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Pulsing voltage

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Old Nov 21, 2004 | 10:32 PM
  #1  
Steve Barker's Avatar
Steve Barker
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Pulsing voltage

I've seen discussions but can't seem to search them out pertaining to the "pulsing" voltage in older fords. Is there a cure or a particular reason they do this? THANKS!

steve
 
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Old Nov 22, 2004 | 12:36 AM
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thesprocket26
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From: South Central Boise
Are you talking all of the time or just at idle? I had the problem at idle. It was a few wires on my alternator. I had to clean everything up and crimp a few new wires and it has been pulse free since that day.
 
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Old Nov 22, 2004 | 03:48 AM
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f250rangerexplorer
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From: Yuba City, Ca
mine does the same thing at idle. my inside light will dim and brighten not much but enough to tell if you look at the floor when it shines at night.



 
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Old Nov 22, 2004 | 06:46 PM
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only at idle.



Originally Posted by thesprocket26
Are you talking all of the time or just at idle? I had the problem at idle. It was a few wires on my alternator. I had to clean everything up and crimp a few new wires and it has been pulse free since that day.
 
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Old Nov 22, 2004 | 08:34 PM
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does it pulse different with the lights, heater, etc on? do the headlights pulsate dim and bright too?
 
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Old Nov 22, 2004 | 08:52 PM
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From: okc
my 76 f-150 did that for the longest time....all the electronics would pulse..lights..stereo..voltage guage...had my voltage regulater tested and they said it was good...changed it anyways and whalaa!! no more pulsing..i think the regulator was fixing to go bad or was just partly faulty...they dont cost much...so if its not the problem u have a back up just in case...


SwOkcOffRoader


1976 F-150 460 780cfm 4bbl holley "Hot Rod"
1978 F-250 Snow Commander 1 Ton 4X4 35" tires
351m 500cfm 2bbl holley street avenger "Big Daddy"
1978 Ford B-700 Bus 389 4bbl holley 10 speed "future camper"
 
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Old Nov 22, 2004 | 10:36 PM
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Do you mean the flickering?
That's because the Voltage reg doesn't kick in until about 850 Rpm.
 
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Old Nov 22, 2004 | 10:42 PM
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I had the same problem. I used a newer electronic reg which seems to have fixed the problem. Mine would cut out the stereo up to about 3000 RPM.
 

Last edited by dwbachor; Nov 22, 2004 at 10:44 PM. Reason: adding info
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