If you are only going to measure the DC voltage of the car then ANY multimeter will work. It doesn't matter. Just buy the cheapest available.I am going to test the alternator today and about to head out to Sears, but checking their website i dont know which one to purchase, can someone please help me or post a link to a multimeter that should be used on my car.
i think you got me confused with someone else lol, i dont have AAA...and i think my VR is shot but just gonna double checkby the test that AAA ran in your other thread, the alternator seemed ok. as for a multimeter, don't overspend on something you aren't gonna use alot of. if you are going to try and measure battery draw, you will have to get one that has amp readings.
13.80-13.86V while running sounds about right. Your voltage regulator should be fine. On my car I measured between 13.65 and 13.75V with revs over 2K with headlights, heater and rear defroster on. I got this reading at the cig lighter. Measuring on the battery or on the under hood battery point will give a slightly highier or lower reading so don't worry about a 100-200 millivolt difference.okay i tested it and these are the readings i get : 12.30 with car off, 13.8 to 13.86 with car on and headlights (xenons) and heater (91 degrees full blast) on, do i need to change my alternator some one please help!!