tach and speedometer problems
 

ok.... my tachometer and speedometer are screwed up.... as i just cruising up my street it says im go 140.... it does what ever it wants to do... like idle at 20 mph or what ever... and the tach is just as bad.... like say im on the freeway, the tach is chillin at 1 grand... im not sure exactly what it is... i was thinking maybe my speedo cable is stretched, but im not 100% sure. If anybody has could help i would really appreciate it. cuz it really sucks when a cop is behind me and i have no idea how fast im going.:wallbash:

has anybody had this problem?