FYI. It is a feature.
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Member
2020 GTS Supertech 300 and a 2020 Royal Alloy GT 150
Joined: 25 Apr 2013
Posts: 26

Fri Oct 09, 2020 4:59 am quote
Good morning.

My Vespa is a 2020 GTS 300 supertech.

I rode it to work on Thursday with no problems. I went out to start it on my break and it idled just fine. It was on the center stand and I was not sitting on it. However, when I gave it gas it bogged down, stuttered and backfired. No CEL.

I had the dealer come pick it up. I was pretty upset since it only had 60 miles on it .... period.

So here's the fix.... Don't expect it to run well when you aren't sitting on it. Apparently, there is a switch that senses whether you are on it or not. If you are not, it just won't let you rev the scoot. It's all in the name of safety.

I picked it up from the dealer, rode it home and it did not miss a lick.

It might be a useful bit of info that may come in handy.


EDIT: It runs badly when on the center stand AND with the traction control engaged. Apparently, and unlike other owners manuals, this info is not in the one for the 2020 SUPERTECH.

Don

Last edited by desliderman on Tue Oct 13, 2020 10:24 am; edited 2 times in total
Molto Verboso
150 Sprint Veloce,Vespa GTS 300
Joined: 22 Feb 2010
Posts: 1149
Location: St Neots Cambridgeshire England
Fri Oct 09, 2020 5:06 am quote
Pardon? I've never heard of that!! are you sure??


Graham
Member
2020 GTS Supertech 300 and a 2020 Royal Alloy GT 150
Joined: 25 Apr 2013
Posts: 26

Fri Oct 09, 2020 5:18 am quote
louswheel wrote:
Pardon? I've never heard of that!! are you sure??


Graham
I would not have believed it had I not experienced it. I even tried it when I got the scoot home.
Hooked
Primavera 150
Joined: 17 Sep 2017
Posts: 456
Location: Long Beach, CA
Fri Oct 09, 2020 6:36 am quote
I'm thinking ABS/Traction Control. If the rear wheel starts to spin and the front one isn't, it cuts the throttle.
Veni, Vidi, Posti
MP3 500, GTS 250 (both 2008 MY), 2012 Honda NC700 DCT
Joined: 02 Mar 2013
Posts: 6172
Location: Madison, Wisconsin
Fri Oct 09, 2020 6:38 am quote
pokeyjoe wrote:
I'm thinking ABS/Traction Control. If the rear wheel starts to spin and the front one isn't, it cuts the throttle.
Very possible. Simple test; put it on the centerstand, sit on it, start it, rev it.
Ossessionato
In garage: Yamaha Tricity 155 Urban 2019 - MV Agusta 125 RS 1956
Joined: 21 Jul 2007
Posts: 4142
Location: Latina (Italy)
Fri Oct 09, 2020 6:54 am quote
My lawnmower has a device like this (also my two agricultural vehicles) but on a scooter it is the first time I hear something like this.
Madison Sully wrote:
pokeyjoe wrote:
I'm thinking ABS/Traction Control. If the rear wheel starts to spin and the front one isn't, it cuts the throttle.
Very possible. Simple test; put it on the centerstand, sit on it, start it, rev it.
Good idea!
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 254
Location: Sayre, PA
Fri Oct 09, 2020 8:18 am quote
The MP3 models have always had a safety switch in the seat. (Otherwise if you rev it the suspension will unlock and it will fall over).
Addicted
2010 S50 Modified "Punkin"; 2003 ET4 150 "ISO"
Joined: 18 Feb 2017
Posts: 526
Location: Deepinnaharta, Texas
Fri Oct 09, 2020 8:48 am quote
Greetings:

What Sully said. I'm betting there's no seat sensor. Just traction control doing what it's designed to do.
Hooked
2020 Vespa GTS Touring 300
Joined: 16 Feb 2020
Posts: 144
Location: Northern California
Fri Oct 09, 2020 11:03 am quote
Re: FYI. It is a feature.
desliderman wrote:
I went out to start it on my break and it idled just fine. It was on the center stand and I was not sitting on it. However, when I gave it gas it bogged down, stuttered and backfired. No CEL.
I'm pretty sure that behavior is documented in their own quaint way in the user manual section on the ASR. The part where it says not to do that.

You wouldn't want the scooter to come off the center stand with the rear wheel already in a high spin state would you ? That would be even worse than calling the dealer because their English is challenging you.

GTS-Centerstand-Wheel-3.JPG

GTS-Centerstand-Wheel-2.JPG

GTS-Centerstand-Wheel-1.JPG

Hooked
2020 GTS 300, 2011 LX150ie (hers), Bonneville T120
Joined: 09 Jun 2010
Posts: 440
Location: Florida
Fri Oct 09, 2020 1:04 pm quote
Learn something everyday.
Ossessionato
Blue GTS300 Super 2015, White GTS300 Super 2018
Joined: 01 Nov 2005
Posts: 2742
Location: Sydney, Australia
Fri Oct 09, 2020 1:15 pm quote
Easy test. Switch off the ASR and then try again.

Or else hold the rear wheel with your foot while it is on the centre stand.
Ossessionato
2015 GTS 300 Super (Melody)
Joined: 22 Apr 2015
Posts: 2635
Location: Asbury Park, NJ
Sun Oct 11, 2020 5:54 pm quote
Yes, It's a Feature, Not a Bug
If you think about it, it all makes sense:

- If you have the bike on its center-stand, and Traction control is engaged, and you give the thing throttle, only the rear wheel is moving…well, you can figure out the rest.
Member
2020 GTS Supertech 300 and a 2020 Royal Alloy GT 150
Joined: 25 Apr 2013
Posts: 26

Tue Oct 13, 2020 5:38 am quote
Re: Yes, It's a Feature, Not a Bug
amateriat wrote:
If you think about it, it all makes sense:

- If you have the bike on its center-stand, and Traction control is engaged, and you give the thing throttle, only the rear wheel is moving…well, you can figure out the rest.
Thank you. Traction control off when on center stand. I can imagine the frustration if it's in the shop and someone unfamiliar with this is trying to do work on it.

[/i]
Molto Verboso
2013 Vespa 300 Super, 2007 Burgman 400
Joined: 30 Mar 2014
Posts: 1785
Location: Minneapolis USA
Tue Oct 13, 2020 7:01 am quote
Amazing
You ModernVespa guys figure everything out.

Bob Copeland
Frost Bite Falls MN
Member
2020 GTS Supertech 300 and a 2020 Royal Alloy GT 150
Joined: 25 Apr 2013
Posts: 26

Tue Oct 13, 2020 9:56 am quote
Re: FYI. It is a feature.
bosco12 wrote:
desliderman wrote:
I went out to start it on my break and it idled just fine. It was on the center stand and I was not sitting on it. However, when I gave it gas it bogged down, stuttered and backfired. No CEL.
I'm pretty sure that behavior is documented in their own quaint way in the user manual section on the ASR. The part where it says not to do that.

You wouldn't want the scooter to come off the center stand with the rear wheel already in a high spin state would you ? That would be even worse than calling the dealer because their English is challenging you.
The references from your owners manual are not the ones for the Supertech. No wonder I was having problems.
Hooked
2020 Vespa GTS Touring 300
Joined: 16 Feb 2020
Posts: 144
Location: Northern California
Tue Oct 13, 2020 12:21 pm quote
Re: FYI. It is a feature.
desliderman wrote:
The references from your owners manual are not the ones for the Supertech. No wonder I was having problems.
Well you might like to think so, but those images I posted came directly from the Supertech PDF manual I received last year from Vespa. And not from the one I use for my scooter.

I can't believe your manual doesn't suggest something similar in some arcane round about way.
Veni, Vidi, Posti
2007 LX150 2015 GTS 2013 BV 350
Joined: 13 Sep 2012
Posts: 9329
Location: Fond du Lac, Wisconsin
Wed Oct 14, 2020 8:02 am quote
Re: Amazing
Bob Copeland wrote:
You ModernVespa guys figure everything out.

Bob Copeland
Frost Bite Falls MN
We're savvy AF.
Member
2020 GTS Supertech 300 and a 2020 Royal Alloy GT 150
Joined: 25 Apr 2013
Posts: 26

Wed Oct 14, 2020 10:27 am quote
Re: FYI. It is a feature.
bosco12 wrote:
desliderman wrote:
The references from your owners manual are not the ones for the Supertech. No wonder I was having problems.
Well you might like to think so, but those images I posted came directly from the Supertech PDF manual I received last year from Vespa. And not from the one I use for my scooter.

I can't believe your manual doesn't suggest something similar in some arcane round about way.
I'm not trying to be difficult but I did not receive mine from Vespa and just found it on a google search. It could be that this is an older version? The one I downloaded (ED. 03_04/2019 COD 1Q000743) is certainly missing that.

Be that as it may, thank you for helping me with my issues.
Hooked
2020 Vespa GTS Touring 300
Joined: 16 Feb 2020
Posts: 144
Location: Northern California
Wed Oct 14, 2020 11:16 am quote
Re: FYI. It is a feature.
desliderman wrote:
I'm not trying to be difficult but I did not receive mine from Vespa and just found it on a google search. It could be that this is an older version? The one I downloaded (ED. 03_04/2019 COD 1Q000743) is certainly missing that.
Then the google one you found is not up-to date.

I think perhaps you need a better dealer, as mine made sure to point out this safety feature to me before I left with the new scooter.

As a new owner you can get Vespa to provide you with a PDF version of the Manual that is for your specific scooter. It seems their site isn't working for me today; or possibly its that new Firefox update yesterday which broke it.
https://www.vespa.com/us_EN
http://manuals.vespa.com/

Last edited by bosco12 on Thu Oct 15, 2020 12:31 pm; edited 1 time in total
Molto Verboso
2013 Vespa 300 Super, 2007 Burgman 400
Joined: 30 Mar 2014
Posts: 1785
Location: Minneapolis USA
Wed Oct 14, 2020 12:25 pm quote
Vespa Owners Manual
desliderman,

Many dealers leave the manual in the under seat storage while the
Vespa is on the show room floor. These manuals get stolen before the
scoot is sold. Many times dealers will just grab one off another Vespa on
the floor if it is gone. I did not get a manual with mine.

I simply went on line and down loaded the manual. Not as nice, but
it works.

The same thing occurs at car dealers.

Bob Copeland
Minnesota
Member
Joined: 15 Jul 2020
Posts: 19
Location: Brea, CA
Thu Oct 15, 2020 11:04 am quote
Re: Vespa Owners Manual
Bob Copeland wrote:
desliderman,

Many dealers leave the manual in the under seat storage while the
Vespa is on the show room floor. These manuals get stolen before the
scoot is sold. Many times dealers will just grab one off another Vespa on
the floor if it is gone. I did not get a manual with mine.

I simply went on line and down loaded the manual. Not as nice, but
it works.

The same thing occurs at car dealers.

Bob Copeland
Minnesota
You are right Bob, I also did not get manual with my scooter.
Ossessionato
In garage: Yamaha Tricity 155 Urban 2019 - MV Agusta 125 RS 1956
Joined: 21 Jul 2007
Posts: 4142
Location: Latina (Italy)
Thu Oct 15, 2020 11:11 am quote
The problem is not to receive duplicate keys and / or the unlock code ... many do not think about it...
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