Hi Kathaar,
Congrats on your first car. It's a really good choice, to say the least.
I had the same problem with my tachometer. [It happens over time with these cars] I found this fix on this forum, which worked perfectly for me.
If you notice that your speedometer needle sits a little below zero or drops below when the car is off, then I'm fairly certain this fix will work for you. :)
This image shows what I am referring to. It could also happen when the car is on: [Disclaimer: This is not my photo, nor is this my car. This is a 1991 LS400 with a tachometer and speedometer needle that needed calibration]
Here is the text from that post:
Here is ramnozack's profile, to cite a source.
