7.3L Power Stroke Engine and Drivetrain | Forum profile

Do you have the correct socket to remove it? It's possible that the broken axle beating around inside has "swelled" the tube where the nut threads on. Hope not. That would be an expensive repair.

My vote is for failing T/C. What speed does this occur at? Is there a sound change at 37mph on level ground? (T/C lockup speed) Also the T/C unlocks during a downshift event on the highway.

ICP = Injection Control Pressure, this is a measurement in voltage for the HPOP pressure. It is the signal the PCM gets and tells the IPR (Injection Pressure Regulator) to open or close to maintain the desired pressure. Something else you guys should be looking at is the batteries and starter. If the engine does not crank fast enough to build 500 PSI (measured by the ICP sensor) the PCM will not signal the injectors to fire. This can be caused...

No, I would not try that. You would very likely get foaming, and foaming won't mesh well with our injection system. (It won't hydraulicly work with our injectors then.) I would just rely on regular oil changes, good quality oil, and fuel, and planned maintenance to insure out engines and injection systems live a long life....

Quote: Originally Posted by SmokeyWren Part of your MPG difference was terrain. If you drove from the BigMuddy to Denver, you gained almost 5,000 feet. If you went on up into the Rockies, you gained at least another 5,000 feet. Going home, you were going downhill almost all the way. That makes a big difference in MPG. Exactly! However, it IS widely known that IF you keep the RPM's below 2000 on these trucks, your mileage will improve...

Quote: Originally Posted by lariat 7.3 just noticed it today. will rotating them help? When you say inside do you mean inside half of tire toward frame or the center of the tire. Yes if its the center of tire its over inflated if its the inside half of the tread it would be alignment issues and now the rear tires on the front will start wearing bad.

as a sidenote if anyone is interested in my stock uppipes i'd send them if you paid for shipping and a small reflection for my handling time. they are in good shape with very little rust if any. you'd need your own bolts and nuts and gaskets but if you could use them let me know

It's probably your tune. Call Jody and talk to him about it. DP-Tuner

Quote: Originally Posted by bryrylan Do I need manifold gaskets ? and where can I get the bolts cause I know there going to be junk by the end of the night.... shoot him an email and ask.... I am willing to bet he will send you everything... sales@riffraffdiesel.com

Quote: Originally Posted by coopbronco After a long trip this weekend, the truck is leaking oil from the pan between the engine and transmission. Could any of the problems listed above also cause this; internal leakage or the torque converter. It is definitly oil and not trans fluid. Or do I have a new unrelated problem? Your oil leak is most likely coming from up top in the valley area (there's a small drain hole that drains fluids off...