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'99 - '06 GM Truck Modifications
Engine & Performance
Bad idle and poor fuel mileage
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<blockquote data-quote="gmac53" data-source="post: 7396" data-attributes="member: 626"><p>our nbs 5.3 are notorious for the knock sensors. they are under the intake manifold and it would be best to get the harness as well. i just did mine and my truck ran 1000x bettter but back to rough idle and bad mileage. i havent read code yet but after relpacing i had advance auto clear code and codes at that time were for bad tps, i assumed it was from my egr not proprely seated but after sealing it i still have an intermitting rough idle. but even if its not the knock code it would be better to go ahead and knock it out itwill be a great investment i also replaced the injector o rings top and bottom since i was right there, dont forget the egr like i did lol</p><p></p><p></p><p>heres the link for the cheapest set of everything minus the new intake gaskets, </p><p></p><p></p><p><a href="https://www.google.com/aclk?sa=l&ai=CQSZ2viN-VsarMNXKhASGhaGAAerr0OsG0rfC06AB0uiYn5ADCAQQASgFYMnOg43kpKwToAH5973_A8gBB6oEJk_Q3LRb21nU9RJ5puv8nbsojSRUIvVXE3o4GBmizVKjdeZwWjHTwAUFoAYmgAfvh0KIBwGQBwKoB6a-G9gHAeASuNuhuLGk3fe5AQ&sig=AOD64_2xxK6GiII3ago0O1ma1FNj14jYQQ&ctype=5&q=&ved=0ahUKEwj6ubTn4_jJAhUGLyYKHacJBnAQwg8IHw&adurl=http://www.1aauto.com/engine-knock-sensor-and-harness-kit/i/1aeek00589%3Ff%3D808444%26y%3D2001%26utm_campaign%3Dgb_csv_br%26utm_content%3DEEK" target="_blank">https://www.google.com/aclk?sa=l&ai=CQSZ2viN-VsarMNXKhASGhaGAAerr0OsG0rfC06AB0uiYn5ADCAQQASgFYMnOg43kpKwToAH5973_A8gBB6oEJk_Q3LRb21nU9RJ5puv8nbsojSRUIvVXE3o4GBmizVKjdeZwWjHTwAUFoAYmgAfvh0KIBwGQBwKoB6a-G9gHAeASuNuhuLGk3fe5AQ&sig=AOD64_2xxK6GiII3ago0O1ma1FNj14jYQQ&ctype=5&q=&ved=0ahUKEwj6ubTn4_jJAhUGLyYKHacJBnAQwg8IHw&adurl=http://www.1aauto.com/engine-knock-sensor-and-harness-kit/i/1aeek00589?f=808444&y=2001&utm_campaign=gb_csv_br&utm_content=EEK</a></p></blockquote><p></p>
[QUOTE="gmac53, post: 7396, member: 626"] our nbs 5.3 are notorious for the knock sensors. they are under the intake manifold and it would be best to get the harness as well. i just did mine and my truck ran 1000x bettter but back to rough idle and bad mileage. i havent read code yet but after relpacing i had advance auto clear code and codes at that time were for bad tps, i assumed it was from my egr not proprely seated but after sealing it i still have an intermitting rough idle. but even if its not the knock code it would be better to go ahead and knock it out itwill be a great investment i also replaced the injector o rings top and bottom since i was right there, dont forget the egr like i did lol heres the link for the cheapest set of everything minus the new intake gaskets, [url]https://www.google.com/aclk?sa=l&ai=CQSZ2viN-VsarMNXKhASGhaGAAerr0OsG0rfC06AB0uiYn5ADCAQQASgFYMnOg43kpKwToAH5973_A8gBB6oEJk_Q3LRb21nU9RJ5puv8nbsojSRUIvVXE3o4GBmizVKjdeZwWjHTwAUFoAYmgAfvh0KIBwGQBwKoB6a-G9gHAeASuNuhuLGk3fe5AQ&sig=AOD64_2xxK6GiII3ago0O1ma1FNj14jYQQ&ctype=5&q=&ved=0ahUKEwj6ubTn4_jJAhUGLyYKHacJBnAQwg8IHw&adurl=http://www.1aauto.com/engine-knock-sensor-and-harness-kit/i/1aeek00589%3Ff%3D808444%26y%3D2001%26utm_campaign%3Dgb_csv_br%26utm_content%3DEEK[/url] [/QUOTE]
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'99 - '06 GM Truck Modifications
Engine & Performance
Bad idle and poor fuel mileage
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