need help diagnosing the vibration hear but mainly feel when accelerating up a hill around 50 mph or so...seems worse when in overdrive and seems to lag a bit before downshifting as the vibration worsens all the way to the downshift
I have to disagree on that. Injector issues are most pronounced during low rpm/high torque conditions, just like you describe. Just my experience. Like mhatlen said in his last post, you need a cylinder contribution test.
Just had carrier bearing replaced. The truck only seems to vibrate like this when accelerating uphill while in overdrive until throttling up to downshift. I am not a mechanic butt my drive shaft seems to have a small amount of play up towards the transfer case. It's only a slight click or movement but I would imagine it would intensify at higher RPMs or vehicle speeds
I would think that he would do the whole driveline when he changed the carrier bearing. These trucks are hard on drivelines for sure, 50,000 miles is about all you are going to get out of non greasable joints. I bought my current truck with 41,000 miles on it and the driveline was shaking. Was the first thing I did to the truck and painted the damn thing because Ford did not put any on it ??
So if you did not replace the joints do so. If you did I would have a power balance done on the engine.
Good Luck with it.
Been listening to you guys and doing research of my own.... starting to lean towards sticky injector/injectors.....runs great until under load in OD .... anyone else think injector stiction could be the culprit?
Will do.....time for a oil change so I guess I will change oil and use the arch oil in conjunction with whatever oil I use. Wanting to run a full synthetic...what is a good oil for the 6.0
had a f350 super duty w/ 6.0. It would shudder between 40-45 mph. I thought it was suspension or drive line. It took awhile to solve. I am not saying that this is your problem. What I will say is that it WAS my problem. So this won't hurt to try, it won't take you long, and it was a inexpensive fix for me. Start engine and bring up to temp. With engine running use IR temp gun to take temp readings at (8) locations where exhaust manifold exits head. If one of the readings is cold, that's the cylinder with a bad injector. (no contribution test required)
Replace o rings at HP oil rails while you are in there as you have to pull it to swap bad injector. To repeat, I am not saying this is your problem. I am saying that was my problem and solution to the 40-45 mph shudder. I fixed it in a few hours time. I hope this may help someone.
Yeah I noticed that. He must really want to tell his story even if no one cares.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ford Powerstroke Diesel Forum
5.4M posts
265.8K members
Since 2005
A forum community dedicated to Ford F-series owners and enthusiasts with a Power Stroke diesel engine. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!