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04-09-2010, 09:36 PM | #19 |
Drives: 2008 Blazing blue Met. HB Join Date: Oct 2008
Location: Calgary
Posts: 38
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Stupid question but is your ground to your batter tight? Because I had fluctuations in my voltage while driving around to where even the steering was tougher at times (of course cause it's electric). So I checked my ground and it wasn't loose loose but wasn't tight either.
Just a stupid question cause yeah. . .I've been there. . . |
04-10-2010, 12:34 PM | #20 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I checked and tightened both battery cables this morning. At first it seemed to help- 14.1v at idle and at speed, regardless of load.
This continued for a while, but after a 40 minute parkway drive (where the voltage stayed at 14.1), the voltage dipped as soon as I moved from the parkway to slower-speed city streets. It never went lower than 13.6 though, so I guess that's an improvement. No more 13.2s, though I'm still frustrated at the inconsistency. |
04-10-2010, 02:09 PM | #21 | |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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Quote:
MGargano's inconsistent voltage is an interesting thing; I'm not technical enough to know, but how could a pulley cause that?
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04-10-2010, 02:11 PM | #22 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I've pretty much ruled out the pulley as the issue, since it's the same size as OEM.
I'm still curious what's causing the inconsistency, though. Battery, cables, and pulley are out as causes, from what I can tell. |
04-10-2010, 03:25 PM | #23 |
Banned
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yea i just tightened my belt couple minutes ago, my water pump pulley was getting a slight groove from the belt on it and it was squeaking, so i just took a breaker bar and my landlord helped me (he works on cars) so everything works fine now. I have a full NST lightweight pulley set with the 10% underdrive and never had a problem so far and I drove about 40,000 miles with them on now a little over a year, and i've been through hot weather to the deadly winter storms we just had in ny here and no problems :)
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04-10-2010, 03:38 PM | #24 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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MGargano, have you checked that inconsistent voltage in more than one location? seems like that might help locate the root cause.
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Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
04-10-2010, 03:40 PM | #25 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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04-10-2010, 06:56 PM | #26 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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Right at the battery with a volt meter.
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04-10-2010, 08:14 PM | #27 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I was doing that at first until I remembered the Scan Gauge had a voltage gauge. I can only check at the battery when I'm sitting in the driveway at idle, which is not where I'm having the problem- it fluctuates most when I'm at speed.
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04-10-2010, 09:42 PM | #28 |
Drives: Scion FRS RS2, ‘21 Crosstrek Join Date: Oct 2008
Location: Chatham, Ontario, Canada
Posts: 1,729
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Alternator (expensive) or voltage regulator (less expensive/cheap). Not sure in the case of Yaris but sometimes the voltage regulator is integrated into the alternator. The battery could also be nearing its end.
If you problem resurfaces you might have a shop do a load test to pinpoint the culprit.
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TRD Upgrades: 18" Wheels wrapped in 215/35/18 PZero's, Sportivo Shocks/Struts, Lowering Springs, Swaybar, Axle-Back Exhaust, Oil Cap, Rad Cap, Signage. Aftermarket Goodies: Piggies SS, K&N Drop-In, Blitz S/C, DC Header, NST Pulley) Toyota Options/Accessories: Sport Pedal Covers, Sport Shift Knob, Ipod Interface, Summer Mats, Winter Mats, Cruise Control, Auto-Dim Mirror, Echo steelies with winter boots. |
04-10-2010, 09:48 PM | #29 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I actually bought a new battery and the issue remained, so I ruled that out as the cause and returned the new battery.
The Yaris' voltage regulator is integrated into the alternator, so I don't know how cheap it'd be to replace. I was hoping to figure this out on my own, but it looks like my only option is a local auto electric repair place since I've checked out everything I can think of. |
04-10-2010, 09:50 PM | #30 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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04-10-2010, 09:54 PM | #31 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I have two amplifiers and HIDs connected to the battery along with NST pulleys, so I can't imagine that they'd cover anything alternator/electrically-related under warranty.
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04-10-2010, 10:16 PM | #32 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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So do I, and I've never had any questions asked about it. As long as they aren't MASSIVE 1000+ Watt amps each.
If you have the tunes pumping as you drive with the fan going, the lights on, it's totally normal for the voltage to fluctuate. That why you normally need a big capacitor hooked in parallel with the amp wiring. It reduces voltage fluctuation. |
04-11-2010, 10:48 AM | #33 | ||
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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Quote:
Quote:
I would definitely look into this if the fluctuation was only happening with the amps on. It's frustrating that it's happening all the time. |
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04-11-2010, 04:11 PM | #34 | |
Banned
Drives: Yaris 3dr Hatchback Join Date: Mar 2010
Location: SE Texas
Posts: 152
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Quote:
Says on their site you may have to change the belt. Did you get this fixed? |
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04-11-2010, 08:49 PM | #35 |
Don't drive it, RALLY it!
Drives: 1999 echo PRC rally car Join Date: Oct 2008
Location: Joyner, Brisbane
Posts: 321
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If the Scangauge is still showing over 13 volts, how can the alternator be "under-charging" the battery?
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04-11-2010, 11:28 PM | #36 |
Drives: 2009 Yaris Hatchback Join Date: Feb 2009
Location: NJ
Posts: 792
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I ordered an alternator with 22,000 miles for $60 from the same junkyard I got the "S" gauge cluster (yard4.com), so hopefully I'll have my answer in a few days.
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