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Jul 4, 2012 | 07:31 PM

CumminsNV4500

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Senior Member

Joined: Nov 2011

Posts: 226

Likes: 4

Help

Alright I keep getting a po156 code everytime I start crushing and I work at oreillys so I put a scanner on it and it said it only does it from 35 to 40 then it will go away.

Jul 5, 2012 | 03:05 PM

udderbrudder

Senior Member

Joined: Nov 2010

Posts: 534

Likes: 26

From: Coe Hill, ON

I'd check for vacuum leaks, check fuel pressure, verify no misfire, check bellows intake duct for cracks. It's a start.

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