05 rough idle - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 09-07-2009, 10:05 PM Thread Starter
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Exclamation 05 rough idle

I have an 05' duramax, really rough idle between 1000-2000 rpm, but if you step on the gas it smoothes out. What's up, please help.
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post #2 of 4 (permalink) Old 10-22-2009, 04:39 AM
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I am not really Familar with Duramax's I don't know if they reference their parts like Ford does with Powerstroke, But I am gonna say check your FICM/IDM, " I am not sure If Duramax References the same name for the Fuel Injection Module. That's why I bolded it Id also check your ICP sensor, IPR, and it could be an injector issue as well.


Are you throwing any codes. Id check your MAP/MAT sensor as well. check your intercooler hoses as well.

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post #3 of 4 (permalink) Old 10-22-2009, 05:25 AM
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Do you have a Check Engine Light? Do you have a tune/programer on it?
Have you checked if your fuel filter is on properly?

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post #4 of 4 (permalink) Old 10-25-2009, 05:29 PM
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A code check as well as checking balance rates will be the first place to start

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