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Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 23591
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Chevrolet: 2005 chevy malibu 2.2L eng has new battery starter

Customer Question

2005 chevy malibu 2.2L eng has new battery starter alternator runs gud while driving but alternator not charging battery n battery light stays on till cars stalls
Submitted: 1 year ago.
Category: Chevy
Expert:  Dan replied 1 year ago.
Hello, my name is ***** ***** I'm here to help get your problem solved. Check to see if large wire going to alternator has battery voltage with engine off. Let me know, thanks.
Customer: replied 1 year ago.
Wasnt sure how to find that out but i can tell u its fires right up all lights on dash do like they supposed to but once all dash lights go out battery light comes on wit like three or four bell chimes like a signal for sumn
Expert:  Dan replied 1 year ago.
You will need to use a multimeter or test light to check voltage. At this point it sounds like problem is wiring or PCM but testing needs to be done to know which one. Let me know how it goes or if you have more questions, thanks.
Customer: replied 1 year ago.
Ok so im lookn for it to hav voltage or not to hav voltage
Expert:  Dan replied 1 year ago.
It should have voltage on large wire with engine off.
Customer: replied 1 year ago.
Ok checkn wit a test light it does wit eng off
Expert:  Dan replied 1 year ago.
Ok, next step is to check wiring between alternator and PCM. You will need to use a multimeter. Unplug alternator and unplug PCM. Then one lead of meter on wire at alternator and other lead on wire at PCM, this will give you resistance reading on wire between two points. Both of the wires should have under 5 ohms resistance, if good the PCM needs to be replaced as it controls the alternator. Here is a wire diagram to help with testing, let me know if you have more questions. Thanks.
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https://www.dropbox.com/s/xjtm5nlx02j77pu/chargings.pdf?dl=0
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