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speedometer troubleshooting 92 Legacy SS 4EAT
Posted 11 November 2012 - 08:14 PM
My speedometer doesn't work on my 92 legacy ss and I believe that's where my intermittent CEL is coming from (as with the power icon).
What should I do to find why it isn't working? Start and end where? Is this also why my odometers aren't working?
I read a lot about stripping a gear inside the transmission that I would really like to avoid (if it isn't already)
Posted 11 November 2012 - 11:24 PM
i've had them go out on my 98 legacy and my 93 and both times the odometer stopped working along with a check engine light.
Posted 11 November 2012 - 11:29 PM
Posted 12 November 2012 - 03:15 PM
Posted 12 November 2012 - 11:38 PM
nothing will happen if you rotate the cable the wrong way. at least in my case nothing happened on my 93 and i haven't read anywhere that says otherwise. if the cable is broken, you will have more than just a sensor to replace. I would just try to find a few sensors at junk yards to replace yours... that's what i always did.
I really hope this ends up being your problem, all the symptoms lead me to believe that the sensor or you cable is the issue.
Posted 12 November 2012 - 11:53 PM
Pre-95 the vss was a reed switch in the speedometer head that was opened and closed by a spinning magnet in the speedometer. The sensor is part of the instrument cluster.
If the speedo doesn't work, but the odometer still does, the cable is still good and the problem is in the speedo head. If neither work, you need to check the cable. It can break, the square ends can round off, and it can be pulled loose from the back of the instrument cluster. That's the first thing to check, especially if you've been digging under the dash recently.
If you unthread the the speedo cable from the transmission (front diff housing actually on an auto) you can check that the spade end is still on the cable. Then use a small flathead screwdriver and gently try turning the shaft down in the well the cable threads into. If it turns freely, the plastic gear is stripped. It requires extensive dissasembly to replace. But chances are it's fine and your cable is either unhooked or broken.
Posted 13 November 2012 - 02:21 PM
Posted 14 November 2012 - 12:28 AM
The square drive cable tends to snap on the gen 1 legacies, my buddy just had it happen on his 91 SS 4EAT over this last weekend.
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