Detroit 60series voltage drops

Kw1999 · Sep 13, 2022

Kernol1996 said: ↑

I have a 2006 Freightliner with a 60series and I’ve been having voltage problems where at normal idle 13.6-14.0 volts at high idle 13.3-13.5 and driving down the road 12.7-13.3 every so often when I’ve got the cruise set and go down a slight decline the voltage will go up to like 13.5 and when the truck needs power going up a rise in the road the voltage will drop to 12.5 or Lower and the battery light will come on, I’ve put new alternator, batteries, starter, ground cables, ecm, and v pod on and no one can tell me what’s wrong, the company shop tells me that they have drove it and nothing was wrong (they think a frat drive is around the yard at a max of 5-10mph and it was in my head I’ve tried to check small things like fuses and making sure the battery cables are tight and clean and nothing stupid and obvious
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Kw1999 · Sep 13, 2022

Kernol1996 said: ↑

I have a 2006 Freightliner with a 60series and I’ve been having voltage problems where at normal idle 13.6-14.0 volts at high idle 13.3-13.5 and driving down the road 12.7-13.3 every so often when I’ve got the cruise set and go down a slight decline the voltage will go up to like 13.5 and when the truck needs power going up a rise in the road the voltage will drop to 12.5 or Lower and the battery light will come on, I’ve put new alternator, batteries, starter, ground cables, ecm, and v pod on and no one can tell me what’s wrong, the company shop tells me that they have drove it and nothing was wrong (they think a frat drive is around the yard at a max of 5-10mph and it was in my head I’ve tried to check small things like fuses and making sure the battery cables are tight and clean and nothing stupid and obvious
Click to expand...

Kw1999 · Sep 13, 2022

Hello friend wore you able to fix the problem? I'm struggling with same issue

Banks27909 · May 25, 2024

Kernol1996 said: ↑

I have a 2006 Freightliner with a 60series and I’ve been having voltage problems where at normal idle 13.6-14.0 volts at high idle 13.3-13.5 and driving down the road 12.7-13.3 every so often when I’ve got the cruise set and go down a slight decline the voltage will go up to like 13.5 and when the truck needs power going up a rise in the road the voltage will drop to 12.5 or Lower and the battery light will come on, I’ve put new alternator, batteries, starter, ground cables, ecm, and v pod on and no one can tell me what’s wrong, the company shop tells me that they have drove it and nothing was wrong (they think a frat drive is around the yard at a max of 5-10mph and it was in my head I’ve tried to check small things like fuses and making sure the battery cables are tight and clean and nothing stupid and obvious
Click to expand...

I had that issue. There’s a small wire bolted onto the altanator. The nut was loose. Tightened it and no more issues

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Detroit 60series voltage drops

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