jeff1986

Noticed a fluid leak on my previously leak-free manual 1985 NA Z31, check and it's tranny fluid, apparently coming from around a sensor that sticks out horizontally of the passenger side, a bit to the front, and pretty low down.

Is that the speed sensor? That kind of what I think but would love confirmation from anybody who knows, my Haynes manual is useless on this subject (although it does list three sensors/switches to disconnect when replacing the transmission, the neutral safety switch, the reverse light switch, and the speed sensor, and on a Z32 tranny this is in the same place as the speed sensor...)

And last, maybe I just have to try car-part.com, but any place where I could find one if it needs to be replaced to stop the leak?

rogerz

switch for backup lights maybe?

jeff1986

Well I suppose disconnecting it would tell me what it is...

But more importantly, if I can't somehow re-seal it by replacing an o-ring or something, is there anywhere left that carries Z31 parts like this? I work at Autozone and can't find anything in our system... maybe one of the commercial specialists can track it down through their various suppliers, but I was hoping one of the Z car experts here would know.

Thanks!

jeff1986

Well, it's the back up light switch, and I found one that I hope will work on partsgeek.com...

ken99

Try looking at part no JA4238 in the Autozone inventory and see it the switch matches. This is listed as the backup light switch for a D21 Hardbody truck w/ the VG30E motor and 5 speed overdrive transmission (FS5W71C). Same drive train as your Z31. The only difference may be in the electrical connector.