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Lights Flickering..power surges

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Old Dec 5, 2004 | 03:16 AM
  #1  
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Tbone97
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Lights Flickering..power surges

Question for all??
I have a 2001 F150 XLT 4x4 adn the light (headlights,internal dash, and dome lights continuously flicker at idle and driving. In the past week I have replaced the Alternator, battert, serpentine belt, Idle Arm controller and spent over $500 bucks at the Ford dealership to isolate the problem......still nothing. Once I remove the battery cable while running the ALT puts our 15-15.22 volts..(lights are on steady::::::::

Hook the cables up and it starts to flicker.. The Ford Fact tech has no idea what the problem is and recommends to do a complete electrical check at $100/hour for 5-6 hours...I think that it is crazy that he can't isolate the problem with the dealership computers..

Looking for any suggestions or experts out there to assist me find the problem.

Thanks,
 
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Old Dec 5, 2004 | 01:29 PM
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fixer1
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I think you need to revisit the items you have already replaced. sounds like you missed something. with engine off do lights flicker? perhaps the alternator has a problem. is it rebuilt? some are bad have it rechecked.
 
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Old Dec 5, 2004 | 01:59 PM
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low
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Yeah. Did you replace the alternator? Was it an aftermarket one? Certain parts need to be replaced with Ford or Motorcraft parts. Alternators and master cylinders are two of those items.
 
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Old Dec 5, 2004 | 05:40 PM
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LxMan1
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From: Louisville,Ky.
Sounds like a bad voltage regulator in the alternator. Maybe you just got a bad one. Also, check the chassis to engine grounds.
 
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Old Dec 6, 2004 | 01:05 AM
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Thanks for the info:

I have replaced 3 Brand new Autolite Platinum alternators...they test fine at the auto supply....The Ford dealership assured me it was the alternator adn guranteed it would work with a motorcraft alt....., so they replaced it with a motorcraft. this past Friday......same problem with the surging. As I mentioned the surging only occurs while running. Thanks for the help and comments.

Perplexed Tom


Originally Posted by fixer1
I think you need to revisit the items you have already replaced. sounds like you missed something. with engine off do lights flicker? perhaps the alternator has a problem. is it rebuilt? some are bad have it rechecked.
 
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Old Dec 6, 2004 | 01:09 AM
  #6  
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Tbone97
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Thanks for the help;

I have replaced 3 Brand new Autolite Platinum alternators...they test fine at the auto supply....The Ford dealership assured me it was the alternator and guranteed it would work with a motorcraft alt....., so they replaced it with a motorcraft this past Friday......same problem with the surging. I had them put the Autolite back on. As I mentioned the surging only occurs while running and only with the battery connected. I guess I will look into the ground to the engine,,,,,seems like a short Thanks for the help and comments.

Perplexed Tom
 
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