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Old 15 Jul 2004, 11:39 am
Comfortably Numb
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Default 1991 Accord Transmission Light flashing

Hello,
I have a 1991 Accord LX Automatic with 150K miles. Last night when
going home, the green S light started flashing but the car was driving
well. I pulled over and turned off the engine. After a couple of
minutes, I turned the engine back on and the flashing went away. The
car drives fine. What could it be?

On another issue, sometimes the speedometer goes briefly (1-2 secs)
down to 0 when I am driving. It happens very rarely. Once every 3+
months.

Thank you for your time and help.

CN
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  #2 (permalink)  
Old 15 Jul 2004, 12:14 pm
W
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Default Re: 1991 Accord Transmission Light flashing

speed sensor



"Comfortably Numb" <amerdsp@hotmail.com> wrote in message
news:52cdad1f.0407150839.bf60e13@posting.google.co m...
> Hello,
> I have a 1991 Accord LX Automatic with 150K miles. Last night when
> going home, the green S light started flashing but the car was driving
> well. I pulled over and turned off the engine. After a couple of
> minutes, I turned the engine back on and the flashing went away. The
> car drives fine. What could it be?
>
> On another issue, sometimes the speedometer goes briefly (1-2 secs)
> down to 0 when I am driving. It happens very rarely. Once every 3+
> months.
>
> Thank you for your time and help.
>
> CN



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  #3 (permalink)  
Old 15 Jul 2004, 02:42 pm
motsco_ _
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Posts: n/a
Default Re: 1991 Accord Transmission Light flashing

Comfortably Numb wrote:
> Hello,
> I have a 1991 Accord LX Automatic with 150K miles. Last night when
> going home, the green S light started flashing but the car was driving
> well. I pulled over and turned off the engine. After a couple of
> minutes, I turned the engine back on and the flashing went away. The
> car drives fine. What could it be?
>
> On another issue, sometimes the speedometer goes briefly (1-2 secs)
> down to 0 when I am driving. It happens very rarely. Once every 3+
> months.
>
> Thank you for your time and help.
>
> CN



============

Before replacing anything, check (all) your ground connections for
corrosion / looseness. If you live there they use road salt, you could
have a grounding problem.

Also, have you changed your tranny fluid as the manual recommends?

'Curly'

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  #4 (permalink)  
Old 15 Jul 2004, 05:35 pm
HNewbie
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Default Re: 1991 Accord Transmission Light flashing

The Green "S" light generally becomes on if you are driving the car with
Transmission in "Sports" mode, check that first. Its a small button on the
Transmission stick.

HNB
"Comfortably Numb" <amerdsp@hotmail.com> wrote in message
news:52cdad1f.0407150839.bf60e13@posting.google.co m...
> Hello,
> I have a 1991 Accord LX Automatic with 150K miles. Last night when
> going home, the green S light started flashing but the car was driving
> well. I pulled over and turned off the engine. After a couple of
> minutes, I turned the engine back on and the flashing went away. The
> car drives fine. What could it be?
>
> On another issue, sometimes the speedometer goes briefly (1-2 secs)
> down to 0 when I am driving. It happens very rarely. Once every 3+
> months.
>
> Thank you for your time and help.
>
> CN



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  #5 (permalink)  
Old 16 Jul 2004, 04:39 pm
Honda Doc
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Posts: n/a
Default Re: 1991 Accord Transmission Light flashing

Speed sensor.


"Comfortably Numb" <amerdsp@hotmail.com> wrote in message
news:52cdad1f.0407150839.bf60e13@posting.google.co m...
> Hello,
> I have a 1991 Accord LX Automatic with 150K miles. Last night when
> going home, the green S light started flashing but the car was driving
> well. I pulled over and turned off the engine. After a couple of
> minutes, I turned the engine back on and the flashing went away. The
> car drives fine. What could it be?
>
> On another issue, sometimes the speedometer goes briefly (1-2 secs)
> down to 0 when I am driving. It happens very rarely. Once every 3+
> months.
>
> Thank you for your time and help.
>
> CN



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  #6 (permalink)  
Old 18 Jul 2004, 11:40 am
kiselink@mindspring.com
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Posts: n/a
Default Re: 1991 Accord Transmission Light flashing

I had a speed sensor go out once on a different manufacture's car at
100K miles. It was easy to fix. On that car, the sensor hung off the
transmission. The sensor had a little nylon gear that was driven from
the transmission. The sensor converted the movement of the gear into
an electrical signal that was sent up to the car's control modules.
Then the control modules sent signals to the speedometer read out on
the dash board.

The car got confused with being driven around with no detected speed
and so it turned on the engine warning light!

It was very easy to replace - just undid the wiring harness, removed
the bolts holding the sensor to the tranmission, and changed out the
gear. Cost just a little bit of money.

In my service manual for a 95 accord, the location of the sensor is
not identified but it does show it as follows:

There is a wiring harness that goes to a unit that has two phillips
screws and two bolts. To replace the sensor, the two bolts are
removed. When removing the sensor, the manual warns not to loose the
little "drive link". The "drive link" is the mechanical device that
turns and juts out from the interior (of the transmission?) .


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