Doc temperature
04-13-2018, (Subject: Doc temperature ) 
Post: #1
Doc temperature
I had a 3556 fmi 18 (Means doc outlet not to temperature)and then i hooked up the computer to check Doc temperature and fuel line pressure to doser. I have attached the picture but the best temperature my Doc outlet went was 994 and yet i am still clueless why is my truck throwing a emission light and a code if regen is getting done. Any ideas? I think my metering unit and doser fuel line looks good too. I also changed the injector to see if it makes a difference.


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