Question about 1998 Ford Mustang

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Lights flickering at idle stops when accelerating

I put new ends on battery cables and new alternator problem still there

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Increase idle rpm's to around 750-800 and there will not be a problem. another way is to put a smaller drive pulley on the alternator or a bigger drive pulley on the crankshaft.

Posted on Dec 27, 2013


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Posted on Jan 02, 2017

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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.

Posted on Jan 24, 2009

  • 27 Answers

SOURCE: battery light on.

some ford vehicles have an external voltage regulator. when theres more demand for power it gives it. but when theres too much itll lower it so it does not overcharge. at 1600 rpms there is more demand, plugs firing with more fuel in the cyl, if the alt is working properly the regulator could mess up and stop power from the alt. its a cheap fix or tryout...another big problem is ground if the system does not have an adequate ground nothin would work as it should.

Posted on May 11, 2009

  • 532 Answers

SOURCE: my battery light flickers when I am at a stop sign--it goes off when i accelerate. i bought a battery and the alternator tests ok.

either the belt is slipping or the alternator is losing juice at a lower rpm....i take it it was checked in park,or taken out and tested by a machine which spins fast?

Posted on May 20, 2009

  • 45 Answers

SOURCE: battery light comes on when I accelerate

did you check the fuse link to the alt. that is the center of fire wall I have seen it blow out if alt. shorts out

Posted on Jun 29, 2009

  • 72 Answers

SOURCE: battery or alternator

Check that the fan belt is ok and tight enough

Posted on Aug 01, 2009

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