Why is am I getting a service charging system message?
03-12-2019, 10:34 PM
#2
Instructor
Can’t say if it would but when I would come up to a light with the brakes on I would get that same message on my DIC. Come to find out my alternator voltage was dropping into the high 12s thus getting the message which immediately cleared once I accelerated. I put a Mechman alternator on and haven’t seen that display sense.
03-13-2019, 10:38 PM
#4
I bought a new alternator and it went away shortly after I started the engine, but then my voltage would go up and down. As low as nine volts and then as high as fourteen. Ive been told it could be a bad ground. I assumed it was the knock sensor since tht was the only wire I found damaged. How could the harmonic balancer cause that?
03-14-2019, 07:32 AM
#6
Pro
Member Since: Jul 2016
Location: Treasure Island, Lake McQueeney, Tx
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If the harmonic balancer is bad, the belt slips, causing the alternator to give inconsistent voltage. It usually makes a chirping sound. It could also be a bad belt or belt tensioner. It could be lots of things, good luck.
