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Discussion Starter · #1 ·
hey i've been hearing an engine noise (knocking) seems to happen at eng temps below 165 from about 1600 to 1700 rpm's during city driving (easy). If i give it more throttle it gets louder then dies off. if I let off then get back in it it's still there. any suggestions? 20K on truck new filters a month ago 3rd fuel filter. edge juice w/ att. otherwise stock.:help2:
thanks john
 

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Do you have the latest reflash?
 

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Discussion Starter · #3 ·
no it's all original never reflashed once. should I ?
 

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Yes I would get the latest reflash for fuel knock and engine surge.
 

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Do you notice the knock at idle? Last week I took the truck in for P0302 and P1226 codes thinking I had a bad injector. Turns out my injector harness needed to be replaced. I have roughly 22500 miles on the original flash and also just replaced the fuel filter about three weeks ago. I know that a TSB exists for the injector harness and one for balance rates (faulty injector).

Check here http://dieselplace.com/forum/showthread.php?t=54780
I can't find the TSB for checking balance rates....
 
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