Gauge lights flicker - Diesel Forum - TheDieselStop.com
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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 02-27-2011, 05:41 PM   #1 (permalink)
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Gauge lights flicker

'03 6.0, when I turn the key on, all the dummy lights come on and the gauges will do a sweep, shortly after that all the lights accept glow plugs will cut out or flicker and the gauges will stay at wherever they were in the sweep when the voltage is lost. Im thinking its a bad ECM ground, I cleaned all the battery grounds at the frame,engine, and the one on the passenger side inner fender, but Im not sure where or how the cab/ECM grounds to the frame. Anyone have any insight as to what is causing this?
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Old 02-27-2011, 06:00 PM   #2 (permalink)
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have you tested your batteries individually?
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Old 02-27-2011, 09:53 PM   #3 (permalink)
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They are showing 520 amps each respectively under load. Starter is bad, it was cranking so slow it had no chance of starting, replacing it tomorrow, but dont see how it could affect the gauges with just having the key on..
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Old 02-28-2011, 11:23 PM   #4 (permalink)
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Does anyone know where the rest of the grounds are? Surely it cant be just the 2 frame rails, engine, and the little one on the passenger side inner fender..
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Old 03-02-2011, 01:25 PM   #5 (permalink)
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Does anyone else think it could be the ignition switch itself? Anyone have ideas about the best way to test for that? If I could check power going into the switch and it is constant when the lights flicker, that would indicate the ignition, I believe..
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Old 03-17-2011, 07:14 PM   #6 (permalink)
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Still havent traced the problem down, does anyone have a wiring diagram for the gauges? Or a link to where I could find one? Its on 03, 6.0 .

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Old 03-18-2011, 12:45 PM   #7 (permalink)
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there was a bolt recall/ground connection issue for the 03...I'll see if I can dig it up for you...can't remember the location off the top of my head...b
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Old 03-18-2011, 01:06 PM   #8 (permalink)
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recall #04S15...bolt and ground strap lower right front side of engine...you may also want to look for a wire chafe issue for the tow haul/gear selector wire on the steering column/remove the plastic cover/remove ign. switch and look for the small bundle of wires where they contact the top of column..the wires that exit the base of the shifter...the chafe point could be the issue for the gauge flicker...b
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Last edited by 03powerstrokeuser; 03-18-2011 at 03:19 PM. Reason: add. info
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Old 03-18-2011, 03:05 PM   #9 (permalink)
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The connectors to the panel on top, they need to be cleaned.

See my instrument panel cleaning stuff.
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