PUT NEW ALTERNATOR ON AND IT STILL WONT CHARGE

2003 Pontiac Montana

Tiny

Anonymous

December, 5, 2012 AT 9:45 PM

Put new alternator on and it still wont charge. Drains new battery.

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7 Answers

Tiny

saturntech9

December, 5, 2012 AT 9:55 PM

Did you have the old alternator tested as bad?Also do you have a multimeter to do some testing?

Tiny

continentals

December, 5, 2012 AT 10:03 PM

They said it was bad. Do not have multimeter

Tiny

saturntech9

December, 6, 2012 AT 1:42 AM

You need a multi meter so we can trouble shoot the problem.

Tiny

continentals

December, 8, 2012 AT 2:28 PM

Now have multimeter

Tiny

saturntech9

December, 9, 2012 AT 1:44 AM

Lets start with the engine idling what is the voltage reading at the battery?

Tiny

continentals

December, 9, 2012 AT 1:40 PM

11.90

Tiny

saturntech9

December, 9, 2012 AT 5:47 PM

Alright your not charging there is a red wire going to terminal B+ the one with a nut on there should be battery voltage there at the alternator. Also the orange wire to the D terminal at the alternator should have battery voltage. Let me know what you find?

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