steiner_5000

I posted this question once before and no one replied but I really needhelp with this becuase I just got pulled over because of it. My speedo is off, from 0-40 the needle wobbles back and fourth and from 40 and above it seems to be 10 over. I had a freind follow behind me to tell me my speed. Could this be the speed sensor or speedo gear? I really need help with this fast before I get another ticket.

samseed101

Did you or a previous owner ever change the rear end gears and change the speedo gear in the process?

Blckstng93

Since you know its 10mph off above 40, just drive 10mph slower. The wobble is probably a sticking speedo cable.

Whats gear you runnin?

steiner_5000

It does it in all gears if its under 40. But it wobbles bad enough you cant tell how fast you're going under forty(I got pulled over doing 38 in a 25). And I have no Idea if the owner before changed anything.

nitrous_bob

he is talking rear end gear

the speedo is calibrated for the rear end gear by the driven gear on the end of the speedo cable

when you go from stock to say 3.73 gears you will be about 15 mph UNDERregistering, i'd bet there were gears in the car and someone bumped back down

you need to know what rearend gear you have, by jacking up the back, marking the tire and driveshaft and making 1 complete tire rotation

count the ds spins......if it spins 3.5 times you have 3.55 gears just over 4 turns = 4.10's etc

then you need to get the proper driven gear for your application.....and the wobble is from a sticky cable most likely

check http://www.ddperformance.com for the speedo gear guide