i have a 2nd gen 3sgte and an s54 trans. the cluster is usdm. nothing is reading on the speedometer or the odometer. everything else on the cluster works. i also verified that the cluster works.

i tried looking up the speed sensor on alldata... not much help. i need help! i was reading that there are two speed sensors? any tips that will get my odometer and speedometer to work will be appreciated!

This post has been edited by garin: Sep 28, 2011 - 1:18 PM

Its just a wiring mistake on my part when I did the wiring harness for the car. A lot of people make the same mistake as I did when doing the harness because it the circuit is a bit tricky.
Do a search, I remember posting some detailed instructions on how it fix this in someones thread a while back.

There is only one speed sensor.

This post has been edited by lagos: Sep 8, 2011 - 5:39 AM

haha thanks! lol any idea where the tread is?

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i say its just a bad speed sensor. those s54 sensor go out really easy ive had to replace two in the last 6 months on my 3sgte swap

i did a little research. can anyone lead me to wiring for the s54/2nd 3sgte swap! thanks

can anyone shed some light?

well if memory serves, 2nd gen 3S-GTE's were matched up to a cable driven speedometer transmission. with your swap you would have to build the wiring from the electronic speed sensor to the harness for speed inputs.

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hes using the S54, AKA the stock trans.

there are a couple diagrams in the FI stickys.