Question about 2000 Ford F250 Super Duty Crew Cabs

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My batt.dash light came on so I checked the batteries and they are fine. So I checked the alternater and it didn't put out more then 12 volts at 2,000 rpms and it got real hot so I got a new one and it did the same thing. Can you tell me what you think. Thanks

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Check the maxi fuses to see if 1 is blown. If not check the wiring from the ALT. to the battery,also to the starter for breaks,corrosion.

Posted on Jul 27, 2009

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Posted on Jan 02, 2017

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2 Answers

I just replaced battery and alternater but the battery died hile driving and once i jump the car it ill run for thirty seconds then die.


you've had the misfortune of getting a bad rebuilt alternator-sorry-they should give you another one -I hope its not hard to replace-Denny

Nov 05, 2013 | 2004 Chevrolet Impala

1 Answer

Interior Dash Lights dim, brake & battery warning lights flash on and off.


Sounds like your alternater, get a multimeter set it to volts start the car then check the battery is getting 14 or over volts from the alternater to the battery , if your getting less than that it's not putting enough volts back to the battery to run the car with good luck colin

Jun 15, 2017 | 2003 Mitsubishi Galant

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2005 lincon aviator charing system 12.2 volts after alternator install


check the black/orange wire at the alternator for battery voltage if no power check the fuesable link ( A )

check the orange/light blue wire at the alternator for battery voltage if no power check the fuesable links ( B & C )

check the light green/red wire for 12 volt with the engine running if no power replace the PCM.

if all wires have the proper voltage then replace the alternator

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Dec 31, 2011 | Oldsmobile Aurora Cars & Trucks

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Hello, MY 2005 Nisan frontier will not start. About 3 days ago, the battery light would stay on after the engine started...had the battery checked and it was fine...then serviced it yesterday but it still...


Battery might seem fine on a routine check, but the crancking amp power is not there anymore, seems that your alternator is not charging it anymore, have the alternator checked and replaced if needed, the battery might need replacing too.

Aug 23, 2011 | 2005 Nissan Frontier

1 Answer

I have a2001 Saturn SL and the battery light came on,Ireplaced the battery and had the Alternater checked but the battery light stays on. Advance Auto Parts said the alternater is not chargeing


Battery light usually means the alternator is not charging, get yourself a multimeter, select Volts, put red probe on positive and black probe on negative while the car is running, it should read above 13 Volts, not higher than high 14s, if it reads 12 volts or lower while engine is running than your charging system, alternator mainly, needs attention, any decent mechanic can check this in 2 minutes.

Jun 16, 2011 | Saturn LS Cars & Trucks

1 Answer

When the car is left overnight the battery is flat the next day. Also the dash boad lights are on indicating a problem with the brakes and the airbag.


START THE CAR, CHECK VOLTAGE AT BATTERY WHILE RUNNING AT HIGH IDLE. VOLTAGE SHOULD BE SOMEWHERE BETWEEN 13.80 TO 14.80 OVER 14 IS BETTER. IF THAT IS OK THERE MAY BE A BATTERY DRAIN. TO CHECK FOR A DRAIN, TURN OFF ALL SWITCHES, CLOSE ALL DOORS , INCLUDING GLOVE COMP. DISCONNECT NEG. BATT. CABLE, PUT 12 VOLT CIRCUIT TESTER ONE END ON NEG. BATT TERM. THE OTHER END ON THE NEG CABLE. IF THE LIGHT COMES ON THERE IS A DRAIN. NO LIGHT - NO DRAIN. IF NO DRAIN HAVE THE BATTERY TESTED AT A CERTIFIED ELECTRICAL SHOP

Jan 02, 2011 | Peugeot Liberte Cars & Trucks

1 Answer

Battery light will not go off. Battery is charged and we replaced the alternater.


Put a volt meter on the battery and start the vehicle,see if the alternator is charging to the battery,it should read 14.25 volts with all lights and blower off,and should not be less than 13.75 volts,with headlights on,and ac on high blower motor,it should read 13.65 volts,to 14.25 volts.Also check all fuses to make sure they are not blown,and make sure the large wire on the alternator shows 12 volts or more with the key off.If this wire does not show voltage,or less than battery voltage(12 volts) then that wire is not connecting to the battery positive side.

Oct 12, 2010 | 2003 Ford Explorer

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