WadeTustian Posted November 12, 2014 Report Share Posted November 12, 2014 hey guys. i just got done installing my mike singer 250 amp alt and xs power d3400 in my mazda 3 today. voltage is great except for at idle voltage will be 14.2 or so while driving as soon as i stop its like the alt shuts off and my voltage drops to 12.7 roughly.. fans slow down which is annoying becuase winter is coming, but all my lights dim also. the second i rev a bit voltage drops right back up until idle speed again. lights jump back up and i can physically hear the fan speed up on my heater!! any help would be greatly appreciated.. car is a 2007 mazda 3 sedan. 2.3L ill work on uploading some videos 2007 Mazda 3 Sedan Pioneer 80-prsB2 Zero.7 2 15s 4inch coil psi recones temp til my subs are reconedFocal P165-v15Audison voce quattro fully activeOnly gonna get louder 146.1 at 38hz 138.x at 24hzBuild log http://www.stevemeadedesigns.com/board/topic/191444-mazda-3-sedan-sql-build-audisonfocalb2aa/ Link to comment Share on other sites More sharing options...
Masterbasser Posted November 12, 2014 Report Share Posted November 12, 2014 alternator turn on is prolly to high for ur application, what is the engine rpm of ur idle? do you know crank pulley size? Kenwood excelon ddx795 3 370 amp CES alternators (audio side only) McLaren dome tweeters Crescendo 6.5 ultra neos NVX JAD800.4 4 PA x4 SPL 18's 4 Digital Designs m5's at .7 ohms each 2 K2 80 ah lithiums 3 group 31 agms Ledglow million color (12 piece) 2007 Yukon xl Link to comment Share on other sites More sharing options...
WadeTustian Posted November 12, 2014 Author Report Share Posted November 12, 2014 alternator turn on is prolly to high for ur application, what is the engine rpm of ur idle? do you know crank pulley size? idle is about 700 rpms. and no i dont know the crank pulley size 2007 Mazda 3 Sedan Pioneer 80-prsB2 Zero.7 2 15s 4inch coil psi recones temp til my subs are reconedFocal P165-v15Audison voce quattro fully activeOnly gonna get louder 146.1 at 38hz 138.x at 24hzBuild log http://www.stevemeadedesigns.com/board/topic/191444-mazda-3-sedan-sql-build-audisonfocalb2aa/ Link to comment Share on other sites More sharing options...
hdorre Posted November 12, 2014 Report Share Posted November 12, 2014 its bc your alt spins too slow. One solution is getting a SLIGHTLY smaller pulley.. which is also called an overdrive pulley. Im sure the pulley you have is smaller than factory, but.. Id hit up Mike asap. This even smaller pulley will increase the alternator's rotor assembly rpm. In return, your alt will turn on and charge at idle. Now, keep in mind that there will be less belt contact (smaller area) with the alt's pulley... But priorities.. Anyway, shoot Mike a message. He wont leave you hanging. Maybe see whats good with efFlako. Iirc he has a Singer in a Mazda 3. On 5/8/2011 at 7:38 PM, Kranny said: On 5/8/2011 at 7:35 PM, 'Maxim' said: It hurts me inside when I read stuff like this and remember you're 15 LMFAO so true Mitsubishi 3000GT (Old Build) Headunit: Pioneer 80PRS Frontstage: (2) McLaren Audio MLT-2 Tweeters & (4) PRV Audio MR Series Neo 6.5" Mids Substage: 4 15" Hybrid Subs - Tantric Motors & Sundown Softies Amps: Banda 2.4D Amp (Tweets), American Bass VFL 350.4 (Mids), and (2) Ampere 3800s Electrical :Singer 260A Alt & JY Power Lithium 2005 Chevy Colorado Ext Cab Headunit: Pioneer 80PRS Frontstage: 4 PRV 700Ti Tweets & 6 10" Delta Mids on 3000wrms Substage: 6 Fi BTL 18s in a 4th Order Walkthrough on 3 Wolfram 4500s Electrical: Singer "390" and JY Power My Official Feedback Thread Link to comment Share on other sites More sharing options...
SnowDrifter Posted November 12, 2014 Report Share Posted November 12, 2014 Idle speed is below the turn on speed for the alt. Options are: Ignore it New/different alt Raise idle, which will reduce fuel economy Smaller alt pulley, which has the potential of inducing/intensifying belt slip Larger crank pulley: No belt slip problem, but other components on the belt will wear slightly faster. Also tend to be pricey. FWIW that's the route I took for my own vehicle ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Masterbasser Posted November 12, 2014 Report Share Posted November 12, 2014 talk to company owner and get it figured out you paid for an alt that charges at idle so thats what ya should be getting for your money., if u have an aftermarket underdrive crank pulley on ur car then its prolly an issue of yours Kenwood excelon ddx795 3 370 amp CES alternators (audio side only) McLaren dome tweeters Crescendo 6.5 ultra neos NVX JAD800.4 4 PA x4 SPL 18's 4 Digital Designs m5's at .7 ohms each 2 K2 80 ah lithiums 3 group 31 agms Ledglow million color (12 piece) 2007 Yukon xl Link to comment Share on other sites More sharing options...
WadeTustian Posted November 13, 2014 Author Report Share Posted November 13, 2014 Apparently the automatics idle higher the manual. And the guy I bought it off of has a automatic 2007 Mazda 3 Sedan Pioneer 80-prsB2 Zero.7 2 15s 4inch coil psi recones temp til my subs are reconedFocal P165-v15Audison voce quattro fully activeOnly gonna get louder 146.1 at 38hz 138.x at 24hzBuild log http://www.stevemeadedesigns.com/board/topic/191444-mazda-3-sedan-sql-build-audisonfocalb2aa/ Link to comment Share on other sites More sharing options...
Kyblack76 Posted November 13, 2014 Report Share Posted November 13, 2014 Apparently the automatics idle higher the manual. And the guy I bought it off of has a automatic THen rev higher when your sitting there... or, see if mike can "help you" with better low idle performace. THis isnt a 6phase eh? SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
tdsa23 Posted November 13, 2014 Report Share Posted November 13, 2014 I had a alt that would turn off at idle I would just rev it or put the car in neutral XS Power D5100, 2 D2700s, & 2 D975s MechMan 220a Alt DC 5K Kicker 650.4 2 12 Ascendant Audio Mayhem's Pioneer DEH-P7200HD Rockford Fosgate 3sity.1 Build log: https://www.stevemeadedesigns.com/board/topic/166792-88-nissan-maxima-trunk-build/#entry2430899 https://www.stevemeadedesigns.com/board/topic/191439-lexus-is300-fi-crescendo-shca-rf-pics/ Link to comment Share on other sites More sharing options...
WadeTustian Posted November 13, 2014 Author Report Share Posted November 13, 2014 I don't wanna sit there and rev every light especially because my commute is all city driving 2007 Mazda 3 Sedan Pioneer 80-prsB2 Zero.7 2 15s 4inch coil psi recones temp til my subs are reconedFocal P165-v15Audison voce quattro fully activeOnly gonna get louder 146.1 at 38hz 138.x at 24hzBuild log http://www.stevemeadedesigns.com/board/topic/191444-mazda-3-sedan-sql-build-audisonfocalb2aa/ Link to comment Share on other sites More sharing options...
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