Do you have any codes?Also after you go past 65mph the speedometer drops to zero?
March, 21, 2013 AT 3:42 PM
Yes codes 420,446 once it passes 65 it drop down to zero I've changed the speed sensor on the tranny and still does it
March, 22, 2013 AT 12:48 AM
The P 0420 is a cat code the P0446 is evap vent control fault neither will cause the speedo to stop working. You need to have a professional scan tool scan your car and not a diyer scan. The professional scan tool can scan all the computers for codes. The diyer scan tools can only scan generic obd2 codes.