Auto Parts: Charging problems, pep boys, repair vehicles

Question
I have a 1991 cherokee, and just installed a brand new alternator. It does not charge. I have 12 volts on the big wire on the alternator.Fuses are also good. I removed the alternator and took it in to an auto electric shop and it tested at around 14 volts.I did a code test and the codes are 12 & 41 I don't know what else to check. I use this vehicle just for plowing my driveway. Any input is much appreciated. Thanks.

Answer
Hi Tony,

You should have three wires. A 12volt BATT cable, a 12volt regulator feed wire and an interrupt lead that activates the ALT/BATT light when the system is not charging. Does the regulator feed wire also have 12volts?

Looking for a reputable service technician? My advice on finding a good technician is: Steer clear of the dealership and 'chain' stores like Firestone, Sears, Pep Boys, Monro Muffler/Brake, Midas, etc. as they usually only employ ONE ASE Certified Tech just so they can say they do and chances are, that guy is the asst. manager or manager and is not in the store to diagnose/repair vehicles anyway. Find a service location in the link below or get some names out of the yellow-pages and do a drive-by. Garages that employ ASE Certified Technicians will be marked with the 'Blue-Seal' insignia. If unsure about whether a place employs Certified Techs, just ask to see their credentials. ALL ASE Certified Technicians will be PROUD to show and display their certificate(s).

Thanks for the question, I hope this information was helpful to you.
Fred
Knucklebusters Used Auto & Truck Parts, Inc.
www.knucklebusters.us
570-453-0910
"Re-use is the best form of recycling" Help us recycle by purchasing used parts from us!
Looking for an ASE Certified shop near you? ASE Certified Technicians are the BEST of the BEST!
Click here: http://www.ase.com/bluesealsearch/locator.php