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[NoiseBoy]

Maybe we should try and come up with a possible cause for this.  I haven't had any problems at all. 

Those that have the issue, what is the link between you all.  Average temp in your location? Do you ride in all weather? How many miles average per day/week and average speed of your rides?

[WindRider]

Another couple of good variables to look for commons in would be:

-  Total miles and how many when the glitch started?
-  Date of Manufacture?
-  ZF6 or ZF9 Batt Pack?

[kcoplan]

Problems started at about 2,000 miles / 6 months.  I have bike #336.  Because I got the bike in September, most my riding has been in cool or cold weather, problems started in late March in cool weather.  My bike is a ZF6.

And I can't get Zero to answer emails or phone calls.
-Karl

[protomech]

3/2012 0 miles bought the bike
6/2012 3000 miles glitches start to show up, once every few days increasing to every day
7/2012 4700 miles I shipped the bike back to Zero
9/2012 5200 miles Zero returns the bike with new firmware (bike used to debug). Rode over the winter, 2 glitches on warmer afternoons.
3/2013 8000 miles Glitches return in earnest, every few days. Temps also start to pick back up.

9000+ miles now.

Bike #96, S ZF9.

[kcoplan]

Just spoke to Brock at Zero Support. ("Zero Support," now that's an unfortunate name).  He said I have to take the bike into the dealer (35 miles away) so they can "pull the logs" and send them to Zero in order to diagnose the problem   He said it could be the encoder, the kill switch, or the motor and they would need to see the logs in order to figure it out.  So that means at least two service trips to Brooklyn  . . .

--Karl

[expevride]

2012 DS same glitch as everyone else, really weird to just come out of nowhere. Was running great since the the big reboot reinstall of software in September. Total miles now 8785

[NoiseBoy]

I am getting something probably related now but different manifestation.  Noticed an odd noise during regen and a slight loss of power for a couple of weeks.  Then yesterday morning i pulled away from home and it was like riding a 50cc moped, hardly any power, much less than ECO mode, under 100A i would say.  Went to dealer and they are waiting for a diagnostic laptop.  Diagnosis seems to be an encoder error in the motor.

Its even worse today, to the point that i have to give the bike a push to get off the line properly and need a good runup to make it over hills.  Just hoping I will be able to get home tonight.

[protomech]

mehve had a similar problem on page 1.
http://electricmotorcycleforum.com/boards/index.php?topic=2800.msg12778#msg12778

Don't know if it was fixed or what, but I bet she's happy to have it behind her with the 2013 bike. Might PM her and see, or maybe she'll check in here.

[NoiseBoy]

It is now even worse.  I had to push the bike on the way home out of an underpass because it wouldn't pull away up the hill.  If i can get a good run up and hit the hill above 25mph its ok.  It looks like I have now sold my ICE bike so this comes at a very bad time!

I hope someone gets hold of the dealer software soon so that we can do some DIY repairs if necessary.

[BSDThw]

I have had a similar behavior when my throttle poti was defect.

Got your bike once a hit at the throttle?

I fear the throttle is a bit fragile.

[NoiseBoy]

Yes the bike fell onto the throttle side but that was a long time ago.  I will have a look at it tomorrow if i can, but don't want to do too much and risk voiding the warranty.

[BSDThw]

It has a 3 pin jack mine is on the left side where the wires go under the tank.
If you have an ohmmeter you can try to check it.

[NoiseBoy]

I measured about 350ohms between pins 1 and 3 when shut, and about 20 ohms at WOT.  Does that sound right?

[BSDThw]

I believe (but not 100% sure) it is a 5KOhm poti, so you should get ~5000 to ~ 0Ohm. I don't know what is pin 1, 2, 3 but you should see between two pins a stable 5KOhm and between the (other pins) 0 to 5K or 5K to 0 depending what pin you got. It could be that it will not go down completely to 0 but I never measured mine by my self.

If your values right I guess you need a new throttle.

[kcoplan]

Today my Zero started running rough while going around 60 mph = really briefly -- for about 1-2 seconds -- seems similar to what Richard230 described way back as Glitch 1.0 -- the motor seemed to be fighting itself.  Then the problem went away, and the bike ran fine for the rest of my ride into work -- did not reboot since I was not in a good place to stop and restart, and the problem went away.

Called the Zero tech to update him, and left a message, but I have not heard anything back from Zero or my dealer after they uploaded the logs last week.

So now I have rough running at high speeds, and motor cutouts at low speeds.  Sure sounds like the Glitch is Back!

--Karl