legacycentral bbs

My MY92 Legacy RS hesitates on both light throttle pressure and WOT
when building up boost. I yesterday tried to remove the air-box just
to test if it might be cause there isn't enough air, but no, the same
goddam hesitation's still there.
Then I did the same as a week ago, I reset the ECU and now the car
pulls quite steadily again. I just suspect that the same hesitation
will return in a few days, just like it did before... any ideas,
could it be the plugs, I've done 30.000kms with them, but then, why
would they work ok after resetting the ECU? The plugs are quite
expensive, so I wouldn't like changing them before having at least an
idea the problem might be caused by them, besides, it's quite a job
to change them also.

Another thing, is it normal that the intake is slightly wet even as
far as the AFM and actual filter? I still have a stock intake setup
(even stock filter) and currently running ~1.2bar boost...

Comments appreciated !

* Miki *


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Did you check the fault diagnosis to see if there were any intermitent
faults?
Filter wet? This could be a problem, how did this happen? Never seen
moisture in this area ever. I have the resonator box under the gaurd removed
and just a piece of 3" pvc feeding into the OEM filter box with std air
filter. The titanium tipped spark plugs should do 100,000km with out
problems. My old twin cam corolla had these, at 100,00km i replaced them,
they looked like new.
Regards, Rod.
----- Original Message -----
From: "Miki" <awdturbodude@yahoo.com>
To: <BC-BFLegacyWorks@yahoogroups.com>
Sent: Tuesday, July 10, 2001 8:18 PM
Subject: [BC-BFLegacyWorks] Hesitating Legacy RS


> My MY92 Legacy RS hesitates on both light throttle pressure and WOT
> when building up boost. I yesterday tried to remove the air-box just
> to test if it might be cause there isn't enough air, but no, the same
> goddam hesitation's still there.
> Then I did the same as a week ago, I reset the ECU and now the car
> pulls quite steadily again. I just suspect that the same hesitation
> will return in a few days, just like it did before... any ideas,
> could it be the plugs, I've done 30.000kms with them, but then, why
> would they work ok after resetting the ECU? The plugs are quite
> expensive, so I wouldn't like changing them before having at least an
> idea the problem might be caused by them, besides, it's quite a job
> to change them also.
>
> Another thing, is it normal that the intake is slightly wet even as
> far as the AFM and actual filter? I still have a stock intake setup
> (even stock filter) and currently running ~1.2bar boost...
>
> Comments appreciated !
>
> * Miki *
>
>
> To unsubscribe from this group, please send an email to:
> BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>
>
>


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Rod,

the moisture is coming from the engine, it's not water or such, the
filter is completely dry on the "air-side". Anyway it's wrong to
use "wet" here, the filter is not wet, it's just sort of ....
moist... perhaps not even on the filter, but there's some kinda moist
on the inside of the tube from the filter onward... don't know how to
describe it better. I'm just wondering if I should be worried the
darn thing could catch fire some sunny day, cause I'm assuming it's
fuel.

Regarding the plugs, that's what I figured as well, there shouldn't
be anything wrong with them yet, I guess the same goes with the
actual leads, since the car works fine after a ECU rest, they should
be ok as well... maybe...

I'll have to check for possible error codes if it starts hesitating
again, but there's at least no check engine light warnings so far.

* Miki *


--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> Did you check the fault diagnosis to see if there were any
> intermitent faults?
> Filter wet? This could be a problem, how did this happen? Never
> seen moisture in this area ever. I have the resonator box under
> the gaurd removed and just a piece of 3" pvc feeding into the OEM
> filter box with std air filter. The titanium tipped spark plugs
> should do 100,000km with out problems. My old twin cam corolla had
> these, at 100,00km i replaced them, they looked like new.
> Regards, Rod.



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Hey Miki,
I have to ask, you have changed the sparkplug wires in the last 5 years or
do right??
Mark

At 10:40 AM 07/10/2001 +0000, you wrote:
>Rod,
>
>the moisture is coming from the engine, it's not water or such, the
>filter is completely dry on the "air-side". Anyway it's wrong to
>use "wet" here, the filter is not wet, it's just sort of ....
>moist... perhaps not even on the filter, but there's some kinda moist
>on the inside of the tube from the filter onward... don't know how to
>describe it better. I'm just wondering if I should be worried the
>darn thing could catch fire some sunny day, cause I'm assuming it's
>fuel.
>
>Regarding the plugs, that's what I figured as well, there shouldn't
>be anything wrong with them yet, I guess the same goes with the
>actual leads, since the car works fine after a ECU rest, they should
>be ok as well... maybe...
>
>I'll have to check for possible error codes if it starts hesitating
>again, but there's at least no check engine light warnings so far.
>
>* Miki *
>
>
>--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> > Did you check the fault diagnosis to see if there were any
> > intermitent faults?
> > Filter wet? This could be a problem, how did this happen? Never
> > seen moisture in this area ever. I have the resonator box under
> > the gaurd removed and just a piece of 3" pvc feeding into the OEM
> > filter box with std air filter. The titanium tipped spark plugs
> > should do 100,000km with out problems. My old twin cam corolla had
> > these, at 100,00km i replaced them, they looked like new.
> > Regards, Rod.
>
>
>
>To unsubscribe from this group, please send an email to:
>BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>


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At 10:18 AM 10/07/2001 +0000, you wrote:
>My MY92 Legacy RS hesitates on both light throttle pressure and WOT
>when building up boost. I yesterday tried to remove the air-box just
>to test if it might be cause there isn't enough air, but no, the same
>goddam hesitation's still there.
>Then I did the same as a week ago, I reset the ECU and now the car
>pulls quite steadily again. I just suspect that the same hesitation
>will return in a few days, just like it did before... any ideas,
>could it be the plugs, I've done 30.000kms with them, but then, why
>would they work ok after resetting the ECU? The plugs are quite
>expensive, so I wouldn't like changing them before having at least an
>idea the problem might be caused by them, besides, it's quite a job
>to change them also.
>
>Another thing, is it normal that the intake is slightly wet even as
>far as the AFM and actual filter? I still have a stock intake setup
>(even stock filter) and currently running ~1.2bar boost...
>
>Comments appreciated !

I replace my plugs every 16,000km, sometimes even less, because
the turbos have a nasty habit of fouling them. The hesitation you're
experiencing is most likely the knock sensor.

The sensor is detecting a small ping or knock, it retards the
timing a bit (hesitation), and the ECU decides that rather than risking
self-immolation to use a slightly retarded timing map from that point
on. Resetting the ECU puts it back in 'learning' mode, where it's full
balls-out until the next ping or knock.

Make sense?

-=[Matt]=-


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--- In BC-BFLegacyWorks@y..., Mark Ward <mark@r...> wrote:
> Hey Miki,
> I have to ask, you have changed the sparkplug wires in the last 5
> years or do right??
> Mark

Oops... never changed them... still going with the original ones...

--- In BC-BFLegacyWorks@y..., jonesboy@s... wrote:
> I replace my plugs every 16,000km, sometimes even less, because
> the turbos have a nasty habit of fouling them. The hesitation
> you're experiencing is most likely the knock sensor.
>
> The sensor is detecting a small ping or knock, it retards the
> timing a bit (hesitation), and the ECU decides that rather than
> risking self-immolation to use a slightly retarded timing map from
> that point on. Resetting the ECU puts it back in 'learning' mode,
> where it's full balls-out until the next ping or knock.
>
> Make sense?

Yes it makes sense, and explains why resetting the ECU cures the
problem, but just momentarily. I think I'll have to get a new sensor,
new plugs, and...hmm... better get them wires replaced also....

* Miki *


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if the sensor was playing up, it should be stored in the fault diagnosis as
a intermitent fault, you think.....
If it is picking up 'knocking' why?....possibly bad fuel......
Rod
----- Original Message -----
From: "Miki" <awdturbodude@yahoo.com>
To: <BC-BFLegacyWorks@yahoogroups.com>
Sent: Wednesday, July 11, 2001 4:38 PM
Subject: [BC-BFLegacyWorks] Re: Hesitating Legacy RS


> --- In BC-BFLegacyWorks@y..., Mark Ward <mark@r...> wrote:
> > Hey Miki,
> > I have to ask, you have changed the sparkplug wires in the last 5
> > years or do right??
> > Mark
>
> Oops... never changed them... still going with the original ones...
>
> --- In BC-BFLegacyWorks@y..., jonesboy@s... wrote:
> > I replace my plugs every 16,000km, sometimes even less, because
> > the turbos have a nasty habit of fouling them. The hesitation
> > you're experiencing is most likely the knock sensor.
> >
> > The sensor is detecting a small ping or knock, it retards the
> > timing a bit (hesitation), and the ECU decides that rather than
> > risking self-immolation to use a slightly retarded timing map from
> > that point on. Resetting the ECU puts it back in 'learning' mode,
> > where it's full balls-out until the next ping or knock.
> >
> > Make sense?
>
> Yes it makes sense, and explains why resetting the ECU cures the
> problem, but just momentarily. I think I'll have to get a new sensor,
> new plugs, and...hmm... better get them wires replaced also....
>
> * Miki *
>
>
> To unsubscribe from this group, please send an email to:
> BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>
>
>


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--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> if the sensor was playing up, it should be stored in the fault
> diagnosis as a intermitent fault, you think.....
> If it is picking up 'knocking' why?....possibly bad fuel......
> Rod

Can there be any other reasons for knocking than bad fuel, cause that
shouldn't be the case here... neither too low octane, I'm running
98...

* Miki *



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The car really isn't knocking, the sensor and or the ECU is too sensitive,
so it thinks normal engine noise is an engine knock, and retards timing.

************************************
Josh Colombo
jcc189@psu.edu <mailto:jcc189@psu.edu>

"Life, an ever-changing melody
of beats and rhythm" - ME
************************************




-----Original Message-----
From: Miki [mailto:awdturbodude@yahoo.com]
Sent: Wednesday, July 11, 2001 4:22 AM
To: BC-BFLegacyWorks@yahoogroups.com
Subject: [BC-BFLegacyWorks] Re: Hesitating Legacy RS


--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> if the sensor was playing up, it should be stored in the fault
> diagnosis as a intermitent fault, you think.....
> If it is picking up 'knocking' why?....possibly bad fuel......
> Rod

Can there be any other reasons for knocking than bad fuel, cause that
shouldn't be the case here... neither too low octane, I'm running
98...

* Miki *



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BC-BFLegacyWorks-unsubscribe@egroups.com








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This happened to me, I replaced the wires and it went away...
Mark


At 12:14 PM 07/11/2001 -0400, you wrote:
>The car really isn't knocking, the sensor and or the ECU is too sensitive,
>so it thinks normal engine noise is an engine knock, and retards timing.
>
>************************************
>Josh Colombo
>jcc189@psu.edu <mailto:jcc189@psu.edu>
>
>"Life, an ever-changing melody
> of beats and rhythm" - ME
>************************************
>
>
>
>
>-----Original Message-----
>From: Miki [mailto:awdturbodude@yahoo.com]
>Sent: Wednesday, July 11, 2001 4:22 AM
>To: BC-BFLegacyWorks@yahoogroups.com
>Subject: [BC-BFLegacyWorks] Re: Hesitating Legacy RS
>
>
>--- In BC-BFLegacyWorks@y..., "Rod" <melrod@o...> wrote:
> > if the sensor was playing up, it should be stored in the fault
> > diagnosis as a intermitent fault, you think.....
> > If it is picking up 'knocking' why?....possibly bad fuel......
> > Rod
>
>Can there be any other reasons for knocking than bad fuel, cause that
>shouldn't be the case here... neither too low octane, I'm running
>98...
>
>* Miki *
>
>
>
>To unsubscribe from this group, please send an email to:
>BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>
>
>
>
>
>To unsubscribe from this group, please send an email to:
>BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>


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--- In BC-BFLegacyWorks@y..., Mark Ward <mark@r...> wrote:
> This happened to me, I replaced the wires and it went away...
> Mark
>

Sounds promising Mark, what wires did you replace with, original
Subaru??? Josh recommended Magnecore wires... any ideas on the cost???

* Miki *


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Megnecore run I think $75 something like that US Dollar. They have a
lifetime guarantee on the wires. Dave has them too, and likes them.

************************************
Josh Colombo
jcc189@psu.edu <mailto:jcc189@psu.edu>

"Life, an ever-changing melody
of beats and rhythm" - ME
************************************




-----Original Message-----
From: Miki [mailto:awdturbodude@yahoo.com]
Sent: Wednesday, July 11, 2001 3:19 PM
To: BC-BFLegacyWorks@yahoogroups.com
Subject: [BC-BFLegacyWorks] Re: Hesitating Legacy RS


--- In BC-BFLegacyWorks@y..., Mark Ward <mark@r...> wrote:
> This happened to me, I replaced the wires and it went away...
> Mark
>

Sounds promising Mark, what wires did you replace with, original
Subaru??? Josh recommended Magnecore wires... any ideas on the cost???

* Miki *


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I used NGK Blue, they work very well. They cost me about $60 cdn
Mark

At 07:19 PM 07/11/2001 +0000, you wrote:
>--- In BC-BFLegacyWorks@y..., Mark Ward <mark@r...> wrote:
> > This happened to me, I replaced the wires and it went away...
> > Mark
> >
>
>Sounds promising Mark, what wires did you replace with, original
>Subaru??? Josh recommended Magnecore wires... any ideas on the cost???
>
>* Miki *
>
>
>To unsubscribe from this group, please send an email to:
>BC-BFLegacyWorks-unsubscribe@egroups.com
>
>
>
>


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