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Submitted: 1 year ago.Category: Car
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Customer reply replied 1 year ago
2012 jeep cherokee 3.7 alternator not charging
Answered in 10 minutes by:
8/4/2016
Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago
David Craig
David Craig, Auto Mechanic
Category: Car
Satisfied Customers: 4,489
Experience: Owner/Mechanic at 3D Automotive
Verified

Hi David here, dont know why you are posting 4 of the same questions.........

I need you to check the voltage at the large cable on the alternator while the vehicle is running. let me know the results and we can go from there. Thanks.

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Customer reply replied 1 year ago
10 volts while running at large cable . Lost connection sorry.
Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago

ok. there is only 2 possibilties here. you put a bad alternator in or the drive belt is slipping and not turning the pulley fast enough. try giving it rpms ans see if the voltage changes

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Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago

I'll be back on in the morning. hope you get your computer issue worked out. let me know the results...thanks.

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Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago

any updates?

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Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago

hello??????

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Auto Mechanic: David Craig, Auto Mechanic replied 1 year ago

do you still need assistance?

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Auto Mechanic: sprinkles08, ASE Certified Technician replied 1 year ago
sprinkles08
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 23,506
Experience: ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
Verified

Hello and welcome to JustAnswer!

If the alternator isn't charging it may be the alternator itself, a poor connection, an internal failure in the powertrain control module or a wiring issue between the PCM and alternator.

Has any testing of the control circuit been done?

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sprinkles08
sprinkles08
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 23,506
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