[Vwdiesel] OT, problem with a different diesel engine
vwdieselbunny at yahoo.com
Sat Feb 11 12:27:09 EST 2006
No, the trans basically determines the top speed
before the governor has a chance. The engine usually
winds out at about 62-63 (unless there is a hill...)
while the governor is at about 66-67.
Also, if I let it slow down to say, 45 and accelerate
back up to 60, it will make that noise the whole way
--- gary <gbangs at cfl.rr.com> wrote:
> Governor cutting in?
> David Cook wrote:
> > Hey all-
> > My school bus exhibited a couple strange symptoms
> > while on a field trip tonight. I was wondering
> > thoughts before I mention it to the mechanics. (I
> > want to look smart! Well, that and I am just
> > curious.)
> > Anyway...
> > The bus is a '94 model International turbo diesel
> > engine, it has no computer controls or anything
> > that.
> > If I'm driving along really pushing it, the engine
> > will start making a rattling noise. It is such a
> > rattling noise that at first I thought it was the
> > handle rattling.
> > It will rattle for a half second or so, then stop
> > briefly, then rattle again. Like
> > "da-da-da-da-da...da-da-da-da-da...etc" When it
> > rattling, I notice a very slight reduction in
> > though the bus doesn't really slow down.
> > Also, during a time it is doing this, I have
> > that accelerator pedal action is delayed. I mean,
> > I press the pedal down, it will act like it didn't
> > know I did that for about half a second or so.
> > then, if I let up on the pedal, again there is
> about a
> > half second or so delay before the engine speed
> > The pedal itself still moves smoothly.
> > The really odd thing is that the bus has to be
> > for a long time before this happens--at least
> about an
> > hour. I can drive it as hard as I want for up to
> > about an hour before it will start making this
> > Today, after my afternoon route, I took an
> > trip. After driving the afternoon route with no
> > issues, we took off for the athletic trip.
> > It wasn't very long before the rattling started.
> > one point, we came to a stop light. I slowed down
> > slowly, and put it into neutral as we approached
> > light. The engine stumbled just a tad-dropped to
> > slightly lower than normal idle speed-for a second
> > so, then settled at normal idle speed.
> > After the light changed, I took off again. We
> drove a
> > few minutes before it started rattling again. As
> > came to an on-ramp, I put it in neutral again to
> > what would happen. To my surprise, the engine
> > immediately died, but started up again.
> > At the next stop (a few miles of rattling down the
> > road to get on another highway) I again let it
> > down slowly, then put it in neutral as we waited
> > the stop sign. It idled normally.
> > On the new highway, I decided to not push it as
> > and kept it right at about 55 mph. We went the
> > rest of the trip (about 45 minutes) with no
> > I decided to do an experiment on the way home. As
> > got on the highway, I drove pedal to the metal the
> > whole way.
> > It was a whole hour before it started rattling.
> > The reason I ask is that this seems so odd to me,
> > fact that it has to have driven so long before
> > funny. Its not like it just waits until the
> > warms up or something, obviously the engine has
> > at full operating temps for a very long time by
> > time this happens.
> > Anybody have any ideas? Again, the engine is all
> > mechanical, as in no computer controls. It also
> has a
> > 4-speed allison auto trans.
> > Thanks,
> > David
> > David Cook
> > Red '86 Cabriolet Diesel Powered
> > Red '90 g60 Corrado
> > Brown and White '78 Westy Campmobile "Bear"
> > and others in various states of disrepair
> > Pictures here:
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Red '86 Cabriolet Diesel Powered
Red '90 g60 Corrado
Brown and White '78 Westy Campmobile "Bear"
and others in various states of disrepair
Pictures here: community.webshots.com/user/superdave5599
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