Koenig-Specials 928

Is anyone using or consider using a GPS enabled Speedometer such as this one from Autometer (no affiliation)?

Am having problems with my speedometer.
Can't seem to get the needle to move smoothly.
Been months. Checked all the wiring from the trunk etc.
Found no continuity problems . Needle moves in steps.

All other gauges operate normally.

SeanR

I did install one a few years back, the owner ordered it and the only bad deal is he didn't get the one with a remote trip-odo reset. I think it's a great product from Speedhut.

Adk46

I didn't know there was such a thing. Speedometer error should be a thing of the past. But GPS speed is not entirely reliable either, moment to moment.

Longer term GPS data could be used to calibrate the normal speedometer. Or something like the system in an optical mouse. Put new tires on the car, it would soon make a correction. Most new cars have GPS built-in, for one reason or another, so car makers shoul be doing this already. Maybe they are.

jetson8859

IIRC Shawn Stanford just installed one and posted not to long ago. His name is user name, hopefully he will respond otherwise shoot him a PM

Speedtoys

I wouldnt..because well, neat toy.


GPS's measure where you were, not where you are, and can have issues for any number of uncertified hardware reasons.

Speedtoys

They are not.

It lies, and any given day, anywhere, may not work at all.

Cars use sensors measuring the rolling movement of the car.

oldfrat

I just keep my portable GPS on my dash. It is easy to see and to note when the speed reading turns from black to red.

Brad

Shawn Stanford

I did just install one, and it works well. It usually boots before I'm at the end of the alley, sometimes it takes a couple of minutes. That's not a problem for me because I generally know how fast I'm going on surface streets without having to check.

To the OP: Mine isn't a Speedhut, it's a Chinese piece I picked up from eBay for about half the price of the Speedhut ($125-ish). The needle doesn't move in steps so much as it lags a little.

The only other issue with it is that it is also meant for use in boats and the dial is under a clear plastic dome, which catches reflections. I would have taken it off on installation, but I wasn't confident I could do so without breaking something. The reflections are annoying, but not a huge deal.

It's nice to know how fast I'm going again!

murray928

I use a Garmin Nuvi dashboard navigator (no affiliation) which shows speed and warns if speed limit exceeded. Little or no variation with cluster speedometer.

WallyP

Or you can send/take your speedometer to a good speedometer shop and have it cleaned and lubricated.

Koenig-Specials 928

Thanks for all the info folks.

Wally having the speedometer cross Customs two times plus shipping sometimes makes it cost prohibitive as well as risky. My daughter received an empty iphone box from the brokerage and still waiting for a refund. I cannot risk losing y speedometer.

I have an old Pioneer Avic GPS unit that has a speed signal connection at the CE panel.
Sean/Shawn: for this purpose, which wire at the dash am I cutting and sending the new speed pulses to?

Please and thanks

rbrtmchl

hessank / Fred -

Have you tried a speedometer app on your smartphone?

Koenig-Specials 928

Not really.
Right now I read my speed off the data on my Pioneer Avic Nav unit.
I really want the speedometer to work as well

Speedtoys

I believe there is one somewhat local to me here in San Jose, CA.

Speedtoys

Ya..they DO work, but they present challenges to fighting a ticket, or to argue for it's accuracy.

The reason that $200 worth of tech cost $20k in a plane GPS, is the demonstrated accuracy and certification of VERY accurate under a range of conditions that a $8 SOC GPS is not build to provide.

And, there are constant NOTAMS concerning GPS testing that can cause GPS issues over many 10s of 1000s of square miles of the US on a regular basis.

They;re cool, but only measure where you were in the past.

Fix what ya have.