Just recently my speedo started going up and down when i let off the brake, most of the time it will go all the way to 150 then fluctuate back down to whatever speed im going. The car was never tuned after my gears so it is off my 15 mph if that has anything to do with it. I really want to get this taken care of quickly because im selling my car and dont want it still doing this while someone is test driving the car so any help is appreciated

 

is your car shutting off when the speedo flutters?

 

vss is probably messed up

 

nope.

 

what is vss

 

When gauges loose power supply or are disconnected the go to the top, Im not sure of all the plugs on the speedo but i would check them

 

well now that i think of it my battery was pretty low the other day then it went back up, maybe ill try disconnecting it and see if that works

 

vehicle speed sensor, located on the tailshaft of the transmission