2003 6.0 random idle shake
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Elder User
Joined: Oct 2014
Posts: 970
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From: Marietta, GA
2003 6.0 random idle shake
Hey guys, i recently bought an 03 F-250 6.0 Lariat crew cab FX4.
it has an EGR delete, ARP studs, and the updated oil cooler.
it has 138,xxx on the clock.
randomly, only when it is at normal operating temperature it will have a slight shake to it at idle. when i try to take off from this shaky idle it feels like it is "missing" i guess you could say. it clears up about 1/8 a mile down the road everytime. And i will go ahead and say this does not happen everytime it idles. Only maybe once or twice in a 30 minute trip.
Do you guys have any idea what might be going on?
i have not added a coolant filter yet, and it does not have synthetic oil in yet either (just bought it) i plan to use full synthetic Rotella 5w40 very soon.
i think this might be a stiction problem? but i read it is uncommon to have stiction when warmed up.
i do not have anything yet to pull codes or read the FICM yet. both batteries are good.
Thanks for the help in advance! this site has provided so much info already!
it has an EGR delete, ARP studs, and the updated oil cooler.
it has 138,xxx on the clock.
randomly, only when it is at normal operating temperature it will have a slight shake to it at idle. when i try to take off from this shaky idle it feels like it is "missing" i guess you could say. it clears up about 1/8 a mile down the road everytime. And i will go ahead and say this does not happen everytime it idles. Only maybe once or twice in a 30 minute trip.
Do you guys have any idea what might be going on?
i have not added a coolant filter yet, and it does not have synthetic oil in yet either (just bought it) i plan to use full synthetic Rotella 5w40 very soon.
i think this might be a stiction problem? but i read it is uncommon to have stiction when warmed up.
i do not have anything yet to pull codes or read the FICM yet. both batteries are good.
Thanks for the help in advance! this site has provided so much info already!
Thread Starter
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Elder User
Joined: Oct 2014
Posts: 970
Likes: 1
From: Marietta, GA
i also just did OEM fuel filters as well.
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Joined: Jun 2012
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You can get the kit from any ford dealer or on line. Having the bad idle happen after WOT indeed points to the fuel pressure as a problem, fuel pressure will be lowest at WOT. It's possible that you've damaged your injectors if that is the case, and at the least I would drive it very easy until you get the upgrade kit installed.
Brian
Brian
Thread Starter
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Elder User
Joined: Oct 2014
Posts: 970
Likes: 1
From: Marietta, GA
You can get the kit from any ford dealer or on line. Having the bad idle happen after WOT indeed points to the fuel pressure as a problem, fuel pressure will be lowest at WOT. It's possible that you've damaged your injectors if that is the case, and at the least I would drive it very easy until you get the upgrade kit installed.
Brian
Brian
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