cable that goes through the spindle to the outer grease cap attaches to the bottom of the counter box, and a separate cable goes from that to the speedometer. I've not looked at the guts of the counter box to see how it triggers the light on the dash.
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erstwhile owner of just about every 924 variant ever made

procyon · Posted: Fri May 27, 2016 1:06 am Post subject:

On my '80 there is a box in the middle of the speedo cable that I believe is the mileage counter. I don't remember any wires on it but I will have a look next time I am in the shop. Mine is broken, so might not be the best example.
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1981 924 N/A (Now the parts car)
1980 924 N/A ( 5 bolt discs and better paint) MS II V3.57
2003 Subaru Baja
2021 Maxda CX-30

oharris · Joined: 06 Oct 2014 Posts: 37 Location: Peyton, CO

Yeah, I did some more searching and it appears that all it does is switch on the light. Kind of curious how it works mechanically. Must be like an odometer with a switch.
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'80 931