Alternator Battery Light On Dash
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From: bridgeport ca
Alternator Battery Light On Dash
HI FOLKS! I'VE GOT AN 04 EXPED W/ 5.4 ENGINEREPLACED ALTERNATOR TWICE IN 2 DAYS.
THE PROBLEM IS, I THINK THE ALTERNATOR IS OVERCHARGING.
I'M GETTING OVER 15 VOLTS FROM ALTERNATOR.
THE BATTERY LITE ON THE DASH STAYS ON.
CLEANED BATTERY TERMINALS AND REPLACED BATTERY AS WELL!
ANY IDEAS?
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From: bridgeport ca
NOT SO MUCH CONCERNED OVER THE OVER CHARGE AS I AM THAT THE BATTERY LITE HASN'T GONE OUT ON DASH WITH NEW BATT AND ALTERNATOR ! ANY BODY HAVE DIAGNOSTIC FOR CHARGING SYSTEM ON THIS RIG?
ANY IDEAS WILL BE GREATLY APRECIATED!!!!
ANY IDEAS WILL BE GREATLY APRECIATED!!!!
Originally Posted by buzzard
The regulator is incorporated into the alternator on my '00 so it probably is so on an '04.
15 volts is not too much in and of itself, unless the voltage continues to increase above 15.5.
15 volts is not too much in and of itself, unless the voltage continues to increase above 15.5.
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Joined: Oct 2000
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From: All over Texas
Below is a list of possible problems. Specifically which are you encountering?
PINPOINT TEST A: BATTERY IS DISCHARGED OR VOLTAGE IS LOW (Index)
PINPOINT TEST B: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING (THE SYSTEM VOLTAGE DOES NOT INCREASE)
PINPOINT TEST C: THE SYSTEM OVERCHARGES (BATTERY VOLTAGE IS GREATER THAN 15.5 VOLTS)
PINPOINT TEST D: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING AND THE SYSTEM INCREASES VOLTAGE
PINPOINT TEST E: THE CHARGING SYSTEM WARNING INDICATOR IS OFF WITH THE IGNITION SWITCH IN THE RUN POSITION AND THE ENGINE OFF
PINPOINT TEST F: THE CHARGING SYSTEM WARNING INDICATOR FLICKERS OR IS INTERMITTENT
PINPOINT TEST A: BATTERY IS DISCHARGED OR VOLTAGE IS LOW (Index)
PINPOINT TEST B: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING (THE SYSTEM VOLTAGE DOES NOT INCREASE)
PINPOINT TEST C: THE SYSTEM OVERCHARGES (BATTERY VOLTAGE IS GREATER THAN 15.5 VOLTS)
PINPOINT TEST D: THE CHARGING SYSTEM WARNING INDICATOR IS ON WITH THE ENGINE RUNNING AND THE SYSTEM INCREASES VOLTAGE
PINPOINT TEST E: THE CHARGING SYSTEM WARNING INDICATOR IS OFF WITH THE IGNITION SWITCH IN THE RUN POSITION AND THE ENGINE OFF
PINPOINT TEST F: THE CHARGING SYSTEM WARNING INDICATOR FLICKERS OR IS INTERMITTENT
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From: bridgeport ca
Buzzard, I Am Pulled Between B,C & D, I'll Tell You Why.
We Have A Consistent 15.5 Volts While Running But Hasn't Gone Over That Yet. Is There A Possibillity You Could Send ALL ?
We Have A Consistent 15.5 Volts While Running But Hasn't Gone Over That Yet. Is There A Possibillity You Could Send ALL ?
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Joined: Feb 2005
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From: Ft. Worth, TX
It sounds like you may have a High Resistance connection someplace. Trace the +positive battery cable to any mechanical joint take it apart and clean it. Get all you can find. Coat the lugs with a very thin film of an electrical grease and tighten firmly.
If this don't work have an auto shop do a diagnostic.
If this don't work have an auto shop do a diagnostic.
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Here's your owners manual, the fuses are listed starting on page 252. http://www.motorcraftservice.com/?li.../04exdog3e.pdf