Surge while running down the road..... Help

cat3176

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Ok guys, Ive been searching the forum and have tried a couple of your tricks. Here's what it is and what its doing. Its a 2004 f350 with the 6.0 4x4 automatic. I just bought the truck 3 weeks ago and it has perform flawlessly till about last Thursday. I fired it up to go to work, I let it warm up. I took of for work and got out on the highway and it started surging while running down the road, it wont do it at idle. Ive cleaned the egr valve, I checked the turbo vains... and with no luck its still doing it and I dont know where to go with it. Im new to the 6.0 so any input would help thanks.
 

cat3176

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I havent checked fuel pressures yet. I need to find a set I can borrow or have someone hook up to it for me. Do you have to take one of the banjo bolts out or is there a port on the fuel rail for a gauge to screw on.
 

cat3176

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thankyou ill have to check it and get back to you with what I find tomorrow.
 

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