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Today's topics:
* TOYOTA SEZ IT HAS [another] FIX FOR PEDAL ... DO YOU BELIEVE IT? - 2
messages, 2 authors
http://groups.google.com/group/alt.autos.nissan/t/b3778869cfbea966?hl=en
* FineDrive 3D Style GPS Navigator - 1 messages, 1 author
http://groups.google.com/group/alt.autos.nissan/t/1f71e1d5450bb787?hl=en
* 1990 Nissan Sentra 1.6L 4speed - followup on stumble during acceleration - 3
messages, 2 authors
http://groups.google.com/group/alt.autos.nissan/t/f9821d0c76287d5e?hl=en
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TOPIC: TOYOTA SEZ IT HAS [another] FIX FOR PEDAL ... DO YOU BELIEVE IT?
http://groups.google.com/group/alt.autos.nissan/t/b3778869cfbea966?hl=en
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== 1 of 2 ==
Date: Fri, Feb 19 2010 7:08 pm
From: me
On Fri, 19 Feb 2010 08:24:57 -0800, jim beam <me@privacy.net> wrote:
>> There is plenty of
>> evidence that Toyota has known about the sticky accelerator pedals for
>> at least 3 years.
>
>you mean all 12 vehicles? out of how many million? and how many
>billion driver miles?
Funny, everyone else seems to have a different count than you.
== 2 of 2 ==
Date: Sat, Feb 20 2010 8:51 am
From: clare@snyder.on.ca
On Fri, 19 Feb 2010 22:08:22 -0500, me <noemail@nothere.com> wrote:
>On Fri, 19 Feb 2010 08:24:57 -0800, jim beam <me@privacy.net> wrote:
>
>>> There is plenty of
>>> evidence that Toyota has known about the sticky accelerator pedals for
>>> at least 3 years.
>>
>>you mean all 12 vehicles? out of how many million? and how many
>>billion driver miles?
>
>Funny, everyone else seems to have a different count than you.
12 is the CONFIRMED number in Canada.
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TOPIC: FineDrive 3D Style GPS Navigator
http://groups.google.com/group/alt.autos.nissan/t/1f71e1d5450bb787?hl=en
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== 1 of 1 ==
Date: Sat, Feb 20 2010 1:31 am
From: jolly
FineDrive 3D Style GPS Navigator
http://www.techespot.com/2009/12/finedrive-gps-navigator-3d-style.html
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TOPIC: 1990 Nissan Sentra 1.6L 4speed - followup on stumble during
acceleration
http://groups.google.com/group/alt.autos.nissan/t/f9821d0c76287d5e?hl=en
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== 1 of 3 ==
Date: Sat, Feb 20 2010 1:19 pm
From: robbie
Had a problem with a stumble on acceleration, especially at WOT-
the car seemed like it was losing power, stumbling, low rpms, the car
just seemed like it wasn't getting fuel.
THEN, if you let off and gently accelerate the power is back,
everything is fine. This is repeatable ad infinitum
and is less apparent (sometimes doesnt happen) when the engine is cold
but always present at normal operating temps.
it has good fuel pressure, all 4 injectors work, the fuel pressure
regulator works properly,
the ECU shows 55 - no faults- same as it always does when i crawl
under the dash and check for error codes!
it was recommended to check/replace the engine temp sensor and/or O2
sensor.
For whatever reason, I want to blame the TPS so I tested it according
to the Haynes manual-
I followed the test procedure, and the manual claims it should read .5
-1volt at closed throttle, and 4-5volts at WOT-
well according to my meter MY TPS reads the opposite- at the closed
throttle it reads 4.3? volts and at WOT it
reads 1.1 volts. Have I found the likely culprit? Does the Haynes
manual have it wrong?
Thanks to all who take the time to read!
robbie
== 2 of 3 ==
Date: Sat, Feb 20 2010 5:32 pm
From: al
On Feb 20, 4:19 pm, robbie <robbie.h.wil...@gmail.com> wrote:
> Had a problem with a stumble on acceleration, especially at WOT-
>
> the car seemed like it was losing power, stumbling, low rpms, the car
> just seemed like it wasn't getting fuel.
>
> THEN, if you let off and gently accelerate the power is back,
> everything is fine. This is repeatable ad infinitum
> and is less apparent (sometimes doesnt happen) when the engine is cold
> but always present at normal operating temps.
>
> it has good fuel pressure, all 4 injectors work, the fuel pressure
> regulator works properly,
> the ECU shows 55 - no faults- same as it always does when i crawl
> under the dash and check for error codes!
>
> it was recommended to check/replace the engine temp sensor and/or O2
> sensor.
> For whatever reason, I want to blame the TPS so I tested it according
> to the Haynes manual-
> I followed the test procedure, and the manual claims it should read .5
> -1volt at closed throttle, and 4-5volts at WOT-
> well according to my meter MY TPS reads the opposite- at the closed
> throttle it reads 4.3? volts and at WOT it
> reads 1.1 volts. Have I found the likely culprit? Does the Haynes
> manual have it wrong?
>
> Thanks to all who take the time to read!
> robbie
The problem is clearly being caused by something that depends on
engine vacuum. When vacuum is low, the problem appears and then
disappears when vacuum is high. I'd check the EGR system. Too much
EGR will lean out the mixture on acceleration and cause stumbling and
hesitation. You can test this hypothesis by blocking the vacuum line
to the EGR valve thus disabling the EGR system. If the problem
disappears, you know it's the EGR system. Another characteristic of
EGR system trouble, is that the stumbling/hesitation will not happen
when the engine is cold and warming up but rather begins abruptly at a
very specific coolant temperature during warmup. That occurs because
the vacuum for the EGR system is supplied through a themostatically
controlled vacuum switching valve which only opens above a specific
coolant temperature. Good luck. Al
== 3 of 3 ==
Date: Sat, Feb 20 2010 8:40 pm
From: robbie
On Feb 20, 5:32 pm, al <abuo...@msn.com> wrote:
> On Feb 20, 4:19 pm, robbie <robbie.h.wil...@gmail.com> wrote:
>
>
>
> > Had a problem with a stumble on acceleration, especially at WOT-
>
> > the car seemed like it was losing power, stumbling, low rpms, the car
> > just seemed like it wasn't getting fuel.
>
> > THEN, if you let off and gently accelerate the power is back,
> > everything is fine. This is repeatable ad infinitum
> > and is less apparent (sometimes doesnt happen) when the engine is cold
> > but always present at normal operating temps.
>
> > it has good fuel pressure, all 4 injectors work, the fuel pressure
> > regulator works properly,
> > the ECU shows 55 - no faults- same as it always does when i crawl
> > under the dash and check for error codes!
>
> > it was recommended to check/replace the engine temp sensor and/or O2
> > sensor.
> > For whatever reason, I want to blame the TPS so I tested it according
> > to the Haynes manual-
> > I followed the test procedure, and the manual claims it should read .5
> > -1volt at closed throttle, and 4-5volts at WOT-
> > well according to my meter MY TPS reads the opposite- at the closed
> > throttle it reads 4.3? volts and at WOT it
> > reads 1.1 volts. Have I found the likely culprit? Does the Haynes
> > manual have it wrong?
>
> > Thanks to all who take the time to read!
> > robbie
>
> The problem is clearly being caused by something that depends on
> engine vacuum. When vacuum is low, the problem appears and then
> disappears when vacuum is high. I'd check the EGR system. Too much
> EGR will lean out the mixture on acceleration and cause stumbling and
> hesitation. You can test this hypothesis by blocking the vacuum line
> to the EGR valve thus disabling the EGR system. If the problem
> disappears, you know it's the EGR system. Another characteristic of
> EGR system trouble, is that the stumbling/hesitation will not happen
> when the engine is cold and warming up but rather begins abruptly at a
> very specific coolant temperature during warmup. That occurs because
> the vacuum for the EGR system is supplied through a themostatically
> controlled vacuum switching valve which only opens above a specific
> coolant temperature. Good luck. Al
Thanks for the advice. I will test this out using your theory and plug
the egr valve and giving it a test drive.
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