speedometer problem with engine off!

[NemesisTalon88]

my car hasn't ran for 1 year now after all the mods i am almost ready to do my first start! so today i decided to hook up the battery to check if all my gauges and electrical works..i noticed my fuel pump primed and all my lights and after market gauges work good except for my GAS gauge witch read E when i clearly have a half tank of fuel so im gona have to go back and check my Full blown double pumper and check and see if my floater isnt rubbing on something. but what has me thinkin is why my speedometer reads 20MPH? right as i turn the key it goes up to 20mph and stops anybody have any ideas what it can be? i checked the engine bay to check and see if the speed sensor is hooked up and it is...so im LOST

 

[TALONTRAX]

The only thing I can think to tell you is to pop the sensor out,& with the key on, spin it with a drill & see if the speedo reads speed/speed changes with changes of drill speed ? ? ? And possibly after that test it will return to reading 0 again . . .

 

[NemesisTalon88]

The only thing I can think to tell you is to pop the sensor out,& with the key on, spin it with a drill & see if the speedo reads speed/speed changes with changes of drill speed ? ? ? And possibly after that test it will return to reading 0 again . . .

hmmm thanks man i guess ill try that? im thinkin maybe it got damaged? ill have to pull it off and see..