1986 Chevy ck / temp sensor problem
 

I have a Chevy 1986 Custom Deluxe with a 5.7 eng.automatic, no a/c.
I changed the temp sensor,the wiring is getting proper voltage to the sensor,the fuse is fine but the darn needle is stuck all the way to the right reading hot. How do I fix this ???
Is this what's called a pegged guage ?
Please help, I'm just a gal who loves her truck.

d1986