2000 bulldog vdo speedometer
- Thread starter dtmmil
- Start date
FrankBDPS
Well-Known Member
Before you give up on you're speedometer go to the top of the transmission from the right hand side. There is a small hump looking thing there. That is you're speedometer pick up or sending unit. Carefully remove it. They are magnetic and collect all the fine metal shavings from the transmission. Clean all the metal shavings off and take a test drive.
I hope that helps. Good luck. If you decide to go with a new speedometer I might be interested in you're old one.
Frank
I hope that helps. Good luck. If you decide to go with a new speedometer I might be interested in you're old one.
Frank
Take the speedometer out and look at the circuit board on the backside. They get some corrosion from condensation over time. Scrub the contacts on the back and clean them up and plug it back in and see if that fixes the issue.
Sent from my Pixel 3a using Tapatalk
Sent from my Pixel 3a using Tapatalk
Yep, see all that brown rust crap? That shouldn't be there. A light wet sand paper should knock it off, 1000 grit or a wire brush should work.
It's not as bad as some I've seen but it's enough to cause issues as the rust is actually making contacting on multiple circuits that aren't supposed to be. Hopefully cleaning it off works for you, got nothing to lose at least. Keep us posted!
Once you clean it and test it, if you want to help prevent it get some conformal coating to put on there. It was applied originally, I can still see it in a few spots, just doesn't last forever.
Sent from my Pixel 3a using Tapatalk
Last edited:
Neverbroken48@
New Member
I have a 2002 bd mastiff and the cod speedo has “Pulse, Adjust, Auot CL” how do I clear that up?
BigDogRick
Well-Known Member
take a look at this link. It also tells you how to manually calibrate your speed reading.
Neverbroken48@
New Member
I have tried all of that and it will not go back to displaying the mileage.
Mikeinjersey
Well-Known Member
Welcome from NJ,
Give this a shot.