My speeodometer stays on 20mph when the car is not running it does not go back to 0 when i start rollin it starts from 20mph what is the problem? I have a 2005 pontiac sunfire.
Not likely an electrical problem newer speedos like your car are controlled by electricity but if it stays there after your car is off and or reads the right speeds past 20mph then not likely electrical. likely a chunk of something fell inside and is just jamming it there have to take it apart and rip it out unless your lucky enough for it to rattle out somehow, could always give it a good punch and hope it shakes out.
This is in the speedometer unit itself. either purchase a known good part from an auto recycler or people still rebuild these. on these, they are individual little motors inside and they will probably just replace the speedo motor and reseal it. unfortunately you can not purchase these parts yourself.
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