I noticed that my voltmeter would go from about 13.5 to around 11 and then back up and later on back down.
I have a new battery, so thats not the problem.
when I take off the battery terminal, the car still runs, so I'm thinking it's the voltage regulator.
I see nothing in the book about the regulator, not even any regulators at the auto part sites.
Are the alternators built with a regulator that can't be changed.
2006-06-22 14:37:53 · 8 answers · asked by You may be right 7 in Cars & Transportation ➔ Maintenance & Repairs
general motors voltage regulators are built into the alternator - the prongs directly under the plug are part of the vr - with the motor running you should have a fairly constant reading around 13.5 all the time.
2006-06-22 14:46:02 · answer #1 · answered by Norman 7 · 3⤊ 0⤋
Lets start with this. If you have some kind of aftermarket alarm or maybe a sound sytem that was wired incorrectly this could cause a drain in the charging sytem, which could explain the fluctuation in the gauge reading. And yes. That year model vehicle has a voltage regulator built into the alternator. This item IS replaceable and you can get one at a local auto parts store. AC Delco part # D685
2006-06-22 14:46:39 · answer #2 · answered by mr_n_mr 2 · 0⤊ 0⤋
Your alternator regulates its self, You battery is used only for starting your motor and any memory that the computer or radio needs, this is why your car will run with out a battery once started. As for the voltage swing, its normal, watch it when you turn your AC on.
BDS
2006-06-22 14:45:56 · answer #3 · answered by billydonscott1973 2 · 0⤊ 0⤋
No contest, the Mustang. With some tweaks, you could a minimum of replace in a 4.2L v6 from a later F150 truly truly and function over 200 horsepower good there. you ought to do a later 3.8L with 190ish horsepower, even yet it truly is basically the comparable artwork as a 4.2L. i do no longer see any effortless swaps from an previous 3.4l v6 in those F-bodies and the information is not extra clever in case you have between the uncommon 3.8L-geared up 'ninety 5 form F-bodies...those are Cali-in user-friendly terms 3.8L vehicles, besides.
2016-10-31 08:03:57 · answer #4 · answered by ? 4 · 0⤊ 0⤋
All your GM Delco alternators have a built -in regulator since I'd say 1971. There seems to be no problem with your setup from your description.
2006-06-22 15:35:23 · answer #5 · answered by butch 5 · 0⤊ 0⤋
the regulator is built into the alternatorit is possible to have a bad bat even though it is new take the car to autozone and have the alt tested they will let you knowif its the alt or batt
2006-06-22 14:46:42 · answer #6 · answered by me too 6 · 0⤊ 0⤋
if the volt meter is at 13.5 the alt. is working when it goes back to 11 volts the battery is charged up..... on a g.m car the reg. is built into the alt.......
2006-06-22 14:45:19 · answer #7 · answered by Anonymous · 0⤊ 0⤋
You have an alt. with an integral regulator. It can be rebuilt but would wind up costing almost as much as a new one.
2006-06-22 14:59:47 · answer #8 · answered by gun grunt 2 · 0⤊ 0⤋