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02 Mazda new alternator an good battery but the lights pulse on high an low?

I just replaced alternator which I have done many times now but this time when I was driving at night the lights have a noticeable pulse. I have xenon lights in it as well.??

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  • 54 Answers

Is it a fast pulse or a slow pulse

Posted on Jan 18, 2013

  • Gord milbury Jan 18, 2013

    They have a fast pulse. My wife sees it as well.

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Posted on Jan 02, 2017

  • 9 Answers

SOURCE: 2002 beetle charging problem

check the battery .Battery might not be charging

Posted on Dec 30, 2008

csmock132
  • 4669 Answers

SOURCE: Battery dosn't charge, alternator/voltage adapter test's good.

Did you test the Alternator on or off the truck? It might be a problem with the control system to the Alternator. The regulator need a battery feed to work, It is usually ran through an alternator fuse.

Posted on Mar 11, 2009

honeymokey
  • 3113 Answers

SOURCE: cruise causes surging, vehicle does jerky lurching

Get a good alternator not a cheap one.

Posted on Apr 21, 2009

RonPark
  • 855 Answers

SOURCE: issue with dash lights dimming while driving,

If the battery and alternator tested fine. I would have the charging system rechecked when engine is hot and at high rpm's. This way the checks are being done as if you were driving and driving for a long time. Alternators can work fine when cold but weaken when hot or stop working. This problem is not rare but only is seen occassionly. Unless it was checked at an electrical shop the average shop doesn't run these tests for they don't see the problem often enough to automaticly run them at all times. Good luck and let me know how you make out.

Posted on Sep 21, 2009

  • 4793 Answers

SOURCE: 2005 toyota tacoma battery light on. lights

if brighmess increases with speed then alternator must be okay,try the belt for tightness/slipping.

Posted on Jun 15, 2010

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1 Answer

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Check your battery cables and have someone check your alternator output voltage, it should be 14v when the car is running. Check that the belt to the alternator is not loose.

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