If the speedo's only a constant 2MPH off then your tach's screwy or your igniter is... Roll the car slowly across a measured one mile segment of road and see if the odometer is reading accurately. If it's right on the mark just more the speedo needle to set everything right.
And if your speedo is 2 MPH off at 10MPH and still only 2MPH off at 100MPH feel lucky, the speedo was blessed by god himself.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|