The check charging system message comes on and goes off while driving. Two auto shops checked the battery and alternator and said they both are working correctly, but the message still comes on while driving. What else could be the problem?
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2005 Ford Explorer Question: check charging system message
mastertech6371 January 12, 2011, 16:22Master
while you are driving under the a load, there may be a low voltage issue with the alternator. at our shop, we do not drive the car but maybe someone has to drive and monitor the voltage.
ReplyVisitor, January 13, 2011, 17:55
Thanks, I appreciate your help.
Answer #2ZeeTech January 12, 2011, 16:55Master
Try to turn on as much consumers as possible while driving, A/C, defroster, stereo, lights, etc..
and see if the message will comes on. If does, that means the charging voltage is insufficient.
ReplyVisitor, January 13, 2011, 17:57
Thanks for the help. I will certainly try tomorrow to see what happens.
Answer #3candaautomotive from C and A Automotive, January 12, 2011, 16:59Journeyman
It may be several different things? Just because the alternator is charging it may not be charging enough to keep the light off? Also, most ford alternator have a single wire that sends a signal to the dash to let it knows how much it charging. It may be a faulty alternator, bad connection at alternator or broken wire? Its might be best to have the vehicle look at the dealership so they can trace the problem? I would hate to see you put a $300 alternator on and doesn't fix the problem?
ReplyVisitor, January 13, 2011, 17:59
Thanks for your help. Someone else told me pretty much what you said. Everything tested ok, so it may be a loose wire connection.