Originally Posted by 29FOOTERJAYCO
I am new here. Saw this and I I think this is what I may have in my E450. I also heard the Ford torque converters slip and make noise.
Hopefully not a stupid question. How do you tell? Mine makes a little noise at about 60mph and it's right when it's about to shift.
Welcome to the Jayco Owners Forums (JOF).
My suggestion would be to add the idler pulley and determine if the noise goes away. Adding the idler pulley is a good and not overly challenging modification to do anyway and if it doesn't help today, it will as the belt ages.
For mine, the sound \ vibration was around ~2000 rpm (+or- a few hundred) and I don't remember what mph that rpm relates to, but it wasn't the mph in particular as it is with the RPM.
I could also test this with being in Park and idling up the engine, you could try that as well and listen and feel for a vibration around ~2000 (check the earlier comments for rpm specifics). ~CA