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Speed Cal Help

1K views 15 replies 5 participants last post by  MustangMatt96GT  
#1 ·
Well, my speed cal doesn't have the little red LED light lighting up when driving. It has power, and the fuse for the Cig lighter isn't bad. I just replaced the Speedo gear, because my speedo was notchy and not smooth. Well now the speedometer doesn't work. I noticed while going down my street, I pulled it back up the street, and took another car. Since it has snowed, I have not driven it. Do you think that its possible that the Speedo Gear isn't completely in the tranny? Any other thoughts?
 
#4 ·
You shouldn't even need the speedcal, just put the different gear on your VSS and call it done, that what I did, now im only 2 mph off instead of 18 off
 
#5 ·
ugh considering the 3.55 3.73 and 4.10 gear ratios are all under than gear, i would rather use my speed cal. Its worked flawlessly since June.
 
#6 ·
Oh, well there's always Nascar.........watch the tach baby. I did that for a while, anyway good luck with your Speedcal man
 
#15 ·
when you disconnect it does the speedo work again? Sounds pretty easy to me. If it does work you have a bad product. Why not just run a fused wire straight to the battery.