Low Speed not registering in speedo
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Joined: May 2002
Posts: 88
Likes: 2
From: Shelby Township MI
Low Speed not registering in speedo
I recently cracked my differential at the track and had to replace the case. I bought a 2.73 diff and had my 3.42 internals swapped in. Now my speedometer is staying at zero till I get to about 15-20 mph then it picks up the signal and shows the correct speed. It only seems to happen from start. I don’t show any codes.
Thoughts?
Thoughts?
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
The speed sensor is offset from the gear in the 2.73 case, and doesn’t pick up the signal until it gets going faster. I had the same problem in my 02 Z, it had a 3.90 built into a 2.73 case. Replaced with a factory 3.42 unit and the problem resolved.
