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Anonymous Posted on Jul 09, 2014
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Alternator light stays

1977 FORD F-100 LIGHT STAYS ON WHILE RUNNING I DID REPLACED THE ALT. AND THE VOLT. REG

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5 Related Answers

Anonymous

  • 10 Answers
  • Posted on Jan 07, 2009

SOURCE: 1977 Ford F_100 wiring diagram

http://www.ford-trucks.com/article/search.php?query=1977+ford+f_100+wiring+diagram&submit=Go

The link should provide you with a lot of useful info the truck is well just cool. ;)

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Anonymous

  • 1 Answer
  • Posted on Jan 24, 2009

SOURCE: When accelerating alternator light comes on.

Possible loose or worn alternator belt. Check the condition of the belt. If it's worn, replace it. If it's just loose, tighten it up.

c17hydro

Greg Bernett

  • 2993 Answers
  • Posted on Jul 29, 2009

SOURCE: need a fuse box wiring diagram for a 1977 ford f- 100

I need the size of motor and if it is a super cab.....the end of the title of your request is cut off...says 1977 Ford F-.....

Anonymous

  • 571 Answers
  • Posted on Nov 26, 2009

SOURCE: 2006 Ford Foucs battery light. New alernator, good battery

Your fear is probably right. Get it checked before any major overhaul.

smokie_4

  • 11 Answers
  • Posted on Feb 10, 2010

SOURCE: I have a 2006 ford focus. The battery light

I have the same problem Screw napa the can't tell the differance at least not in Georgia. They said it was the battery. Anothe machanic said it's not the altornator either could be a wiring or computer problem. I think I 'll try to trade it in

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I HAVE A 2003 PT CRUISER AND THE BATTRY LIGHT IS ON NEW BATTERY NEW ALT AND THEY SAY IT IS THE VOLTAGE REG
The PT cruiser uses a field signal from the PCM to regulate the voltage. If you are not getting approximately 14 volts at the battery terminals when the engine is running, either:
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  2. The generator field control signal from the PCM is faulty.
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Use the diagram below and check the alternator output at the point labeled "A11 6 BK/GY" If this is 14 volts and there is not 14 volts at the battery terminals, then the Fusible link is bad. If there is no voltage or way less than 15 volts at the alternator, then the alternator or the PCM field signal is bad. Ensure the connector from the PCM is connected properly.


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