I dunno if it's right but I think I got it off this forum.
[attachment=30721:speed_signal.jpg]
The reed switch is in the cluster.
4A-C cars don't have check engine lights.
<div class='quotetop'>QUOTE (FKN16v @ Sep 6 2008, 10:44 PM) </div>Correct me if I'm wrong, but the speed sensor wire is connected to a reed switch/sensor on the gearbox? and feeds back to the ECU. I'm a little hazy on the exact link from ECU to engine check light - I would assume that the signal is also reliant on the operation of a number of engine sensors. In the oz ae86 what drives the engine check light?
Chris.
I dunno if it's right but I think I got it off this forum.
[attachment=30721:speed_signal.jpg]
The reed switch is in the cluster.
4A-C cars don't have check engine lights.
<div class='quotetop'>QUOTE (Ken @ Sep 10 2008, 12:25 AM) </div>As ken has shown, there is in fact a speed sensor within the ADM AE86 cluster from factory. Pretty simple to wire in also, just 2 wires.
This doesn't explain it coming off an on depending on how I'm driving.
The speedo has fucked out(Needle doesn't move and k's don't count) and it has been coming on since then roughly. But when I boot it it goes away. Hence my thinking for the O2 sensor since it does nothing unless you're at a constant revs just cruising.
Thanks Ken. I've chosen to ignore the speed signal on my build, infact, I think that wire is feeding something else now.
Dish - why don't you fix your speedo and see if that helps? My speedo didn't work for a while when I first got mine, but Ken points out no check engine light on ADMs, so I don't know if it's related.
I'm pretty sure it's a matter of pulling the cluster out and taking it to an instrument place and leaving it there. Which if I get pulled over with no cluster, I don't think that's going to go down well. As said in my other theads, having my car off the road is a major problem as I have to travel around frequently and it's my only car/way.
Have you taken your speedo cable out and checked that it's still in one piece. It's not uncommon for them to snap. That was the problem with mine. If your cable is in one piece I have a spare cluster which you can borrow or buy (I'm in brissy) while you have your looked at. If your cable's shagged it's probably at the elbow near the gearbox, and from memory the st141 has a similar attachment, but better made (search for thread on toymods).
Chris.
The cable seems ok on the gearbox end. Still turns. Haven't checked the cluster end as I'm still trying to work out how the motherfucker comes out. Got other shit to worry about at the moment so this is the last of my troubles (Dizzy is fucked).
<div class='quotetop'>QUOTE (Dish @ Sep 10 2008, 09:25 AM) </div>Its your speed sensor.
Learn how the ecu reads and uses the speed sensor and you will see why it comes on and off depending on your driving habits
Insert witty comment here....
So because the speedo cable/counter shat itself. It's causing this to happen? Fair enough.
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