I can now reproduce this problem consistently. Engine warm and i'm in Park
with consistent 850 RPM idle. I then would just move my shift stick (it's
an automatic), just very slightly down (towards R but not in Reverse yet)
and hold it there and my tachometer would start bouncing up and down
repeatedly.

What could be causing this? Something loose in the distributor?

 

"Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:

> I can now reproduce this problem consistently. Engine warm and i'm in
> Park with consistent 850 RPM idle. I then would just move my shift
> stick (it's an automatic), just very slightly down (towards R but not
> in Reverse yet) and hold it there and my tachometer would start
> bouncing up and down repeatedly.
>
> What could be causing this? Something loose in the distributor?
>
>
>

If you've tied it conclusively to moving the transmission shift lever,then
why suspect the distributor? How would moving the shift lever affect the
distributor? (or the idle speed?)
Perhaps there's some switch on the shift lever that's intermittent.

--
Jim Yanik
jyanik
at
kua.net

 

"Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:

> I can now reproduce this problem consistently. Engine warm and i'm in
> Park with consistent 850 RPM idle. I then would just move my shift
> stick (it's an automatic), just very slightly down (towards R but not
> in Reverse yet) and hold it there and my tachometer would start
> bouncing up and down repeatedly.
>
> What could be causing this? Something loose in the distributor?
>
>
>

If you've tied it conclusively to moving the transmission shift lever,then
why suspect the distributor? How would moving the shift lever affect the
distributor? (or the idle speed?)
Perhaps there's some switch on the shift lever that's intermittent.

--
Jim Yanik
jyanik
at
kua.net

 

Thanx for your response Jim.

I forgot to mention that the tachometer bounces when I'm drivinng and then
come to a stop. It bounces down once and then up again....
That is why I said it could be the distributor because it happens without
moving the shift stick as well.....but I'm not really sure.


"Jim Yanik" <jyanik@abuse.gov> wrote in message
news:Xns979E7D5B8D925jyanikkuanet@129.250.170.85.. .
> "Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:
>
>> I can now reproduce this problem consistently. Engine warm and i'm in
>> Park with consistent 850 RPM idle. I then would just move my shift
>> stick (it's an automatic), just very slightly down (towards R but not
>> in Reverse yet) and hold it there and my tachometer would start
>> bouncing up and down repeatedly.
>>
>> What could be causing this? Something loose in the distributor?
>>
>>
>>
>
> If you've tied it conclusively to moving the transmission shift lever,then
> why suspect the distributor? How would moving the shift lever affect the
> distributor? (or the idle speed?)
> Perhaps there's some switch on the shift lever that's intermittent.
>
> --
> Jim Yanik
> jyanik
> at
> kua.net

 

Thanx for your response Jim.

I forgot to mention that the tachometer bounces when I'm drivinng and then
come to a stop. It bounces down once and then up again....
That is why I said it could be the distributor because it happens without
moving the shift stick as well.....but I'm not really sure.


"Jim Yanik" <jyanik@abuse.gov> wrote in message
news:Xns979E7D5B8D925jyanikkuanet@129.250.170.85.. .
> "Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:
>
>> I can now reproduce this problem consistently. Engine warm and i'm in
>> Park with consistent 850 RPM idle. I then would just move my shift
>> stick (it's an automatic), just very slightly down (towards R but not
>> in Reverse yet) and hold it there and my tachometer would start
>> bouncing up and down repeatedly.
>>
>> What could be causing this? Something loose in the distributor?
>>
>>
>>
>
> If you've tied it conclusively to moving the transmission shift lever,then
> why suspect the distributor? How would moving the shift lever affect the
> distributor? (or the idle speed?)
> Perhaps there's some switch on the shift lever that's intermittent.
>
> --
> Jim Yanik
> jyanik
> at
> kua.net

 

"Hootie" <hootie@hootie.com> wrote in news:SGCZf.6833$nf7.6765@pd7tw1no:

> Thanx for your response Jim.
>
> I forgot to mention that the tachometer bounces when I'm drivinng and
> then come to a stop. It bounces down once and then up again....
> That is why I said it could be the distributor because it happens
> without moving the shift stick as well.....but I'm not really sure.

Consider that the engine/transmission pair is mounted so it can -move-(WRT
the car body;motor mounts),and the shift linkage then goes to the
shifter,thus Opportunity for the shift lever to move when driving.

Or you could replace the igniter,which provides the signal to the ECU for
the tach.(or scope it's tach output if you have the tools)

www.tegger.com has some good data on the igniter.

--
Jim Yanik
jyanik
at
kua.net

>
>
> "Jim Yanik" <jyanik@abuse.gov> wrote in message
> news:Xns979E7D5B8D925jyanikkuanet@129.250.170.85.. .
>> "Hootie" <hootie@hootie.com> wrote in
>> news:E8pZf.5821$gO.4532@pd7tw3no:
>>
>>> I can now reproduce this problem consistently. Engine warm and i'm
>>> in Park with consistent 850 RPM idle. I then would just move my
>>> shift stick (it's an automatic), just very slightly down (towards R
>>> but not in Reverse yet) and hold it there and my tachometer would
>>> start bouncing up and down repeatedly.
>>>
>>> What could be causing this? Something loose in the distributor?
>>>
>>>
>>>
>>
>> If you've tied it conclusively to moving the transmission shift
>> lever,then why suspect the distributor? How would moving the shift
>> lever affect the distributor? (or the idle speed?)
>> Perhaps there's some switch on the shift lever that's intermittent.
>>
>> --
>> Jim Yanik
>> jyanik
>> at
>> kua.net
>
>
>

 

"Hootie" <hootie@hootie.com> wrote in news:SGCZf.6833$nf7.6765@pd7tw1no:

> Thanx for your response Jim.
>
> I forgot to mention that the tachometer bounces when I'm drivinng and
> then come to a stop. It bounces down once and then up again....
> That is why I said it could be the distributor because it happens
> without moving the shift stick as well.....but I'm not really sure.

Consider that the engine/transmission pair is mounted so it can -move-(WRT
the car body;motor mounts),and the shift linkage then goes to the
shifter,thus Opportunity for the shift lever to move when driving.

Or you could replace the igniter,which provides the signal to the ECU for
the tach.(or scope it's tach output if you have the tools)

www.tegger.com has some good data on the igniter.

--
Jim Yanik
jyanik
at
kua.net

>
>
> "Jim Yanik" <jyanik@abuse.gov> wrote in message
> news:Xns979E7D5B8D925jyanikkuanet@129.250.170.85.. .
>> "Hootie" <hootie@hootie.com> wrote in
>> news:E8pZf.5821$gO.4532@pd7tw3no:
>>
>>> I can now reproduce this problem consistently. Engine warm and i'm
>>> in Park with consistent 850 RPM idle. I then would just move my
>>> shift stick (it's an automatic), just very slightly down (towards R
>>> but not in Reverse yet) and hold it there and my tachometer would
>>> start bouncing up and down repeatedly.
>>>
>>> What could be causing this? Something loose in the distributor?
>>>
>>>
>>>
>>
>> If you've tied it conclusively to moving the transmission shift
>> lever,then why suspect the distributor? How would moving the shift
>> lever affect the distributor? (or the idle speed?)
>> Perhaps there's some switch on the shift lever that's intermittent.
>>
>> --
>> Jim Yanik
>> jyanik
>> at
>> kua.net
>
>
>

 

"Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:

> I can now reproduce this problem consistently. Engine warm and i'm in
> Park with consistent 850 RPM idle. I then would just move my shift
> stick (it's an automatic), just very slightly down (towards R but not
> in Reverse yet) and hold it there and my tachometer would start
> bouncing up and down repeatedly.
>
> What could be causing this? Something loose in the distributor?
>
>


You're fooling the computer! You're manipulating the lever so as to cause
intermittent contact with the microswitch that tells the computer whether
you're in neutral or reverse. Don't do that. It tells you nothing at all.

As far as your tach bouncing when you come to a stop, that's because your
tranny is downshifting back into first.

How long have you owned this car?

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

"Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:

> I can now reproduce this problem consistently. Engine warm and i'm in
> Park with consistent 850 RPM idle. I then would just move my shift
> stick (it's an automatic), just very slightly down (towards R but not
> in Reverse yet) and hold it there and my tachometer would start
> bouncing up and down repeatedly.
>
> What could be causing this? Something loose in the distributor?
>
>


You're fooling the computer! You're manipulating the lever so as to cause
intermittent contact with the microswitch that tells the computer whether
you're in neutral or reverse. Don't do that. It tells you nothing at all.

As far as your tach bouncing when you come to a stop, that's because your
tranny is downshifting back into first.

How long have you owned this car?

--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

 

Thanx for your response guys !

I had my motor replaced last year. Was running fine but now I get the tach
bouncing up, quickly down and then up again and slowly down to a smooth IDLE
at around 850 RPM.

So now I know the shift test I did does not prove anything. Also Canadian
tire just replaced my spark plug wires....the problem happened before they
replaced my wires.

Could it be a vacuum leak somewhere?

"TeGGeR®" <tegger@tegger.c0m> wrote in message
news:Xns979ECF4A64C0tegger@207.14.113.17...
> "Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:
>
>> I can now reproduce this problem consistently. Engine warm and i'm in
>> Park with consistent 850 RPM idle. I then would just move my shift
>> stick (it's an automatic), just very slightly down (towards R but not
>> in Reverse yet) and hold it there and my tachometer would start
>> bouncing up and down repeatedly.
>>
>> What could be causing this? Something loose in the distributor?
>>
>>
>
>
> You're fooling the computer! You're manipulating the lever so as to cause
> intermittent contact with the microswitch that tells the computer whether
> you're in neutral or reverse. Don't do that. It tells you nothing at all.
>
> As far as your tach bouncing when you come to a stop, that's because your
> tranny is downshifting back into first.
>
> How long have you owned this car?
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

Thanx for your response guys !

I had my motor replaced last year. Was running fine but now I get the tach
bouncing up, quickly down and then up again and slowly down to a smooth IDLE
at around 850 RPM.

So now I know the shift test I did does not prove anything. Also Canadian
tire just replaced my spark plug wires....the problem happened before they
replaced my wires.

Could it be a vacuum leak somewhere?

"TeGGeR®" <tegger@tegger.c0m> wrote in message
news:Xns979ECF4A64C0tegger@207.14.113.17...
> "Hootie" <hootie@hootie.com> wrote in news:E8pZf.5821$gO.4532@pd7tw3no:
>
>> I can now reproduce this problem consistently. Engine warm and i'm in
>> Park with consistent 850 RPM idle. I then would just move my shift
>> stick (it's an automatic), just very slightly down (towards R but not
>> in Reverse yet) and hold it there and my tachometer would start
>> bouncing up and down repeatedly.
>>
>> What could be causing this? Something loose in the distributor?
>>
>>
>
>
> You're fooling the computer! You're manipulating the lever so as to cause
> intermittent contact with the microswitch that tells the computer whether
> you're in neutral or reverse. Don't do that. It tells you nothing at all.
>
> As far as your tach bouncing when you come to a stop, that's because your
> tranny is downshifting back into first.
>
> How long have you owned this car?
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

 

On Fri, 07 Apr 2006 08:11:16 GMT, "Hootie" <hootie@hootie.com> wrote:

>I can now reproduce this problem consistently. Engine warm and i'm in Park
>with consistent 850 RPM idle. I then would just move my shift stick (it's
>an automatic), just very slightly down (towards R but not in Reverse yet)
>and hold it there and my tachometer would start bouncing up and down
>repeatedly.
>
>What could be causing this? Something loose in the distributor?
>


hey give this link a try

hope it helps


http://www.g2ic.com/tegtips/engine/10.html


fly

 

On Fri, 07 Apr 2006 08:11:16 GMT, "Hootie" <hootie@hootie.com> wrote:

>I can now reproduce this problem consistently. Engine warm and i'm in Park
>with consistent 850 RPM idle. I then would just move my shift stick (it's
>an automatic), just very slightly down (towards R but not in Reverse yet)
>and hold it there and my tachometer would start bouncing up and down
>repeatedly.
>
>What could be causing this? Something loose in the distributor?
>


hey give this link a try

hope it helps


http://www.g2ic.com/tegtips/engine/10.html


fly

 

On Fri, 07 Apr 2006 08:11:16 GMT, "Hootie" <hootie@hootie.com> wrote:

>I can now reproduce this problem consistently. Engine warm and i'm in Park
>with consistent 850 RPM idle. I then would just move my shift stick (it's
>an automatic), just very slightly down (towards R but not in Reverse yet)
>and hold it there and my tachometer would start bouncing up and down
>repeatedly.
>
>What could be causing this? Something loose in the distributor?
>


hey give this link a try

hope it helps


http://www.g2ic.com/tegtips/engine/10.html


fly