70 MPH surge?
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70 MPH surge?
Hi guys, I have an '04 F350 6.0 with zero mods. Here's what's happens and it doesn't happen all the time but it's annoying. When I first get onto the highway and work my way up to 65-70 MPH my truck surges and there is an accompanying 'PSST' sound with the surge. Now after about 30 seconds of surging it'll go away and run normally for a few days (this truck isn't driven every day, but makes once or twice a week hunting trips or shooting range trips of 50-100 miles). If I get on it harder than normal it doesn't surge at all but I have to get on it pretty good. The surging goes away either with more gas, and/or higher speed. I have bought the EGR delete kit but haven't put it in yet. I just put in new fuel filters and oil too but it did it before and after the fuel/oil.
Any ideas?
Thanks in advance
Any ideas?
Thanks in advance
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Thanks for the info!
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Gearloose, thanks for the info I'll check it all out very carefully when I tear it apart to install the EGR Delete kit and see if it's any thing you mentioned. Thanks for the ideas on what to look for!
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Hey, you're in Little Rock, wanna come do mine....
I bought the kit myself and haven't installed it yet.
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From: Anderson, SC
Given all the input so far, I would almost bet that it's a problem with your EGR. I have a tuner on my truck and I never got around to having it retuned after my EGR delete, and it did this same thing whenever I would really lay into it. I finally got time to go get my truck retuned about 3 months ago and it hasn't done it again since then. I can only recommend having your EGR deleted. The only good place for an EGR system is the trash.
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That's a good idea for a quick test, I assume it'll throw a code but at least I would know the problem for sure!
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