Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 10-10-2017, 09:43 AM   #1
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
Upgrade Alternator?

Good morning all....

I have a question on the alternator. Is there an upgraded alternator we can put on the Yaris? I was looking at them on Rock Auto, and it appearsthat an alternator from a 2008 Scion XD with a 1.8 liter would fit, but uses a different pulley (more ribs). They are both clocked at 8:30, and the mounts appear to be close, if not exactly the same. The Scion alty puts out 100 amps.

Just wondering if anyone had tried this, or something similar? I've got a Ford 3G alternator laying around, might see if it's a possibility, as they are 130 amp.

Anyway, I have a bearing going out in mine I believe, so I'd like to upgrade.

Scion Alternator


Yaris Alternator
white89gt is offline   Reply With Quote
Old 10-11-2017, 11:58 AM   #2
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
FWIW, just bought one for a 2011 Scion, which is 100 amps. It has a decoupler pulley on it, and I will attempt to use it... as I think it will help with the squeaky belt.

Will report back when I get it, and install it.
white89gt is offline   Reply With Quote
Old 10-11-2017, 01:56 PM   #3
zerosl
 
Drives: 2008 Yaris S Hatchback
Join Date: Oct 2017
Location: NY
Posts: 29
My dad owns a starter/alternator shop in Newburgh NY, he would know the exact information you are looking for, not sure if he ships out units, but its worth giving him a call
Lucho: 845-564-0320
zerosl is offline   Reply With Quote
Old 10-12-2017, 02:00 PM   #4
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
Thank you!!!
white89gt is offline   Reply With Quote
Old 10-12-2017, 08:07 PM   #5
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 949
yeah. the pulley swap should be easy. there use to be motor shops in most cities. if you find one they can build whatever you want... or call that guy in NY. shipping shouldn't be more than $30
oh, you're in Utah? i know there is a few in GJ. you could drive there!
Junction Starter&Alternator 970.243.1136
SirDigby is offline   Reply With Quote
Old 10-12-2017, 08:15 PM   #6
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 949
there is quite a few in SLC. these all look like great places!
http://www.actionalternator.com/
http://generatorexchange.net/
http://snap-usa.com/
SirDigby is offline   Reply With Quote
Old 10-15-2017, 10:44 AM   #7
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
Thank you SirDigby! The place I used to frequent doesn't answer the phone anymore.... these will come in handy.

I just looked up the status and the last activity was on October 13th at 3am.... saying it is in Virginia. Starting to wonder if something happened.
white89gt is offline   Reply With Quote
Old 10-20-2017, 09:22 PM   #8
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
Got it in today! Works like a champ. Had to get a new (longer) bottom bolt, and use some washers for spacers, but the little Yaris has a 100 amp alternator in it now.

Here's some pics.... don't know if it's worth doing a write-up/how-to or not....
Attached Images
File Type: jpg alternator 1.jpg (207.2 KB, 156 views)
File Type: jpg alternator 2.jpg (173.7 KB, 156 views)

Last edited by white89gt; 10-20-2017 at 09:44 PM.
white89gt is offline   Reply With Quote
Old 10-20-2017, 09:36 PM   #9
06YarisRS
 
Drives: 2006 Yaris RS
Join Date: Aug 2017
Location: Beaver Harbour, New Brunswick, Canada
Posts: 1,037
Quote:
Originally Posted by white89gt View Post
Got it in today! Works like a champ. Had to get a new (longer) bottom bolt, and use some washers for spacers, but the little Yaris has a 100 amp alternator in it now.

Here's some pics.... don't know if it's worth doing a write-up/how-to or not....
Nice upgrade! I don't see the pics. I think members would appreciate a write up with pics. I know I would. Thanks.
__________________

2006 Yaris 5 Door RS 2ZR-FE Swapped
2008 Yaris LE
2011 Kia Sedona LX
06YarisRS is online now   Reply With Quote
Old 10-20-2017, 09:45 PM   #10
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
Sorry... They were gigantic so I resized them, lol.

Thanks!
white89gt is offline   Reply With Quote
Old 10-23-2017, 12:03 PM   #11
xdarkxfirex
 
Drives: 2015 yaris le
Join Date: Feb 2015
Location: hamilton, on
Posts: 128
I dont think there is really a need to upgrade on these cars. Not too many electronics to drain it, and mine usually charged at a steady 14.2-14.3v
xdarkxfirex is offline   Reply With Quote
Old 10-23-2017, 01:22 PM   #12
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
There is if you put a stereo in it. Surely I'm not the only one that likes to feel their music.
white89gt is offline   Reply With Quote
Old 10-23-2017, 05:26 PM   #13
xdarkxfirex
 
Drives: 2015 yaris le
Join Date: Feb 2015
Location: hamilton, on
Posts: 128
Maybe, but I have never had a problem with this car draining. Most aftermarket batteries also are sold with larger cca than the factory battery.
xdarkxfirex is offline   Reply With Quote
Old 10-24-2017, 12:13 PM   #14
white89gt
 
Drives: 2007 Yaris
Join Date: Aug 2017
Location: UT
Posts: 40
I think you are confused on what CCA's are. CCA means Cold Cranking Amps. This only matters when you start the vehicle. Your vehicle is intended to only use the battery to start it, not run it. After it starts, it is the alternators job to take over and run all things electronic.

When you run electrical components, in this case the alternator, at a lower duty cycle - they last longer. My car was pulling from the battery... a sign the alternator is struggling. If you just charge your phone and drive, the stock alternator is fine, I agree. But like I say, I've got a stereo installed, and my amplifier alone draws 30 amps. It was dimming my lights, so I came up with a way to replenish the current draw.

If you don't have a need for it, I'm sorry to have wasted your time. I thought some other users may find themselves in the same boat I am with a stereo.
white89gt is offline   Reply With Quote
Old 03-10-2018, 04:29 PM   #15
JimKellyfan
 
JimKellyfan's Avatar
 
Drives: 2010 Yaris Sedan
Join Date: Oct 2013
Location: the good Carolina
Posts: 167
good idea, thanks / yeah when I hit my window up and it bottoms out, the lights dim, so yeah stock alternator is not enough juice / I know of a great rebuild place in Rock Hill, SC and would feel this would be best option, to trade up, they can getcha one with needed pulley and amp requests I am sure.
__________________
2010 Yaris sedan, TRD CAT back (sport muffler only, really), OBX header (relocated front AF sensor to front pipe), OBX throttle plate spacer, K&N filter (in stock air box-for now), TRD struts and shocks, Mexico Rough Road Springs x 4, new Yota sway bar links front, slotted/drilled rotors and Maxx brakes front, Valvoline synthetic brake fluid, 3M undercoated, 16" Konig Feathers Uniroyal Tiger Paw GTZ Tires
TRD rear sway bar, 4 GT Spec bars including: front strut brace 2 point, 4 point ladder brace, mid chassis brace and rear lower tie brace, rear hitch, Firestik/Cobra CB setup
JimKellyfan is offline   Reply With Quote
Old 03-11-2018, 08:28 AM   #16
06YarisRS
 
Drives: 2006 Yaris RS
Join Date: Aug 2017
Location: Beaver Harbour, New Brunswick, Canada
Posts: 1,037
white89GT, your thread got me thinking about my own upcoming stereo install. Although my system shouldn't draw more that 25 - 30 amps - at the level/power demands I'll be making - that is still 25 - 30 extra amps demanded by the alternator. I did some searching for upgraded alternators and come up with the following. As soon as I install my stereo, I will get out an amp clamp and depending on the total draw, I may be looking at an upgrade.

https://www.ebay.com/itm/HIGH-AMP-To...19.m1438.l2649

Thanks for the post. It's definitely helpful.
__________________

2006 Yaris 5 Door RS 2ZR-FE Swapped
2008 Yaris LE
2011 Kia Sedona LX
06YarisRS is online now   Reply With Quote
Old 04-20-2018, 07:10 AM   #17
07liftback
 
07liftback's Avatar
 
Drives: 07 Yaris Liftback
Join Date: Nov 2010
Location: Bay Area
Posts: 146
I notice the Yaris stumbling a bit when I turn on the heater (not the AC) which suggests the alternator is quite weak in the Yaris. Never had this issue on the 15 year old Civic I owned back then.
I had a friend who replaced his failing alternator with a rebuilt Denso one and it failed in a year. Was told by an ex mechanic that they usually get their alternators rebuilt at alternator shops who could also upgrade the components. He ended up getting it swapped out at an alternator shop so his old one made up for the core charge.

OP, was your alternator from a 2011 Scion XD? Might be a useful write-up for those of us who want to upgrade if the alternator is failing.
07liftback is offline   Reply With Quote
Old 04-25-2018, 03:54 PM   #18
B.B._07
 
Drives: 07 5dr
Join Date: Nov 2015
Location: YYC
Posts: 161
Quote:
Originally Posted by 07liftback View Post
I notice the Yaris stumbling a bit when I turn on the heater (not the AC) which suggests the alternator is quite weak in the Yaris. Never had this issue on the 15 year old Civic I owned back then.

Before you go looking to swap an alternator it's best to confirm the alternator is the issue. Get an multi-meter and check if you have ~14V at the battery terminals with the car at idle.
B.B._07 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Question about alternator shepd DIY / Maintenance / Service 1 05-04-2017 12:55 PM
Electrical System Upgrade Advice sqcomp In Car Entertainment + Electronics (audio / video / alarm) 6 03-23-2016 01:15 AM
Ohm's Law and Setting Amp Gain _S7V7N_ In Car Entertainment + Electronics (audio / video / alarm) 24 03-13-2012 09:34 PM
07 yaris bad alternator Yaris_guy DIY / Maintenance / Service 24 06-29-2011 11:47 AM
Need Help! Alternator Upgrade? Secondary Battery? covert313 In Car Entertainment + Electronics (audio / video / alarm) 12 09-24-2010 07:28 PM


All times are GMT -4. The time now is 07:34 AM.




YarisWorld
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.