E39/528i/Manual/98 - Engine accelerates by itself - idle revs@5000

Hi;

my 1998 528i has started to do some "vroom vroom" when hot, since a month.
When accelerating after a few minutes of engine warm-up, it seems to "fail"
and just does some vroom...vroom (changing from -100rpm to +100rpm) and then
goes on.

I went to pick it up from the paint shop this morning (it's been sitting
there for two weeks), my battery was dead so I had to be jumpstarted by the
mechanic's rig; All went ok until after 20 minutes of riding.
It started to do does "vroom vroom" things; and when going on a stop or red
lite, idled around 5000 to 6000 rpm. And now, everytime it's hot, (well
normal running temp) it does that, there is no way of getting around it.

Anyone has an idea ?

pmb

"Pierre-Marc Bonneau" > wrote in message
...
> Hi;
>
> my 1998 528i has started to do some "vroom vroom" when hot, since a month.
> When accelerating after a few minutes of engine warm-up, it seems to
> "fail"
> and just does some vroom...vroom (changing from -100rpm to +100rpm) and
> then
> goes on.
>
> I went to pick it up from the paint shop this morning (it's been sitting
> there for two weeks), my battery was dead so I had to be jumpstarted by
> the
> mechanic's rig; All went ok until after 20 minutes of riding.
> It started to do does "vroom vroom" things; and when going on a stop or
> red
> lite, idled around 5000 to 6000 rpm. And now, everytime it's hot, (well
> normal running temp) it does that, there is no way of getting around it.
>
> Anyone has an idea ?
>
> pmb
>

Could you clarify a few things for us? For instance, what do you mean by "
Does some vroom-vroom"? When you say "changing from -100rpm to +100rpm" I
assume you mean the swing in RPM as 100RPM is pretty slow and I'm not sure
what would happen if you got the engine to do -100RPM. Some sort of time
warp perhaps ;-) Also, are you sure that your idle speed is 5000 to 6000
RPM? Normal is usually around 600-700RPM.

Kyle.

Thanks for the concern;

By vroom vroom I mean that the engines burps a little bit, let's say I'm
driving at 3000 rpm; well it goes down to 2900 and then up to 3100 a couple
of times before accelerating (happens only when I try to accelerate);

and yes, id idles at 5000-6000RPM (would probably go higher but I don't have
the courage to let it go up there, I usually turn it off when I'm at 6000)

As you can see, because of this last problem the car is quite unusable in a
safe fashion; and probably those two problems are linked.

thanx!

pmb
----- Original Message -----
From: "Kyle and Lori Greene" >
Newsgroups: alt.autos.bmw
Sent: Saturday, November 27, 2004 7:13 PM
Subject: E39/528i/Manual/98 - Engine accelerates by itself - idle
revs@5000


>
> "Pierre-Marc Bonneau" > wrote in message
> ...
> > Hi;
> >
> > my 1998 528i has started to do some "vroom vroom" when hot, since a
month.
> > When accelerating after a few minutes of engine warm-up, it seems to
> > "fail"
> > and just does some vroom...vroom (changing from -100rpm to +100rpm) and
> > then
> > goes on.
> >
> > I went to pick it up from the paint shop this morning (it's been sitting
> > there for two weeks), my battery was dead so I had to be jumpstarted by
> > the
> > mechanic's rig; All went ok until after 20 minutes of riding.
> > It started to do does "vroom vroom" things; and when going on a stop or
> > red
> > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot, (well
> > normal running temp) it does that, there is no way of getting around it.
> >
> > Anyone has an idea ?
> >
> > pmb
> >
>
> Could you clarify a few things for us? For instance, what do you mean by
"
> Does some vroom-vroom"? When you say "changing from -100rpm to +100rpm" I
> assume you mean the swing in RPM as 100RPM is pretty slow and I'm not sure
> what would happen if you got the engine to do -100RPM. Some sort of time
> warp perhaps ;-) Also, are you sure that your idle speed is 5000 to 6000
> RPM? Normal is usually around 600-700RPM.
>
> Kyle.
>
>

"Pierre-Marc Bonneau" > wrote in message m>...
> Hi;
>
> my 1998 528i has started to do some "vroom vroom" when hot, since a month.
> When accelerating after a few minutes of engine warm-up, it seems to "fail"
> and just does some vroom...vroom (changing from -100rpm to +100rpm) and then
> goes on.
>
> I went to pick it up from the paint shop this morning (it's been sitting
> there for two weeks), my battery was dead so I had to be jumpstarted by the
> mechanic's rig; All went ok until after 20 minutes of riding.
> It started to do does "vroom vroom" things; and when going on a stop or red
> lite, idled around 5000 to 6000 rpm. And now, everytime it's hot, (well
> normal running temp) it does that, there is no way of getting around it.
>
> Anyone has an idea ?
>


Was it running fine before it went to the paintshop? How long have you had the car?


Michael

> pmb

Drunk ?
Do paint solvents contain alchool ?
Troll ?

"Michael Low" > a écrit dans le message news:
...
> "Pierre-Marc Bonneau" > wrote in message
m>...
> > Hi;
> >
> > my 1998 528i has started to do some "vroom vroom" when hot, since a
month.
> > When accelerating after a few minutes of engine warm-up, it seems to
"fail"
> > and just does some vroom...vroom (changing from -100rpm to +100rpm) and
then
> > goes on.
> >
> > I went to pick it up from the paint shop this morning (it's been sitting
> > there for two weeks), my battery was dead so I had to be jumpstarted by
the
> > mechanic's rig; All went ok until after 20 minutes of riding.
> > It started to do does "vroom vroom" things; and when going on a stop or
red
> > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot, (well
> > normal running temp) it does that, there is no way of getting around it.
> >
> > Anyone has an idea ?
> >
>
>
> Was it running fine before it went to the paintshop? How long have you
had the car?
>
>
> Michael
>
> > pmb

It was only doing the "vroom vroom" part for about a month prior to go
paintshopping;

I've had it for 3 years and it has always runned perfect

pmb

"Aldo Larrabiata" > wrote in message
...
> Drunk ?
> Do paint solvents contain alchool ?
> Troll ?
>
> "Michael Low" > a écrit dans le message news:
> ...
> > "Pierre-Marc Bonneau" > wrote in message
> m>...
> > > Hi;
> > >
> > > my 1998 528i has started to do some "vroom vroom" when hot, since a
> month.
> > > When accelerating after a few minutes of engine warm-up, it seems to
> "fail"
> > > and just does some vroom...vroom (changing from -100rpm to +100rpm)
and
> then
> > > goes on.
> > >
> > > I went to pick it up from the paint shop this morning (it's been
sitting
> > > there for two weeks), my battery was dead so I had to be jumpstarted
by
> the
> > > mechanic's rig; All went ok until after 20 minutes of riding.
> > > It started to do does "vroom vroom" things; and when going on a stop
or
> red
> > > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot,
(well
> > > normal running temp) it does that, there is no way of getting around
it.
> > >
> > > Anyone has an idea ?
> > >
> >
> >
> > Was it running fine before it went to the paintshop? How long have you
> had the car?
> >
> >
> > Michael
> >
> > > pmb
>
>

"Pierre-Marc Bonneau" > wrote in message
...
> It was only doing the "vroom vroom" part for about a month prior to go
> paintshopping;
>
> I've had it for 3 years and it has always runned perfect
>
> pmb
>
> "Aldo Larrabiata" > wrote in message
> ...
>> Drunk ?
>> Do paint solvents contain alchool ?
>> Troll ?
>>
>> "Michael Low" > a écrit dans le message news:
>> ...
>> > "Pierre-Marc Bonneau" > wrote in message
>> m>...
>> > > Hi;
>> > >
>> > > my 1998 528i has started to do some "vroom vroom" when hot, since a
>> month.
>> > > When accelerating after a few minutes of engine warm-up, it seems to
>> "fail"
>> > > and just does some vroom...vroom (changing from -100rpm to +100rpm)
> and
>> then
>> > > goes on.
>> > >
>> > > I went to pick it up from the paint shop this morning (it's been
> sitting
>> > > there for two weeks), my battery was dead so I had to be jumpstarted
> by
>> the
>> > > mechanic's rig; All went ok until after 20 minutes of riding.
>> > > It started to do does "vroom vroom" things; and when going on a stop
> or
>> red
>> > > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot,
> (well
>> > > normal running temp) it does that, there is no way of getting around
> it.
>> > >
>> > > Anyone has an idea ?
>> > >
>> >
>> >
>> > Was it running fine before it went to the paintshop? How long have you
>> had the car?
>> >
>> >
>> > Michael
>> >
>> > > pmb
>>

When its idling at 5000 and you engage 1st gear to drive away, what happens
to the engine speed? Does it do this as soon as the clutch is pushed, only
in neutral or both?

Kyle.

it goes to 5000 (and going on...) even when engaged in a gear;
which makes it difficult to drive away without drawing too much attention

My thought is on the obd2 or something computer-like like that; but might
not be

pmb

"Kyle and Lori Greene" > wrote in message
...
>
> "Pierre-Marc Bonneau" > wrote in message
> ...
> > It was only doing the "vroom vroom" part for about a month prior to go
> > paintshopping;
> >
> > I've had it for 3 years and it has always runned perfect
> >
> > pmb
> >
> > "Aldo Larrabiata" > wrote in message
> > ...
> >> Drunk ?
> >> Do paint solvents contain alchool ?
> >> Troll ?
> >>
> >> "Michael Low" > a écrit dans le message news:
> >> ...
> >> > "Pierre-Marc Bonneau" > wrote in message
> >> m>...
> >> > > Hi;
> >> > >
> >> > > my 1998 528i has started to do some "vroom vroom" when hot, since a
> >> month.
> >> > > When accelerating after a few minutes of engine warm-up, it seems
to
> >> "fail"
> >> > > and just does some vroom...vroom (changing from -100rpm to +100rpm)
> > and
> >> then
> >> > > goes on.
> >> > >
> >> > > I went to pick it up from the paint shop this morning (it's been
> > sitting
> >> > > there for two weeks), my battery was dead so I had to be
jumpstarted
> > by
> >> the
> >> > > mechanic's rig; All went ok until after 20 minutes of riding.
> >> > > It started to do does "vroom vroom" things; and when going on a
stop
> > or
> >> red
> >> > > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot,
> > (well
> >> > > normal running temp) it does that, there is no way of getting
around
> > it.
> >> > >
> >> > > Anyone has an idea ?
> >> > >
> >> >
> >> >
> >> > Was it running fine before it went to the paintshop? How long have
you
> >> had the car?
> >> >
> >> >
> >> > Michael
> >> >
> >> > > pmb
> >>
>
> When its idling at 5000 and you engage 1st gear to drive away, what
happens
> to the engine speed? Does it do this as soon as the clutch is pushed,
only
> in neutral or both?
>
> Kyle.
>
>

"Pierre-Marc Bonneau" > wrote in message
.. .
> it goes to 5000 (and going on...) even when engaged in a gear;
> which makes it difficult to drive away without drawing too much attention
>
> My thought is on the obd2 or something computer-like like that; but might
> not be
>
> pmb
>
> "Kyle and Lori Greene" > wrote in message
> ...
>>
>> "Pierre-Marc Bonneau" > wrote in message
>> ...
>> > It was only doing the "vroom vroom" part for about a month prior to go
>> > paintshopping;
>> >
>> > I've had it for 3 years and it has always runned perfect
>> >
>> > pmb
>> >
>> > "Aldo Larrabiata" > wrote in message
>> > ...
>> >> Drunk ?
>> >> Do paint solvents contain alchool ?
>> >> Troll ?
>> >>
>> >> "Michael Low" > a écrit dans le message news:
>> >> ...
>> >> > "Pierre-Marc Bonneau" > wrote in message
>> >> m>...
>> >> > > Hi;
>> >> > >
>> >> > > my 1998 528i has started to do some "vroom vroom" when hot, since
>> >> > > a
>> >> month.
>> >> > > When accelerating after a few minutes of engine warm-up, it seems
> to
>> >> "fail"
>> >> > > and just does some vroom...vroom (changing from -100rpm to
>> >> > > +100rpm)
>> > and
>> >> then
>> >> > > goes on.
>> >> > >
>> >> > > I went to pick it up from the paint shop this morning (it's been
>> > sitting
>> >> > > there for two weeks), my battery was dead so I had to be
> jumpstarted
>> > by
>> >> the
>> >> > > mechanic's rig; All went ok until after 20 minutes of riding.
>> >> > > It started to do does "vroom vroom" things; and when going on a
> stop
>> > or
>> >> red
>> >> > > lite, idled around 5000 to 6000 rpm. And now, everytime it's hot,
>> > (well
>> >> > > normal running temp) it does that, there is no way of getting
> around
>> > it.
>> >> > >
>> >> > > Anyone has an idea ?
>> >> > >
>> >> >
>> >> >
>> >> > Was it running fine before it went to the paintshop? How long have
> you
>> >> had the car?
>> >> >
>> >> >
>> >> > Michael
>> >> >
>> >> > > pmb
>> >>
>>
>> When its idling at 5000 and you engage 1st gear to drive away, what
> happens
>> to the engine speed? Does it do this as soon as the clutch is pushed,
> only
>> in neutral or both?
>>
>> Kyle.
>>


It sounds like the throttle is stuck open. Also check around the foot
pedal. Make sure the carpet or anything else is not stuck on or behind it.

Kyle.

Thanks!

I brought it this morning to my dealer (Canbec in MTL,qc), and the mechanic
just told me the throttle assembly needed a severe clean, it that it might
be all. But, he let undergo that this might not be it...

Still, you aimed good thanks!
Hopes this will work though (2 hours of labor @90+...)!

pmb

"Kyle and Lori Greene" > wrote in message
...
>
> "Pierre-Marc Bonneau" > wrote in message
> .. .
> > it goes to 5000 (and going on...) even when engaged in a gear;
> > which makes it difficult to drive away without drawing too much
attention
> >
> > My thought is on the obd2 or something computer-like like that; but
might
> > not be
> >
> > pmb
> >
> > "Kyle and Lori Greene" > wrote in message
> > ...
> >>
> >> "Pierre-Marc Bonneau" > wrote in message
> >> ...
> >> > It was only doing the "vroom vroom" part for about a month prior to
go
> >> > paintshopping;
> >> >
> >> > I've had it for 3 years and it has always runned perfect
> >> >
> >> > pmb
> >> >
> >> > "Aldo Larrabiata" > wrote in message
> >> > ...
> >> >> Drunk ?
> >> >> Do paint solvents contain alchool ?
> >> >> Troll ?
> >> >>
> >> >> "Michael Low" > a écrit dans le message news:
> >> >> ...
> >> >> > "Pierre-Marc Bonneau" > wrote in message
> >> >> m>...
> >> >> > > Hi;
> >> >> > >
> >> >> > > my 1998 528i has started to do some "vroom vroom" when hot,
since
> >> >> > > a
> >> >> month.
> >> >> > > When accelerating after a few minutes of engine warm-up, it
seems
> > to
> >> >> "fail"
> >> >> > > and just does some vroom...vroom (changing from -100rpm to
> >> >> > > +100rpm)
> >> > and
> >> >> then
> >> >> > > goes on.
> >> >> > >
> >> >> > > I went to pick it up from the paint shop this morning (it's been
> >> > sitting
> >> >> > > there for two weeks), my battery was dead so I had to be
> > jumpstarted
> >> > by
> >> >> the
> >> >> > > mechanic's rig; All went ok until after 20 minutes of riding.
> >> >> > > It started to do does "vroom vroom" things; and when going on a
> > stop
> >> > or
> >> >> red
> >> >> > > lite, idled around 5000 to 6000 rpm. And now, everytime it's
hot,
> >> > (well
> >> >> > > normal running temp) it does that, there is no way of getting
> > around
> >> > it.
> >> >> > >
> >> >> > > Anyone has an idea ?
> >> >> > >
> >> >> >
> >> >> >
> >> >> > Was it running fine before it went to the paintshop? How long
have
> > you
> >> >> had the car?
> >> >> >
> >> >> >
> >> >> > Michael
> >> >> >
> >> >> > > pmb
> >> >>
> >>
> >> When its idling at 5000 and you engage 1st gear to drive away, what
> > happens
> >> to the engine speed? Does it do this as soon as the clutch is pushed,
> > only
> >> in neutral or both?
> >>
> >> Kyle.
> >>
>
>
> It sounds like the throttle is stuck open. Also check around the foot
> pedal. Make sure the carpet or anything else is not stuck on or behind
it.
>
> Kyle.
>
>