| Author |
Message |
Robert11
Guest
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 Posted:
Wed Nov 17, 2004 4:33 pm Post subject:
Inspection Of A Car With New Emission Sensor: Why 2 Weeks M |
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Hello:
My son has a '93 Toyota Corolla which just flunked the emission portion
of the Mass yearly inspection for a sticker.
Brought to a dealership who found a faulty sensor, and replaced it.
Presumably, it would pass now on a re-inspection at the local service
station.
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
Huh ?
If so, is the two weeks based on a true two weeks, or an estimate for the
number of
miles that has to be added, and his thinking that two weeks should probably
do it ?
Can't the cars computer be simply reset ?
Does the inspection computer really interface with the cars ?
Can someone please explain all of this; would be most appreciative.
The rep. couldn't explain it very well for my son; more or less a "just do
it" type
of explanation.
Thanks,
Bob
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Sleeker GT Phwoar
Guest
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| Posted:
Wed Nov 17, 2004 5:40 pm Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
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In article <tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com>, rgsxrose@comcast.net
says...
| Quote: | The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
You can reset the ECU, then it relearns your driving style of a number |
of miles/days/weeks.
I'm assuming it does this from the readings regarding sensors, as a
sensor has been replaced, it has to learn how to deal with new readings.
So two weeks sounds fair.
If you find you are getting good gas miles but lousy performance, or
lousy mileage but stunning performance but prefer to pootle along, you
can reset the ECU, allow it to learn your driving style and it will
behave more like you want.
--
"Sorry Sir, the meatballs are Orf"
The poster formerly known as Skodapilot.
http://www.bouncing-czechs.com |
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Ray O
Guest
|
| Posted:
Wed Nov 17, 2004 5:40 pm Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
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"Robert11" <rgsxrose@comcast.net> wrote in message
news:tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com...
| Quote: | Hello:
My son has a '93 Toyota Corolla which just flunked the emission portion
of the Mass yearly inspection for a sticker.
Brought to a dealership who found a faulty sensor, and replaced it.
Presumably, it would pass now on a re-inspection at the local service
station.
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
Huh ?
If so, is the two weeks based on a true two weeks, or an estimate for the
number of
miles that has to be added, and his thinking that two weeks should
probably
do it ?
Can't the cars computer be simply reset ?
Does the inspection computer really interface with the cars ?
Can someone please explain all of this; would be most appreciative.
The rep. couldn't explain it very well for my son; more or less a "just do
it" type
of explanation.
Thanks,
Bob
Check out the State of MA's RMV web sites for info. Here's a link to an faq |
page about the test and failing the test. In it, they suggest 1 week before
retest under certain conditions so it may be that the dealer was just giving
a cushion to make sure that the vehicle doesn't fail on the re-test, which
is free. You are entitled to 1 free re-test at the same inspection
location, and if it fails a second time, you'll have to re-pay the
inspection fee.
To answer your question, a car's computer can be "reset" but it's memory
would be empty without logging the vehicle's performance history.
--
Ray O
correct the return address punctuation to reply
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ma_twain
Guest
|
| Posted:
Thu Nov 18, 2004 12:55 am Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
|
Ray O wrote:
| Quote: | "Robert11" <rgsxrose@comcast.net> wrote in message
news:tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com...
Hello:
My son has a '93 Toyota Corolla which just flunked the emission portion
of the Mass yearly inspection for a sticker.
Brought to a dealership who found a faulty sensor, and replaced it.
Presumably, it would pass now on a re-inspection at the local service
station.
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
Huh ?
If so, is the two weeks based on a true two weeks, or an estimate for the
number of
miles that has to be added, and his thinking that two weeks should
probably
do it ?
Can't the cars computer be simply reset ?
Does the inspection computer really interface with the cars ?
Can someone please explain all of this; would be most appreciative.
The rep. couldn't explain it very well for my son; more or less a "just do
it" type
of explanation.
Thanks,
Bob
Check out the State of MA's RMV web sites for info. Here's a link to an faq
page about the test and failing the test. In it, they suggest 1 week before
retest under certain conditions so it may be that the dealer was just giving
a cushion to make sure that the vehicle doesn't fail on the re-test, which
is free. You are entitled to 1 free re-test at the same inspection
location, and if it fails a second time, you'll have to re-pay the
inspection fee.
To answer your question, a car's computer can be "reset" but it's memory
would be empty without logging the vehicle's performance history.
|
This is a 1993 model. What model year did this "computer inspection"
functionality start? I heard it was based on the OBDII(?) standard.
A company sells a "black box" you can hook up to the car's computer. It
will record things like maximum speed, distance driven etc. In other
words, a teenage driver's nightmare. It requires the ODBII interface. |
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Ray O
Guest
|
| Posted:
Thu Nov 18, 2004 1:18 am Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
|
"ma_twain" <ma_twain@yahoo.com> wrote in message
news:419BAC96.9090709@yahoo.com...
| Quote: | Ray O wrote:
"Robert11" <rgsxrose@comcast.net> wrote in message
news:tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com...
Hello:
My son has a '93 Toyota Corolla which just flunked the emission portion
of the Mass yearly inspection for a sticker.
Brought to a dealership who found a faulty sensor, and replaced it.
Presumably, it would pass now on a re-inspection at the local service
station.
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
Huh ?
If so, is the two weeks based on a true two weeks, or an estimate for the
number of
miles that has to be added, and his thinking that two weeks should
probably
do it ?
Can't the cars computer be simply reset ?
Does the inspection computer really interface with the cars ?
Can someone please explain all of this; would be most appreciative.
The rep. couldn't explain it very well for my son; more or less a "just
do
it" type
of explanation.
Thanks,
Bob
Check out the State of MA's RMV web sites for info. Here's a link to an
faq page about the test and failing the test. In it, they suggest 1 week
before retest under certain conditions so it may be that the dealer was
just giving a cushion to make sure that the vehicle doesn't fail on the
re-test, which is free. You are entitled to 1 free re-test at the same
inspection location, and if it fails a second time, you'll have to re-pay
the inspection fee.
To answer your question, a car's computer can be "reset" but it's memory
would be empty without logging the vehicle's performance history.
This is a 1993 model. What model year did this "computer inspection"
functionality start? I heard it was based on the OBDII(?) standard.
A company sells a "black box" you can hook up to the car's computer. It
will record things like maximum speed, distance driven etc. In other
words, a teenage driver's nightmare. It requires the ODBII interface.
|
On-Board Diagnostics II was phased in by manufacturers so the year that a
particular model became equipped with OBDII varies. A big advantage of OBD
II is that the interface is standardized so an OBD II diagnostic scanner
will work in any vehicle with OBD II diagnostics. This was not the case
with earlier on-board diagnostics, which were proprietary by make. With a
standard interface, independent repair facilities can now read trouble codes
on any make or model car, and emissions testing is easier, in some cases,
eliminating the tailpipe sniffer.
According to the State of MA's web page
http://vehicletest.state.ma.us/news.html testing procedures changed June 15,
2004 for some vehicles with OBD II.
--
Ray O
correct the return address punctuation to reply |
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HachiRoku
Guest
|
| Posted:
Thu Nov 18, 2004 5:40 am Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
|
On Wed, 17 Nov 2004 14:55:02 -0500, ma_twain wrote:
| Quote: | Ray O wrote:
"Robert11" <rgsxrose@comcast.net> wrote in message
news:tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com...
Hello:
My son has a '93 Toyota Corolla which just flunked the emission portion
of the Mass yearly inspection for a sticker.
Brought to a dealership who found a faulty sensor, and replaced it.
Presumably, it would pass now on a re-inspection at the local service
station.
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
Huh ?
If so, is the two weeks based on a true two weeks, or an estimate for the
number of
miles that has to be added, and his thinking that two weeks should
probably
do it ?
Can't the cars computer be simply reset ?
Does the inspection computer really interface with the cars ?
Can someone please explain all of this; would be most appreciative.
The rep. couldn't explain it very well for my son; more or less a "just do
it" type
of explanation.
Thanks,
Bob
Check out the State of MA's RMV web sites for info. Here's a link to an faq
page about the test and failing the test. In it, they suggest 1 week before
retest under certain conditions so it may be that the dealer was just giving
a cushion to make sure that the vehicle doesn't fail on the re-test, which
is free. You are entitled to 1 free re-test at the same inspection
location, and if it fails a second time, you'll have to re-pay the
inspection fee.
To answer your question, a car's computer can be "reset" but it's memory
would be empty without logging the vehicle's performance history.
This is a 1993 model. What model year did this "computer inspection"
functionality start? I heard it was based on the OBDII(?) standard.
|
OBDII was a 1996 mandate. My 95 Tercel had it, but since it was prior to
1996 it was tested the good old fashioned way...by beating the piss out of
it on the dynamometer! (Good thing, because I had something setting the
MIL and would clear it by disconnecting the computer every two days...)
| Quote: |
A company sells a "black box" you can hook up to the car's computer. It
will record things like maximum speed, distance driven etc. In other
words, a teenage driver's nightmare. It requires the ODBII interface. |
|
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| Back to top |
|
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HachiRoku
Guest
|
| Posted:
Thu Nov 18, 2004 5:40 am Post subject:
Re: Inspection Of A Car With New Emission Sensor: Why 2 Wee |
|
|
On Wed, 17 Nov 2004 13:22:29 +0000, Sleeker GT Phwoar wrote:
| Quote: | In article <tNCdnfrTJ-AhqwbcRVn-oQ@comcast.com>, rgsxrose@comcast.net
says...
The service rep. at the dealership told him not to bring it in for two
weeks, at least, as
the car needs this two weeks to "re-set" its computer, and the inspection
computer
talks to the cars computer, and if not reset would not detect the new
sensor, etc.
You can reset the ECU, then it relearns your driving style of a number
of miles/days/weeks.
I'm assuming it does this from the readings regarding sensors, as a
sensor has been replaced, it has to learn how to deal with new readings.
So two weeks sounds fair.
If you find you are getting good gas miles but lousy performance, or
lousy mileage but stunning performance but prefer to pootle along, you
can reset the ECU, allow it to learn your driving style and it will
behave more like you want.
|
They also want it to run a certain number of driving cycles, to make sure
the MIL stays clear, and for the reasons you mentioned above. |
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