97 F250, Light Duty, 5.4 problem

[earlschieb]

I have a 97 F250, Light Duty, with a 5.4, recently while driving it, no load, such as trying to run 30 mph through town, or just cruising along at 55 mph, it has a miss fire, surge, chug, or bucking, but under no load sitiuations only, runs fine under a load, or at idle, or coasting. You can let off of the throttle, or push the throttle down a little and make the truck work, and the above symptoms are gone. No check engine light. Help Please!

[projectSHO89]

Standard misfire problem under load. Bad COP.

Advanced SEARCH keyword "misfire" and look for posts by either myself or jbrew.

Steve

[earlschieb]

Thanks for the information, I did go ahead a do the Advanced Search, and read all about it, interesting reading.

.

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Tonight, I drove it to the next town over, it did the usual stutter, misfire, crap, and then it misfired at a stop, at a traffic light, and 3 minutes later the check engine light came on, I have a hand held code scanner, so I checked the code, hoping for a P030x code, to tell me which cop it was, nope, I got a P0401 code (Exhaust Gas Recirculation Flow Insufficient Detected) what ever that means? Egr valve stuck open?

[projectSHO89]

Nah, probably either clogged EGR ports or a bad DPFE sensor.

Again, that advanced SEARCH is going to be your best tool.

Steve

[earlschieb]

Thanks Steve, I did the advanced search, the other day, about the cop, my biggest problem is lack of a decent internet connection makes it real tough to do much searching at 14.4k.

[projectSHO89]

Dang, that has to be painful... As much as I hate Wildblue, it's still better than 14.4K (most of the time).

Steve