06 freightliner columbia slow crank/no start, followed by no cab power.

Outlaw27 · Dec 16, 2012

Look in the lower left side of the block near the front. That's where the crank sensor is.

mickutzu2011 · Oct 25, 2016

cdub304 said: ↑

Also check for bad ground especially the one on the frame. Freights are known for having that ground wire get dirty and affect the starting......not sure about the fuse situation....kinda sound like you got two wires touching some where. get you a testor and follow the lighter power cord and see if you can find the point of loss of power.....make sure u pay attention to any splices or connectors
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I have problems with my ground on my freightliner columbia. Do you know how many ground points are on frame?

cdub304 · Oct 25, 2016

What kind of problems.....not sure about the columbia but my freightliner has one on the outside frame by the steps on the driver side.

mickutzu2011 · Oct 25, 2016

Outlaw27 said: ↑

Look in the lower left side of the block near the front. That's where the crank sensor is.
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cdub304 said: ↑

What kind of problems.....not sure about the columbia but my freightliner has one on the outside frame by the steps on the driver side.
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cdub304 said: ↑

What kind of problems.....not sure about the columbia but my freightliner has one on the outside frame by the steps on the driver side.
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When i cold start my truck lights go crazy, truck is shaking, and someone saw sparks under the truck

CAPETOWN · Dec 27, 2017

Heavyd said: ↑

The last two posts here are the answer. Bad main cable connections, likely frame ground to battery cable. I had a service call for a Freightliner with the exact same symptoms, even the loss of cab power after trying to crank. You would have sworn it was just bad batteries. Tried boosting and boosting. Installed 4 new batteries, same problem! I did check all the starter and ground cables, by hand, and they were all tight. I mean, I literally grabbed them with my fist and shook the cable, they were tight. But the electrical connection at the frame stud for the frame to battery cable was arced behind the nut and washer. All it took was backing the nut off 1/2 a turn and re tightening it to re-establish the electrical connection. That sucker fired right up and I felt pretty dumb!
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Lol

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