> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of Kyle
> Vanditmars
> Ok gents, this has been puzzling me for a while...
>
> When I'm coasting (fully closed throttle,) and the indicated RPM
> drops below
> 1000, I start to hear the RPM go up and down very slightly.
> Maybe 100RPM up
> and then back down to where it should be. The truck does this in both O/D
> and 3rd, I haven't tried 2nd or 1st yet.
>
<snip>
> So, what on earth is happening? TIA for any advice.
>
Sounds to me like it's just the normal downshifting of the automatic. In
general terms, as you slow down, OD turns off, it downshifts to 3rd, 2nd and
first as your speed decreases and somewhere in there the torque converter
unlocks. Each of those changes will alter your rpm somewhat.
RayB
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:45:53 EST