Question about 2003 Saturn VUE

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No power from the alternator to the battery. Battery & alternator are good. Aternator bench tested good, & battery only 1 week old.

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Hi, check for a bad relay or a bare wire grounding out.......

Posted on Apr 09, 2011

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07 Milan overcharging battery. Replaced alternator. Still overcharging battery. Original alternator bench tested good. What would cause this.


i would say pcm.these. are notorious for getting spiked from ignition sys.have ya had any perfomance problems in the past?

Oct 21, 2014 | 2007 Mercury Milan V6 AWD Sedan

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My alternator is not charging my battery, and both the aternator and battery are brand new and tested positive on the bench tests... Any ideas?


The early GM products would build up restance in the wire that went from the alternator to the starter. The easy cure for this is to install a 10 guage wire directly from the Alternator Batt. lug directly to the battery postive post. Do this using the correct end connectors.. do not just wrap the wire around the termanel. This was a big problem on these cars. especially the Diesel cars. Always disconnect the battery ground terminal before you work on this.

May 10, 2014 | 1990 Buick LeSabre

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My alternator is not charging the battery! I know the alternator is good as i removed it and had it bench tested (also just bought it a few weeks ago, and a new battery). Any ideas on why it is not...


If the alternator and battery are good, then clearly you have a wiring/connection issue of some sort.
I'd start by checking ALL the fuses (just for surety - ask me how I know), and then if that checks out, then check the wires that connect to the alternator to see if the proper voltage signals are there. Also, be sure that the battery cable connections are good at both ends (battery terminal ends, and the ends that connect to the car), all need to be clean and tight. If there is any corrosion or looseness of any connection it will cause problems. Good luck!

May 04, 2014 | 1990 Buick LeSabre

1 Answer

Voltage gauge drops alternator squeals. When using plow


INSPECT BATTERY ELECTROLYTE LEVEL
INSPECT BATTERY CABLES/TERMINALS
LOAD TEST BATTERY,_______VOLTS @ 150 AMPS (Min SPEC 10.2 VOLTS @ 150 AMPS.)
INSPECT BELT(s),
TEST ALTERNATOR OUTPUT (ON THE VEHICLE,'NOT' BENCH TESTED),
1 _____AMPS @ 12 VOLTS @ 2500 RPM w/PLOW not ENGAGED
2 _____AMPS @ 12 VOLTS @ 2500 RPM w/PLOW ENGAGED ALT OUTPUT SPEC ????

Feb 04, 2014 | GMC Sierra Cars & Trucks

1 Answer

Engine-Battery


Alternator tested 'On Vehicle' of 'Bench Tested' ??
I recommend begining with a scan,followed by our shop's standard fault tracing procedure....
INSPECT BATTERY ELECTROLYTE LEVEL
INSPECT BATTERY RESTRAINT
INSPECT BATTERY CABLES/TERMINALS
****LOAD TEST BATTERY,_______VOLTS @ 150 AMPS (Min SPEC 10.2 VOLTS @ 150 AMPS.)
TEST STARTER AMP DRAW,______AMPS INITAL,_____
AMPS SUSTAINED.
****INSPECT BELT(s),
****TEST ALTERNATOR OUTPUT,_____AMPS @ 12 VOLTS @ 2500 RPM (SPEC ______ AMPS.]
****TEST FOR DRAW,______(MAX ALLOWABLE 350 Ma),

Jan 18, 2014 | 1998 Ford Mustang

3 Answers

Battery wont hold a charge


There is something drawing amps(voltage)from the battery.It can be anything,from a clock,in the radio,to an amp,or a light on in the trunk,or under a hood.

Jan 25, 2010 | 1987 Volvo 240

1 Answer

Alternator good,no output battery volts 11.5


How do you know the alternator is good? If it has no output......it's bad. Are you checking alternator voltage output at battery? You want to check voltage it at the alternator if you can acces it.....bad wires could be to blame. Check all wires from aternator, to starter, to battery. If they look anything but new, I would replace all. Have Autozone or Advanced auto do a test on the battery, they will tell you if it meets CCA (cold cranking amps) set by the Ford, both under a load and not under load.

Nov 25, 2009 | 2002 Ford E250

1 Answer

Charge light is on


WELL IF THE ALTERNATOR IS AFTER MARKET THIS COULD BE THE ISUSE YOU NEED TO KNOW WHAT IT DOING WHILE IN CAR NOT ON BENCH TEST IT COULD BE ALT PASSING BENCH TEST BUT AMP OR VOLTAGE MAY BE OFF A BIT CAN COUSE ALL TYP, ISUSE ANY WAY OEM IS BETTER LEES ISUSE HOPE THIS HELPS

Sep 21, 2009 | 1998 Dodge Neon

1 Answer

Having problem with draining battery, alternator checks good on bench test, battery checks good and starter checks good. need help where can i go next to fix this problem


Since you bench tested the alternator, and the battery has good capacity (hopefully isn't 5 years old or more), the next logical step is to do a leakage test.

Disconnect one of the battery cables (either one, I'd go with the negative one) and insert a 12 volt test light between the battery and ground of your car. Now, any current draw must go through the lamp. If it is lit with "nothing drawing any current" you can now look further for the offending circuit. Usually simple stuff like aftermarket alarm system, trunk light staying on, that sort of thing.

Even try removing fuses one at a time to localize which circuit to check.

Good luck.

Apr 27, 2009 | 1996 Chevrolet Cavalier

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