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  #1 (permalink)  
Old 11 Sep 2010, 01:43 am
Cameo
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Default Blinking D4 shift indicator

Last (and first) time it happened was over a year ago, and now it
happened again. I parked my '94 Accord for a short time to pick up a
newspaper and when I tried to start the car again, I noticed the D4
shift indicator in the instrument panel was blinking. This time I knew
what to expect when trying to shift into a forward gear: the car hardly
moved, as if the engine was not engaging the transmission firmly (or the
transmission the wheels.) The RPM was there, but the car was hardly
moving. Only the reverse seemed to work OK. Having been through this
experience before, I suspected that the problem will cure itself by just
letting the car park a bit longer before I start it again. Sure enough,
that's what happened and I was able to drive on fine.

This is one nasty problem, because the Honda dealer supposedly already
fixed it after the first occurance by replacing the shift control
solenoid valve assembly but now I think that was a wrong and unnecessary
fix. The real cause must be somewhere else. I suspect this problem might
be related to another similar problem I've had a couple times in the
last two years where the car would not even start after some short
stops, usually on a hot day. Most of you guys were betting on that one,
when I first reported it here last year, that it was caused by a
failing main relay. In that case the engine would not even start, but
the problem would disappear after waiting with the start for a few
minutes.

Now I wonder if the failing main relay might be causing both of these
problems. I'm afraid to take the car to the same Honda dealer who might
try to sell me yet another shift control solenoid that does not really
fix the problem.

What do you think, guys? Should I try another Honda dealer or an
independent Honda shop? I don't really have the tools and know-how to
fix it myself. Having some insight from you, however, might help me to
judge if the next service technician really knows what he is supposed
to.

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  #2 (permalink)  
Old 11 Sep 2010, 08:31 am
J.L.Hemmer
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Default Re: Blinking D4 shift indicator

On Fri, 10 Sep 2010 23:43:13 -0700, "Cameo" <cameo@invalid.invalid>
wrote:


>to.

When my D4 started to blink, the problem WAS solved with a
transmission control module (the computer). YMMV
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  #3 (permalink)  
Old 11 Sep 2010, 11:29 am
jim beam
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Default Re: Blinking D4 shift indicator

On 09/10/2010 11:43 PM, Cameo wrote:
> Last (and first) time it happened was over a year ago, and now it
> happened again. I parked my '94 Accord for a short time to pick up a
> newspaper and when I tried to start the car again, I noticed the D4
> shift indicator in the instrument panel was blinking. This time I knew
> what to expect when trying to shift into a forward gear: the car hardly
> moved, as if the engine was not engaging the transmission firmly (or the
> transmission the wheels.) The RPM was there, but the car was hardly
> moving. Only the reverse seemed to work OK. Having been through this
> experience before, I suspected that the problem will cure itself by just
> letting the car park a bit longer before I start it again. Sure enough,
> that's what happened and I was able to drive on fine.
>
> This is one nasty problem, because the Honda dealer supposedly already
> fixed it after the first occurance by replacing the shift control
> solenoid valve assembly but now I think that was a wrong and unnecessary
> fix. The real cause must be somewhere else. I suspect this problem might
> be related to another similar problem I've had a couple times in the
> last two years where the car would not even start after some short
> stops, usually on a hot day. Most of you guys were betting on that one,
> when I first reported it here last year, that it was caused by a failing
> main relay. In that case the engine would not even start, but the
> problem would disappear after waiting with the start for a few minutes.
>
> Now I wonder if the failing main relay might be causing both of these
> problems. I'm afraid to take the car to the same Honda dealer who might
> try to sell me yet another shift control solenoid that does not really
> fix the problem.
>
> What do you think, guys? Should I try another Honda dealer or an
> independent Honda shop? I don't really have the tools and know-how to
> fix it myself. Having some insight from you, however, might help me to
> judge if the next service technician really knows what he is supposed to.
>


what code are you getting?

--
nomina rutrum rutrum
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  #4 (permalink)  
Old 11 Sep 2010, 01:36 pm
Cameo
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Default Re: Blinking D4 shift indicator

"jim beam" <me@privacy.net> wrote:
>> I don't really have the tools and know-how to
>> fix it myself. Having some insight from you, however, might help me
>> to
>> judge if the next service technician really knows what he is supposed
>> to.
>>

>
> what code are you getting?


I don't have a code reader.

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  #5 (permalink)  
Old 11 Sep 2010, 09:06 pm
jim beam
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Default Re: Blinking D4 shift indicator

On 09/11/2010 11:36 AM, Cameo wrote:
> "jim beam" <me@privacy.net> wrote:
>>> I don't really have the tools and know-how to
>>> fix it myself. Having some insight from you, however, might help me to
>>> judge if the next service technician really knows what he is supposed
>>> to.
>>>

>>
>> what code are you getting?

>
> I don't have a code reader.


you don't need one for the 94. use a bent paperclip on the readout
connector, and get the code from the gauge light flashes.

--
nomina rutrum rutrum
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  #6 (permalink)  
Old 11 Sep 2010, 11:22 pm
Cameo
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Default Re: Blinking D4 shift indicator

"jim beam" <me@privacy.net> wrote:
> you don't need one for the 94. use a bent paperclip on the readout
> connector, and get the code from the gauge light flashes.


Oh, I see ... There is a blue plastic female connector under the
glove box with a 3-prong and a 2-prong male connector stuck in it. I
assume the the latter is the readout connector, right? It has a red and
green wire connected to it.

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  #7 (permalink)  
Old 12 Sep 2010, 08:24 am
Tegger
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Default Re: Blinking D4 shift indicator

"Cameo" <cameo@invalid.invalid> wrote in news:i6hkhu$g39$1@news.eternal-
september.org:

> "jim beam" <me@privacy.net> wrote:
>> you don't need one for the 94. use a bent paperclip on the readout
>> connector, and get the code from the gauge light flashes.

>
> Oh, I see ... There is a blue plastic female connector under the
> glove box with a 3-prong and a 2-prong male connector stuck in it. I
> assume the the latter is the readout connector, right? It has a red and
> green wire connected to it.
>




The 2-prong is the one.

Turn the key to "II" after inserting the paper clip.


--
Tegger
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  #8 (permalink)  
Old 12 Sep 2010, 01:10 pm
Cameo
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Default Re: Blinking D4 shift indicator

"Tegger" <invalid@example.com> wrote:
> The 2-prong is the one.
>
> Turn the key to "II" after inserting the paper clip.


Thanks for the confirm, Tegger. I did as you wrote and the D4 light
returned a code with a series of flashes. After about 2 secs of setting
the key to position 2, there was one short blink followed by a long
pause, then 8 short blinks in rapid succession. This sequence then kept
repeating. I'm not sure whether that 1st blink with the long pause
should be interpreted as one long flash that would mean 10, or just 1.
Adding the blinks together in the first case would mean code 18 (10 +
1), in the latter case code 9 (1 + 8). However, the code chart I got
only goes up to 15.

In any case, I made a short video clip of the flashing sequence so you
can see it for yourself and let me know how to interpret it. The video
quality is pretty crappy from my shaking hand, but you can still see the
D4 shift indicator flashes pretty clearly. You should be able to get the
video streaming from the following link:

http://picasaweb.google.com/lh/photo...eat=directlink



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  #9 (permalink)  
Old 12 Sep 2010, 04:16 pm
Tegger
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Default Re: Blinking D4 shift indicator

"Cameo" <cameo@invalid.invalid> wrote in
news:i6j52s$anb$1@news.eternal-september.org:

> "Tegger" <invalid@example.com> wrote:
>> The 2-prong is the one.
>>
>> Turn the key to "II" after inserting the paper clip.

>
> Thanks for the confirm, Tegger. I did as you wrote and the D4 light
> returned a code with a series of flashes. After about 2 secs of
> setting the key to position 2, there was one short blink followed by a
> long pause, then 8 short blinks in rapid succession. This sequence
> then kept repeating. I'm not sure whether that 1st blink with the long
> pause should be interpreted as one long flash that would mean 10, or
> just 1. Adding the blinks together in the first case would mean code
> 18 (10 + 1), in the latter case code 9 (1 + 8). However, the code
> chart I got only goes up to 15.




You've got codes 1 and 8.

How does the transmission behave if you put the lever in 2 instead of D4?




--
Tegger
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  #10 (permalink)  
Old 12 Sep 2010, 09:22 pm
Cameo
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Default Re: Blinking D4 shift indicator

"Tegger" <invalid@example.com> wrote:
> You've got codes 1 and 8.


Oh, that makes sense. I just didn't know the computer can save multiple
codes. Can they be codes from different episodes or they are just from
the last one? I wonder because before this last episode I had a similar
one earlier but at that time I could not even start the car after a
short stop. That's when most of you guys suspected the main relay as the
cause. Unfortunately I still didn't have the chance to watch the
odometer's needle during cranking (as you suggested) at such episode.
Now I wonder if one of the two codes was produced et that earlier
episode and the other code at this last one. What if they did not reset
the earlier code? How would you clear it anyway?

I got hold of the diagnostic troubleshooting chart for codes 1 and 8 and
both of them suggest solenoids located next to each other: the lock-up
control (code 1) and shift control (code 8) solenoids. However, as the
shift control solenoid was replaced last year (probably unnecessarily) I
doubt that would be at fault this time.

> How does the transmission behave if you put the lever in 2 instead of
> D4?


It behaves normally now but I'm not sure if that was also the case
during the episode.

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