Leaking VSS Variable Speed Sensor

[rmiller64]

With just 30 miles on 8442 T5 transmission the VSS in the tail shaft is leaking ATF through the mechanical cable receptacle. From what I read in other forums it's just a matter of time that the driven gear will walk up and down on VSS shaft without presence of a speedo cable installed to hold in position and start to leak. I have pushed a small rubber plug in behind the green o-ring for now. Some fill with RTV or JB Weld.

I see that the Napa replacement VSS306 has a plug already install. I read that the Thunderbird used a VSS that only had an electrical Dongle but can find a part number for it.

What have others done to fix?

45094

[MisterAdam]

i used the NAPA version.....actually just removed the plug and installed it into the VSS i originally used.

[edwardb]

This question comes up a lot. The VSS with the mechanical cable connection will eventually leak if a cable isn't plugged into it. Best to replace with the correct VSS plugged from the factory. A Standard Motor Products SC37 or equivalent is what you want. Available at many parts stores, Summit Racing, etc. Breeze Automotive (forum vendor) also sells them.

[FMJ]

My T5 transmission also started leaking from the same place after less than 100 miles. On a positive note, it'll be far easier to replace the SC37 sensor as opposed to the other possibilities for a leaking transmission. :)

-Fred

[rmiller64]

Update, I found a rubber plug in tool box about the same size as you would see as a dust cap for brake bleed fitting on the caliper. Fit snug in hole and leak gone. Will check every couple hundred miles