 subaru alt. not charging on start up., subaru alt. |
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| jeepguy06 |
 Feb 15 2023, 04:47 PM
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#1
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Newbie  Group: Members Posts: 45 Joined: 11-January 21 From: portland or Member No.: 25,060 Region Association: Pacific Northwest  |
hey all,
so when i start my car i notice that the alt wont put out 13v for a bit after start up.at times i have drove for over 10 mins and it has dropped down to 8 volts before it starts putting out 13v. also feel that the battery is draining down if the car sits longer then a day. so i have to keep it on the charger. when i hooked up all the wires i ran one from battery post to one of the 2 wire terminals and second one it ran up to the charging light. the light has been changed over to a led bulb and also stays on all the time when the car is running. any help would be great. Thanks |
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Replies(1 - 3)
| davep |
Feb 15 2023, 09:39 PM
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#2
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914 Historian Group: Benefactors Posts: 5,227 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
This is one bulb where an LED absolutely cannot be used. Just put the old bulb back in.
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| mjrrti |
Feb 16 2023, 01:49 AM
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#3
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High Desert Member Group: Members Posts: 49 Joined: 4-February 14 From: Apple Valley, Ca Member No.: 16,959 Region Association: Southern California |
QUOTE(jeepguy06 @ Feb 15 2023, 02:47 PM)  hey all, so when i start my car i notice that the alt wont put out 13v for a bit after start up.at times i have drove for over 10 mins and it has dropped down to 8 volts before it starts putting out 13v. also feel that the battery is draining down if the car sits longer then a day. so i have to keep it on the charger. when i hooked up all the wires i ran one from battery post to one of the 2 wire terminals and second one it ran up to the charging light. the light has been changed over to a led bulb and also stays on all the time when the car is running. any help would be great. Thanks The bulb is what excites the alternator to charge. You need the draw from the stock bulb to do that. The LED does not draw enough. A burned out bulb will give you the same result. |
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| jeepguy06 |
Feb 16 2023, 08:55 AM
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#4
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Newbie Group: Members Posts: 45 Joined: 11-January 21 From: portland or Member No.: 25,060 Region Association: Pacific Northwest |
ok this makes since that it would want an original bulb set up.
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