texas_diesel
Lubbock Bum
So I've had a weird vibration since I've owned the truck (has 25k, I'm the 1st owner), and I think I've got it kind of nailed down. On a cold start, for the first 10 miles or so down the highway I'll get a vibrating sensation, usually just in the pedals but occasionally enough for a passenger to feel. Happens from ~1100-~1200 RPM.
- I've tried locking the trans into 1, 2, and 3, happens in each gear in the same RPM range, so its the engine speed, not wheel speed.
- Doesn't matter if in 2wd, 4Hi, or 2wd w/ the hubs locked, so it's probably not a driveline problem.
- From what I can tell from the idiot meter for the turbo, changing the boost level doesn't change the sensation, so it's not a stuck vane or bad bearing in there.
I'm not horribly worried about it, just curious right now. If it hasn't changed yet, it might never, so no big deal. I'll get worried when other things go wrong. So far no coolant or diesel in the oil, no coolant puking, no power loss, none of the normal signs of a blown 6.0. My only guess is a plugged/ bad EGR valve, but I haven't had the time to pull and clean that yet.
Anyone ever had or heard of something like this?
- I've tried locking the trans into 1, 2, and 3, happens in each gear in the same RPM range, so its the engine speed, not wheel speed.
- Doesn't matter if in 2wd, 4Hi, or 2wd w/ the hubs locked, so it's probably not a driveline problem.
- From what I can tell from the idiot meter for the turbo, changing the boost level doesn't change the sensation, so it's not a stuck vane or bad bearing in there.
I'm not horribly worried about it, just curious right now. If it hasn't changed yet, it might never, so no big deal. I'll get worried when other things go wrong. So far no coolant or diesel in the oil, no coolant puking, no power loss, none of the normal signs of a blown 6.0. My only guess is a plugged/ bad EGR valve, but I haven't had the time to pull and clean that yet.
Anyone ever had or heard of something like this?