CM871 complete EGR tune-up now CEL 1866
07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #10
RE: CM871 complete EGR tune-up now CEL 1866
Yes I cleaned all of the pipes and those 2 lines going to the sensor aswell
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #11
RE: CM871 complete EGR tune-up now CEL 1866
Did you make sure the two lines were not cracked or tore? I know that will throw a code, happened to me in the past. Replaced the lines, code gone.


User's Signature: 2008 ProStar, OEM 600hp CM-871, 18spd, 3:42, in framed in Rawze's driveway. Every day is a fresh new episode of, "The Twilight Zone"... Rod Serling lives rent free in my head. I can smell the Chesterfields.
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #12
RE: CM871 complete EGR tune-up now CEL 1866
There are rubber lines under that red heat wrap along with the steel tubing. It is those rubber lines that with age fail. Very hard to diagnose without careful inspection.


User's Signature: 2008 ProStar, OEM 600hp CM-871, 18spd, 3:42, in framed in Rawze's driveway. Every day is a fresh new episode of, "The Twilight Zone"... Rod Serling lives rent free in my head. I can smell the Chesterfields.
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #13
RE: CM871 complete EGR tune-up now CEL 1866
I took both lines apart and inspected both lines they seem to me fine.
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #14
RE: CM871 complete EGR tune-up now CEL 1866
I got nothing then...


User's Signature: 2008 ProStar, OEM 600hp CM-871, 18spd, 3:42, in framed in Rawze's driveway. Every day is a fresh new episode of, "The Twilight Zone"... Rod Serling lives rent free in my head. I can smell the Chesterfields.
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #15
RE: CM871 complete EGR tune-up now CEL 1866
I appreciate you help though. Thanks @waterloo

rawze do you have any other suggestions
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #16
RE: CM871 complete EGR tune-up now CEL 1866
Go back and read Rawze's post, he told you these other things to look at as well.......

Reflash ecm

Tarnished connector pins

Wiring problem

It thinks the delta p is unplugged so start checking connections. Go to quickserve look at wiring diagrams.


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #17
RE: CM871 complete EGR tune-up now CEL 1866
the next step I suppose is getting ecm checked to see if it needs an update or flashing. idk
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07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #18
RE: CM871 complete EGR tune-up now CEL 1866
Do you have a quickserve account? If not go sign up it's free. Step 2 type in code number and follow troubleshooting tree.
Step 3 fix truck with newly learned information!!


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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