Recently my speedometer plenty crazy needle jumping from 0 to 140mph I replaced the vehicle speed sensor, the instrument and it's still acting up
Feb 9, 2016 at 2:16 AM
HMAC300
✓Experienced Mechanic
48,601 POSTS
it may be a bad dash as they are digital and do that. check to see if getting power to dash from speed sensor. and connections tight on both
Feb 9, 2016 at 4:12 AM
RUBEN541X13
MEMBER
24 POSTS
Yes I replaced the speed sensor and dash twice I checked to see if there's power from the dash to speed sensor and there is
Feb 9, 2016 at 4:20 AM
HMAC300
✓Experienced Mechanic
48,601 POSTS
then it may be a bad dash
Feb 9, 2016 at 4:32 AM
RUBEN541X13
MEMBER
24 POSTS
It's a brand new dash
Feb 9, 2016 at 4:47 AM
HMAC300
✓Experienced Mechanic
48,601 POSTS
the only thing I can suggest then is to check ground at aback of engine, check the junction block on lh side of dash to see if it has a good connection, put some dielectric grease on speed sensor connection and see if that cures it. the yellow wire is for power and orange is return signal. I looked at an accord because you didn't give a model. I have no further suggestions other to have it looked at locally