Freightliner electrical gremlin

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Jdgreen420, Sep 22, 2020.

  1. Jdgreen420

    Jdgreen420 Bobtail Member

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    Sep 22, 2020
    0
    Hi, I am filling in for the ready mix mechanic at my quarry. We have an 08 freightliner straightjob with a ready mix body. When the truck is idling and you turn any electrical function on in the cab the gauges, lights, etc cut in and out rapidly. If you just barely get on the throttle the issue goes away. If you don’t have the truck running and the key on there is no issue. I’ve checked all the grounds and positive connections from the battery and master fuses. Checked voltage out of the alternator and at every point I could. The only thing I could find was the power getting to the 4 10am circuit breakers in the lower right hand corner of the panel area will make my power probe flicker when I check them. Tried running without the alternator no change. Only thing that will make it go away is if I just barely step on the pedal. Any suggestions? Thank you
     
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