[Jia417]

Growing up, every electrical issue seemed to come down to the same 2 usual suspects.. Battery or Alternator.. (or the misc. cables connecting them). So when my wife's Armada battery died, jumped..died, so trickle charged, next day, died while driving, its the alternator, right? Had both tested and they passed!? I cleaned up grounds, replaced the fusible link on the positive cable, checked all fuses and tried again.. this time with a multi meter attached. Battery started at 12.7, and as soon as i start it the numbers slowly but steadily start declining. Revving the engine does nothing. Did the self test trick, just cause it was news to me, first id heard of it.. everything did its thing. 3 codes, P0102 and forget the others at the moment. Oh I forgot to mention 2 things, 10 days or so prior I installed an after market stereo and back up camera, and 2 days before it started the almost no power/dying while running stuff the entire cluster stopped working. My fist time posting, but I have enjoyed and appreciated the work y'all put in here, so thanks for that and thanks in advance for your attention.

 

[CanyonQX80]

Pull the fuse for your stero and eliminate it as an issue.

Tested the alternator how?

 

[Jia417]

Pull the fuse for your stero and eliminate it as an issue.

Tested the alternator how?

Pulled fuse to no avail, and I took the alternator and the battery to O'reillys to have them tested.

 

[marctronixx]

that code you list is the mass air flow. have you had that cleaned or better yet replaced since your car is a 2006? the other codes are also helpful if you remember them.

did you do the old "disconnect the battery whilst the car is running " test to see if the alternator is truly good? you mentioned volts going down as the car is started sounds like the alternator is not doing its job.

have you replaced the IPDM?

whats the "self test" trick?

 

[desrtdude]

Sounds like the alternator is on its way out. I agree if the voltage is dropping then your alternator is not providing enough charge.

 

[Jia417]

that code you list is the mass air flow. have you had that cleaned or better yet replaced since your car is a 2006? the other codes are also helpful if you remember them.

did you do the old "disconnect the battery whilst the car is running " test to see if the alternator is truly good? you mentioned volts going down as the car is started sounds like the alternator is not doing its job.

have you replaced the IPDM?

whats the "self test" trick?

The self test is where you put the key in the on position, push the black button that lets it know when the drivers door is shut 10 times, turn it off, then back to the on position and it will run thru the different things the idpm controls to see if they are operational.