The Honda PCX / Honda Forza / SH Forums

Your predominant source of information for the Honda PCX 125, Honda PCX ESP, Honda PCX 150, and Forza. Now featuring a SH300i / SH150i subforum!
It is currently Sun Feb 25, 2018 4:26 am

All times are UTC - 5 hours




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Idling Stop Not Working?
PostPosted: Sat Feb 10, 2018 4:11 am 
Offline
Regular User
Regular User

Joined: Mon Nov 28, 2016 3:11 pm
Posts: 125
Location: FUZHOU, CHINA
Year: 2016
Color: WHITE
It used to work perfectly, but today, I found idling stop sign light up, but engine doesn't stop.

anything to do with cold weather, or does it signal something wrong with engine or ECU or what?


Top
 Profile  
 
PostPosted: Sat Feb 10, 2018 5:44 am 
Offline
Forum Benefactor
Forum Benefactor

Joined: Sun Dec 29, 2013 11:43 pm
Posts: 2276
Location: London, England
Year: 2015 125
Color: White
It is normally the battery, at least on '14 reg onwards vehicles. The ECU disables idle-stop should it detect the battery is not up to the job, as idle-stop used to flatten batteries on pre '14 models. It's a staggered graph and not just volts/amps in a linear fashion.
You can charge the battery off bike but good batteries do not normally go wrong, even if bikes are left outside in the cold for weeks on end. Poor or failing batteries are one of the most common issues on PCX / Forza 125's (someome recently posted this issue in their 1 yr old Forza 125, and it was the battery)
Never found a use for idle-stop on 4 years of commuting - for the very little fuel saving, not worth using it imho.

_________________
Image


Top
 Profile  
 
PostPosted: Sat Feb 10, 2018 6:13 am 
Offline
Regular User
Regular User

Joined: Mon Nov 28, 2016 3:11 pm
Posts: 125
Location: FUZHOU, CHINA
Year: 2016
Color: WHITE
iceman wrote:
It is normally the battery, at least on '14 reg onwards vehicles. The ECU disables idle-stop should it detect the battery is not up to the job, as idle-stop used to flatten batteries on pre '14 models. It's a staggered graph and not just volts/amps in a linear fashion.
You can charge the battery off bike but good batteries do not normally go wrong, even if bikes are left outside in the cold for weeks on end. Poor or failing batteries are one of the most common issues on PCX / Forza 125's (someome recently posted this issue in their 1 yr old Forza 125, and it was the battery)
Never found a use for idle-stop on 4 years of commuting - for the very little fuel saving, not worth using it imho.



Well, My PCX is exactly 1 year old.
I think I should check the battery voltage soon.

I usually do periodic 20KM cruising in case it runs flat, and I never leave it out more than 2 days.
thanks.


Top
 Profile  
 
PostPosted: Sat Feb 10, 2018 6:16 am 
Offline
Regular User
Regular User

Joined: Mon Nov 28, 2016 3:11 pm
Posts: 125
Location: FUZHOU, CHINA
Year: 2016
Color: WHITE
iceman wrote:
It is normally the battery, at least on '14 reg onwards vehicles. The ECU disables idle-stop should it detect the battery is not up to the job, as idle-stop used to flatten batteries on pre '14 models. It's a staggered graph and not just volts/amps in a linear fashion.
You can charge the battery off bike but good batteries do not normally go wrong, even if bikes are left outside in the cold for weeks on end. Poor or failing batteries are one of the most common issues on PCX / Forza 125's (someome recently posted this issue in their 1 yr old Forza 125, and it was the battery)
Never found a use for idle-stop on 4 years of commuting - for the very little fuel saving, not worth using it imho.


Sir, is there any chance the battery may run so flat that the system does not even start, which means leaving me amid mountains.


Top
 Profile  
 
PostPosted: Sat Feb 10, 2018 7:37 am 
Offline
Forum Benefactor
Forum Benefactor

Joined: Sun Dec 29, 2013 11:43 pm
Posts: 2276
Location: London, England
Year: 2015 125
Color: White
doletotodole wrote:
iceman wrote:
It is normally the battery, at least on '14 reg onwards vehicles. The ECU disables idle-stop should it detect the battery is not up to the job, as idle-stop used to flatten batteries on pre '14 models. It's a staggered graph and not just volts/amps in a linear fashion.
You can charge the battery off bike but good batteries do not normally go wrong, even if bikes are left outside in the cold for weeks on end. Poor or failing batteries are one of the most common issues on PCX / Forza 125's (someome recently posted this issue in their 1 yr old Forza 125, and it was the battery)
Never found a use for idle-stop on 4 years of commuting - for the very little fuel saving, not worth using it imho.

Sir, is there any chance the battery may run so flat that the system does not even start, which means leaving me amid mountains.

Possibly - again, someone posted in the FB PCX/Forza pages this exact problem too - they got tick over but no start - took it to the dealer, problem was the battery. The '14 models and disable of idle-stop was to put an end to draining the battery in this way, as that is what used to happen. Not saying the battery is a dud but likely - it may pay to purchase a cheaper compatible battery first rather than pay dealer charges (if out of warranty). Stop using idle-stop is a good thing - it rarely does any good even on newer bikes - saves a few pence a month in fuel if that.

_________________
Image


Top
 Profile  
 
PostPosted: Sat Feb 10, 2018 12:41 pm 
Offline
Official Moderator
Official Moderator
User avatar

Joined: Sun Jun 09, 2013 7:49 am
Posts: 2553
Location: Niagara Falls, USA (formerly in Bangkok, Thailand)
Color: White is faster
doletotodole wrote:
iceman wrote:
It is normally the battery, at least on '14 reg onwards vehicles. The ECU disables idle-stop should it detect the battery is not up to the job, as idle-stop used to flatten batteries on pre '14 models. It's a staggered graph and not just volts/amps in a linear fashion.
You can charge the battery off bike but good batteries do not normally go wrong, even if bikes are left outside in the cold for weeks on end. Poor or failing batteries are one of the most common issues on PCX / Forza 125's (someome recently posted this issue in their 1 yr old Forza 125, and it was the battery)
Never found a use for idle-stop on 4 years of commuting - for the very little fuel saving, not worth using it imho.

Sir, is there any chance the battery may run so flat that the system does not even start, which means leaving me amid mountains.


Yes, there is a chance the battery can run flat, as happened to mine, twice. But the key with mine was I very rarely took it on a ride anything longer than 2 or 3 kms. I did not use the idle stop because traffic was heavily congested, requiring frequent stops. Both times mine went flat, someone else was using it with the idle stop.

_________________
2010 Honda PCX 125 in Thailand (White) - "White Lightning" Sold in Sept 2017 :(
2009 Yamaha Majesty YP400 in USA (Metalic Titanium) - "The Throne"


Top
 Profile  
 
PostPosted: Sun Feb 11, 2018 10:50 am 
Offline
Forum Benefactor
Forum Benefactor
User avatar

Joined: Tue Nov 13, 2012 5:13 pm
Posts: 4168
Location: Marietta, Ga USA
Year: 2013
Color: red PCX
Keep two things in mind about bikes and batteries.

1. No one can tell you how long the battery sat on a shelf before it was installed on the bike. Batteries by their nature are always working internally. Therefore, it is possible for the battery to be part way through its life expectancy before it is even installed.

2. Everytime a vehicle is started it draws a lot out of the battery...so much so that it takes about 10 miles of riding to recharge it back to where it was before starting the bike. Short runs with lots of starts and stops will drain a battery quickly. If that is your normal riding schedule, put the battery on a Battery Tender each night.

Even knowing these two things will not prevent one battery from dying before another, with both being produced at the same time. I carry a small jump start battery with me when I ride any distance from civilization. I have seen them for as low as $30 USD.

_________________
Currently own:
Two Red 2013 Honda PCX150s

Givi tall windshield and tailbox on both
Lots and lots of extra lights
Custom seats from Thailand
Bad boy Airhorn on each
Takegawa Lowering Shocks on both


Top
 Profile  
 
PostPosted: Sun Feb 11, 2018 12:05 pm 
Offline
Frequent Poster
Frequent Poster
User avatar

Joined: Sat Dec 19, 2015 6:23 pm
Posts: 918
Location: Long Island , NY, Tampa, Ft laud
Year: 2013
Color: blk
The constant use of the start motor may also be overloading the battery and not getting recharged adequately if not on a constant run. Lots of stops/ starts and not too much riding ???


Top
 Profile  
 
PostPosted: Sun Feb 11, 2018 4:29 pm 
Offline
Forum Benefactor
Forum Benefactor

Joined: Sun Dec 29, 2013 11:43 pm
Posts: 2276
Location: London, England
Year: 2015 125
Color: White
If your run of the bike, and use of idle-stop seems to have affected the battery so much that your 2016 model disables idle-stop, it may not be a dud battery but the toll on the battery for your riding conditions is too great, hebce the ECU may have kicked in to allow the bike to work, albeit without idle-stop. Best stop using idle-stop, at least for a while and seems if idle-stop then works again - if so, either slightly dodgy battery or just do not use idle-stop.

_________________
Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Like what you see here? Buy the admin a beer! Donate at the link below:

Powered by phpBB® Forum Software © phpBB Group. Color scheme by ColorizeIt!