Hi All,

Can anyone let me know where the tacho input comes from. I have a strange
symptom lately where the tacho is dropping to zero revs (on a '96 V8 5spd).
At almost any time, it jumps around whilst idling, drops when changing gear
etc... This problem seems to get better (ie it happens less) as it gets up
to op temp? Can anyone advise the likely cause of this and vaguely "what am
I up for this time"? Whacked this on Dweb too.

Thanks in Adv

Roly

Check the connection on the Alternator

Steve

"Roly" <rolyh@hotmail.com> wrote in message
news:WVvDc.67034$sj4.39328@news-server.bigpond.net.au...
> Hi All,
>
> Can anyone let me know where the tacho input comes from. I have a strange
> symptom lately where the tacho is dropping to zero revs (on a '96 V8
5spd).
> At almost any time, it jumps around whilst idling, drops when changing
gear
> etc... This problem seems to get better (ie it happens less) as it gets
up
> to op temp? Can anyone advise the likely cause of this and vaguely "what
am
> I up for this time"? Whacked this on Dweb too.
>
> Thanks in Adv
>
> Roly
>
>

The little white wire that connects to the back of the alternator.. In mine,
the wire had work hardened and broken within the black shroud so was fairly
elusive as it appeared form the outside to be fine.Remedy, remove the black
shroud, solder the wire to the connector, replace the shroud and plug back
in.
Cheers,
Chookie
'98 300 Tdi Disco SE
Perth Western Australia

"RADIOTWO" <steveremovewright@ntlworld.com> wrote in message
news:ShyDc.51$nz4.24@newsfe5-gui.server.ntli.net...
> Check the connection on the Alternator
>
> Steve
>
> "Roly" <rolyh@hotmail.com> wrote in message
> news:WVvDc.67034$sj4.39328@news-server.bigpond.net.au...
> > Hi All,
> >
> > Can anyone let me know where the tacho input comes from. I have a
strange
> > symptom lately where the tacho is dropping to zero revs (on a '96 V8
> 5spd).
> > At almost any time, it jumps around whilst idling, drops when changing
> gear
> > etc... This problem seems to get better (ie it happens less) as it gets
> up
> > to op temp? Can anyone advise the likely cause of this and vaguely
"what
> am
> > I up for this time"? Whacked this on Dweb too.
> >
> > Thanks in Adv
> >
> > Roly
> >
> >
>
>

On or around Sun, 27 Jun 2004 22:55:09 +0800, "R & K Fowler"
<IfowlerI@IiinetI.net.au> enlightened us thusly:

>The little white wire that connects to the back of the alternator.. In mine,
>the wire had work hardened and broken within the black shroud so was fairly
>elusive as it appeared form the outside to be fine.Remedy, remove the black
>shroud, solder the wire to the connector, replace the shroud and plug back
>in.

it'll break again... soldering conenctions on such things can result in the
wire breaking subsequently.

some time ago I invested in a proper sod-off crimping tool for those cheap
colour-coded red, blue and yellow crimps you get in boxes with a totally
crap crimping tool; with this tool they get mashed on properly and work much
better.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

Thanks everyone for the responses. As it is intermittant so I think (and
hope) you are right. In anycase, u would not believe it. Got home from
work...grabbed the multi meter (trustie one I got given about 14 years ago
with broken wires and battery held in with gaffa tape...and whammo the meter
has s!%t itself...showing 20volts (and 19v on another spare batt I have)
will have to get another 2morrow and see what its charging at. Will also
make a point of inspecting the wires out the back of Alt (beneath the shroud
too.)


Roly


ps. Austin, ur not on ur own, I'm a crimper too! but *I believe* helps to
'tin' the wires before crimping


"Austin Shackles" <austin@ddol-las.fsnet.co.uk> wrote in message
news:htdud09ean470qtkm3df9bbcl67ps678d4@4ax.com...
> On or around Sun, 27 Jun 2004 22:55:09 +0800, "R & K Fowler"
> <IfowlerI@IiinetI.net.au> enlightened us thusly:
>
> >The little white wire that connects to the back of the alternator.. In
mine,
> >the wire had work hardened and broken within the black shroud so was
fairly
> >elusive as it appeared form the outside to be fine.Remedy, remove the
black
> >shroud, solder the wire to the connector, replace the shroud and plug
back
> >in.
>
> it'll break again... soldering conenctions on such things can result in
the
> wire breaking subsequently.
>
> some time ago I invested in a proper sod-off crimping tool for those cheap
> colour-coded red, blue and yellow crimps you get in boxes with a totally
> crap crimping tool; with this tool they get mashed on properly and work
much
> better.
>
> --
> Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
> "Quos deus vult perdere, prius dementat" Euripedes, quoted in
> Boswell's "Johnson".

The little white wire that connects to the back of the alternator.. In mine,
the wire had work hardened and broken within the black shroud so was fairly
elusive as it appeared form the outside to be fine.Remedy, remove the black
shroud, solder the wire to the connector, replace the shroud and plug back
in.
Cheers,
Chookie
'98 300 Tdi Disco SE
Perth Western Australia

"RADIOTWO" <steveremovewright@ntlworld.com> wrote in message
news:ShyDc.51$nz4.24@newsfe5-gui.server.ntli.net...
> Check the connection on the Alternator
>
> Steve
>
> "Roly" <rolyh@hotmail.com> wrote in message
> news:WVvDc.67034$sj4.39328@news-server.bigpond.net.au...
> > Hi All,
> >
> > Can anyone let me know where the tacho input comes from. I have a
strange
> > symptom lately where the tacho is dropping to zero revs (on a '96 V8
> 5spd).
> > At almost any time, it jumps around whilst idling, drops when changing
> gear
> > etc... This problem seems to get better (ie it happens less) as it gets
> up
> > to op temp? Can anyone advise the likely cause of this and vaguely
"what
> am
> > I up for this time"? Whacked this on Dweb too.
> >
> > Thanks in Adv
> >
> > Roly
> >
> >
>
>

On or around Sun, 27 Jun 2004 22:55:09 +0800, "R & K Fowler"
<IfowlerI@IiinetI.net.au> enlightened us thusly:

>The little white wire that connects to the back of the alternator.. In mine,
>the wire had work hardened and broken within the black shroud so was fairly
>elusive as it appeared form the outside to be fine.Remedy, remove the black
>shroud, solder the wire to the connector, replace the shroud and plug back
>in.

it'll break again... soldering conenctions on such things can result in the
wire breaking subsequently.

some time ago I invested in a proper sod-off crimping tool for those cheap
colour-coded red, blue and yellow crimps you get in boxes with a totally
crap crimping tool; with this tool they get mashed on properly and work much
better.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".