A while back I posted this thread trying to track down a periodic vibration/whooshing sound. After not messing with it for a while, I started trying to troubleshoot it again this weekend.
Here is what I have found: the vibration will just start arbitrarily while driving around town.
It sounds like it is coming from the bellhousing or transmission - I am leaning toward the transmission.
Once it starts, it continues if I put the transmission in neutral, if I put the transfer case in neutral, and if I just shut the engine off.
The only way it stops is if I come to a complete stop.
It never happens upon acceleration, so I don't think it is clutch chatter.
I am afraid to drive it on the freeway this way, but the one time I did and it happened, it eventually went away on it's own after about ten seconds.
Something is going on, and it does not sound good. Just trying to pinpoint the problem so I can fix it. I do have another NP435 here that I can swap in, but I REALLY don't want to pull the whole thing back apart if I can help it.
Here is what I have found: the vibration will just start arbitrarily while driving around town.
It sounds like it is coming from the bellhousing or transmission - I am leaning toward the transmission.
Once it starts, it continues if I put the transmission in neutral, if I put the transfer case in neutral, and if I just shut the engine off.
The only way it stops is if I come to a complete stop.
It never happens upon acceleration, so I don't think it is clutch chatter.
I am afraid to drive it on the freeway this way, but the one time I did and it happened, it eventually went away on it's own after about ten seconds.
Something is going on, and it does not sound good. Just trying to pinpoint the problem so I can fix it. I do have another NP435 here that I can swap in, but I REALLY don't want to pull the whole thing back apart if I can help it.
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