Help me diagnose

Awenta

Active member
Sep 28, 2014
4,090
2
38
CT
The a new ecm?

If it runs on either, you have a fuel problem. Pressure or air. Don't use the either to much, or you will be creating more issues. Recently my 2006 had the same symptoms - cranks, starts on either, sometimes runs for 2-5 seconds, no codes. Would run for 2 minutes when I primed the pump. Installed a FASS fuel system- problem gone. Some have found the bleeder valve (plastic) sucked air, some have found the filter support cracked. Good luck


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That's not true at all. You could have all the fuel in the world but if the injector doesn't get the command to fire it never will.



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JimmyMac

New member
Sep 1, 2015
16
0
0
Agreed, however I understood there was no codes that would indicate an injector failure


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c20elephant

C20ELEPHANT
Apr 25, 2013
2,065
0
0
Phoenix, Arizona
If it runs on either, you have a fuel problem. Pressure or air. Don't use the either to much, or you will be creating more issues. Recently my 2006 had the same symptoms - cranks, starts on either, sometimes runs for 2-5 seconds, no codes. Would run for 2 minutes when I primed the pump. Installed a FASS fuel system- problem gone. Some have found the bleeder valve (plastic) sucked air, some have found the filter support cracked. Good luck


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Don't use ETHER period, your tapatalk corrected it for ya, wrong...
 

Stancedlb7

Cummin Stroke this Duramax
Feb 9, 2015
649
0
0
SLC, UTAH
Security light?

Codes? Ficm good? Check the edu fuse

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Going back to this question. I noticed everytime the door was opened the security light would turn on. The key fob also would not unlock and lock doors. I tried the whole over riding the security light trick but had no luck.