1990 Ranger alternator

Sometimes charges, sometimes not. Possible cause ?

Reply to
Ray Fehrenbacher
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need new ECM.....ECM ground failure "Ray Fehrenbacher" wrote in message news:W5-dncJL-q_ChhPVnZ2dnUVZ snipped-for-privacy@posted.midwestcomputerconsultants... Sometimes charges, sometimes not. Possible cause ?

Reply to
Rick Cooper

If the ranger is the same as the aerostar (in most respects it is) the regulator is in the alternator, not in the PCM. However, I have had some experience with the Aerostar where new brushes and new regulator still netted an intermittent charge - so I had to replace the entire alternator.

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Reply to
clare at snyder dot ontario do

Worn brushes. Bad regulator. Loose connections. Bad ignition switch.

Reply to
MasterBlaster

First, turn off the MIME - Usenet News is a plain-text medium.

The first thing you check on an alternator that is starting to go intermittent is worn slip-ring brushes. If you can't get the field current to the rotor, you won't get any output power.

If you are handy, you can replace them yourself. A set of brushes will cost you under $10 at any good parts counter, a bit more if you get the whole holder with the brushes pre-assembled.

Or spend about $75 and take the unit in to a good local auto electric rebuilding shop. They will change the brushes on your old alternator, clean it out, lube or change the bearings as needed, and check for other problems like bad diodes or windings.

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Reply to
Bruce L. Bergman

Thanks to all for the assistance and direction. "Ray Fehrenbacher" wrote in message news:W5-dncJL-q_ChhPVnZ2dnUVZ snipped-for-privacy@posted.midwestcomputerconsultants... Sometimes charges, sometimes not. Possible cause ?

Reply to
Ray Fehrenbacher

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