Speedometer very erratic

[cdover73]

Is there a known issue or fix for an erratic speedometer? I have a 2016 750hdi and lately the digital speedo ranges way off the scale compared to how fast I'm going. For instance, at max speed I typically get about 23 mph, but now it may go up to 80-90 mph. It's progressive also. The faster you go the more it gets off.

Anybody had this problem or know of it? Where is the speed sensor located? Could it be faulty or need a good cleaning? It's not a show stopper, but it's annoying and I would like to correct it. No reason a brand new machine shouldn't work properly...

Thanks,

[ARGOJIM]

Probably needs to be reset. Contact your dealer.

[desh]

cdover,
i noticed last week end my 2009 avenger started the same thing,
hours still works fine,
but the speedo goes bezerk and millage and speeds are faulse

let me know the cure if you find it

thanks

[ARGOJIM]

Look at your lcd and see if it is on MPH or KM, big difference , easy enough to unknowingly touch by yourself or a youngster.

It may be in Canada mode now.

[desh]

hahaha
yes it is in canada mode

problem is that it does it in usa mode also

thing we have an international issue
hahaha

[wrench9]

There is a hall sensor on right hand side of machine that the speedo gets its signal from. Magnets are embedded in the shaft and the sensor reads the revolutions it is on the right side of machine just in front of your feet. The sensor could be going bad or a bearing on shaft could be going bad thus increasing clearance causing it to lose signal or it may need to be cleaned of grease or the gap adjusted between shaft and sensor. Try cleaning it first there are 2 nuts for clearance adjustment. Sometimes the cable coming out from the sensor gets brittle from the heat and cracks causing a bad or noisy signal which causes erratic readings in this case you will need to purchase a new pickup around 40.00 I believe. I have been through this several times on other machines it is not a big deal. The RPM and hours comes from the external alternator if it is equipped

[ARGOJIM]

Yes a quick sandpaper scuff may cure it, if you're lucky.

[desh]

thanks guys
i will take a peek at it when i have the chance

thanks

[beagle man]

I think you probably have some brake dust and metallic dust from your brake disc. The magnets likely will look fuzzy, just wipe them off with a rag. Most of the zero speed switches I have worked on are spaced the thickness of a dime off the magnets. Best of luck.

[wfo]

WHAT !!!! a speedometer on a argo ? they only go 20 mph WHAT THE.