Problems with aftermarket speedo calibrators?

[Alley]

I got gears so I have a speedo calibrator under the dash. My last one was really old and last year it started failing on a regular basis. I assumed it was heat related since it was after a while of driving and it gets pretty hot under the dash. The speedo would read 0 until I let it cool.

Anyway I got it replaced and everything was fixed. Well today after a couple hours of driving around just doing errands and stuff right after some spirited exceleration my speedo failed again and red 0 until I shut the car off and restarted.

So is this something that anybody else has had issues with that have speedo calibrators and having them get too hot?

 

[kenmo]

I just did a search on this issue....experiencing the same symptoms as you've explained. I assume I have a speedo calibrator since mine has gears, but I haven't located the actual unit yet. Gonna do some checking this weekend and see what's up. My car starting running a bit rough about the same time the speedo started acting up. She's about to get a full tune up, so I'm gonna do some poking around. Will update you if I find a fix.

 

[moparracing]

i've heard good things about:

http://forums.viperclub.org/rt-10-gts-discussions/643896-yellow-box-dialed-speedo.html

 

[ZYellow01RT]

i've heard good things about:

http://forums.viperclub.org/rt-10-gts-discussions/643896-yellow-box-dialed-speedo.html

Awesome info, guys...and just in time. Just ordered it instead of the Unitrax.

 

[vancouver-gts]

Got my Unitrax box from JonB.It's installed next to the computer under the hood.Speedo is accurate with all the heat around the box.