I have an 06 2500 with a Cummings engine ,so ive recently i noticed that my voltage gauge drops when im driving sometimes and the blower fan slows down then goes back to normal within the last year the alternator has been replaced and the blower fan and control module i have read that the fuel heaters can cause this symptom any input is appreciated thanks
1st it is CUMMINS there is no g.
Check all of the battery connections and grounds are clean and tight.
This is happening while driving down the road or when first starting at idle?
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