7.3 wont glow..
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7.3 wont glow..
I just changed the GPR when I thought that was broken but it didn't fix the problem.
When I turn the key it wont engage the glow plugs. (you can see when it does as the volt gauge drops to almost nothing...)
There are two small cables aswell from the GPR... What are those?
Any ideas?
When I turn the key it wont engage the glow plugs. (you can see when it does as the volt gauge drops to almost nothing...)
There are two small cables aswell from the GPR... What are those?
Any ideas?
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An expensive one. Thanks, gonna check those out.
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Called "Diesel Rx" but it should just work at least right?
Fleet Owner
Joined: May 2009
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From: Gilbert, PA
Do your diagnostics then get back to us. No need to butcher anything to make thing work like they were designed to
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What is that?
edit: ah Engine Oil Temperature...
I'll check it. If I understand it right that would tell the GPR that the engine is cold all the time if that was broke is that right? In that case the glow plugs should be on rather than off all the time...
edit: ah Engine Oil Temperature...
I'll check it. If I understand it right that would tell the GPR that the engine is cold all the time if that was broke is that right? In that case the glow plugs should be on rather than off all the time...
Lead Driver
Joined: Oct 2003
Posts: 8,476
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From: Madison, WI
It's not that simple. Everything goes through the PCM. The PCM reads the EOT, and sets the run time for the GPR accordingly. The MAX GPR run time is two minutes. But on _some_ trucks, if the EOT reports the engine is fully warmed up, the PCM doesn't energize the GPR at all.
But as said, start with the simple electrical tests on the relay and its circuitry.
But as said, start with the simple electrical tests on the relay and its circuitry.
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