fox_racin4 Posted July 1, 2012 Report Share Posted July 1, 2012 So.. I need to check to see if ALL my alts work.. If i unhook pos leads to alt, should i have 14+v at the alt even with wires off it? 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
b-dubs89 Posted July 1, 2012 Report Share Posted July 1, 2012 So.. I need to check to see if ALL my alts work.. If i unhook pos leads to alt, should i have 14+v at the alt even with wires off it? get your car running , disconnect the battery , if the car stalls when you disconnect the batt the alt is not charging . an alternator cannot start producing a charge with out a charge to excite the windings and get the alternator started . if you are uncomfortable with disconnecting the batt while the car is running , you could take your alt to an auto parts store to have it tested . Link to comment Share on other sites More sharing options...
Jessica Posted July 1, 2012 Report Share Posted July 1, 2012 So.. I need to check to see if ALL my alts work.. If i unhook pos leads to alt, should i have 14+v at the alt even with wires off it? get your car running , disconnect the battery , if the car stalls when you disconnect the batt the alt is not charging . an alternator cannot start producing a charge with out a charge to excite the windings and get the alternator started . if you are uncomfortable with disconnecting the batt while the car is running , you could take your alt to an auto parts store to have it tested . He has multiple alts. I think disconnecting each alt one at a time at the batt and checking for voltage will work. You might be able to just throw a clamp meter on each positive while it's connected also, but i'm not sure about that one. edit. what i am saying is, yes. Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
fox_racin4 Posted July 1, 2012 Author Report Share Posted July 1, 2012 So.. I need to check to see if ALL my alts work.. If i unhook pos leads to alt, should i have 14+v at the alt even with wires off it? get your car running , disconnect the battery , if the car stalls when you disconnect the batt the alt is not charging . an alternator cannot start producing a charge with out a charge to excite the windings and get the alternator started . if you are uncomfortable with disconnecting the batt while the car is running , you could take your alt to an auto parts store to have it tested . Thanks for the..help but for one... I have 3 alts.. And 10 batts i think i know what im doing in that department.. What im asking is if my alts "on" do i need a pos lead off it to a battery for it to work 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
fox_racin4 Posted July 1, 2012 Author Report Share Posted July 1, 2012 Also, what parts store can test a 400a alt... Properly 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
b-dubs89 Posted July 1, 2012 Report Share Posted July 1, 2012 you shouldn't need to be coupled to a batt once the alt is running i am not too sure as how extensively a parts store can test a high output alt Link to comment Share on other sites More sharing options...
b-dubs89 Posted July 1, 2012 Report Share Posted July 1, 2012 called my local o'riellys and it sounds like a no-go for testing . asked them about testing a 400 amp alt the guy was like well first we would need a part number to enter into the test machine to set up the test . so i stand corrected . Link to comment Share on other sites More sharing options...
Ninja_v1.0 Posted July 2, 2012 Report Share Posted July 2, 2012 Canada, http://www.stevemeadedesigns.com/board/topic/23792-why-your-local-autoparts-store-cant-test-your-alt-properly/ your local autoparts store cannot test your alt properly. let me know if you need anything mang... When your at the top everyone is coming for you, friends, family, haters and even those who don't know you.. my advice.. KILL EM ALL Link to comment Share on other sites More sharing options...
fox_racin4 Posted July 2, 2012 Author Report Share Posted July 2, 2012 i know they cant.. lol apparently ive been on 1 maybe 2 of 3 alts for a while now... 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole Link to comment Share on other sites More sharing options...
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