Re: OBD-II/CAN Reader at Costco stores for $35.

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Old 11 Sep 2009, 10:21 pm   #1 (permalink)
Built_Well
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

Hachiroku wrote:

> SMS wrote:
>
>> This one
>> "http://www.amazon.com/CodeKey-Engine-Diagnostic-Tool-Board/dp/B0025ZHF9W"
>>
>> Not the greatest reader, you have to look up the code number on-line
>> after you scan at "http://codekeyunlock.com/"

> ========
>
> Not bad for $50.
> However, I have always been a little leery of DIY code readers, and even
> $700 ones like Snap-On and Fluke as well.
>
> The code reader from Toyota reads Toyota codes and interprets them. It
> also is set up to work with your car. Now, most OBD systems are supposed
> to use the same interface, and similar codes, but considering the ECU is a
> minimum $800 box, I'm always leery of plugging something into it that may
> be incompatible.
>
> Esp if it says "Made in China" on the package...

==========

Hachi (or anyone else), what do you think of the ScanGauge II
( www.ScanGauge.com )? Most folks keep the ScanGauge 2 plugged into their
car's OBD port 24/7 for months at a time. Problem?

I think this would be the OBD toy I'd buy if I were to buy an OBDII toy.


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Old 11 Sep 2009, 10:55 pm   #2 (permalink)
Hachiroku ハチロク
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

On Fri, 11 Sep 2009 22:21:07 -0500, Built_Well wrote:

> Hachiroku wrote:
>
>> SMS wrote:
>>
>>> This one
>>> "http://www.amazon.com/CodeKey-Engine-Diagnostic-Tool-Board/dp/B0025ZHF9W"
>>>
>>> Not the greatest reader, you have to look up the code number on-line
>>> after you scan at "http://codekeyunlock.com/"

>> ========
>>
>> Not bad for $50.
>> However, I have always been a little leery of DIY code readers, and even
>> $700 ones like Snap-On and Fluke as well.
>>
>> The code reader from Toyota reads Toyota codes and interprets them. It
>> also is set up to work with your car. Now, most OBD systems are supposed
>> to use the same interface, and similar codes, but considering the ECU is
>> a minimum $800 box, I'm always leery of plugging something into it that
>> may be incompatible.
>>
>> Esp if it says "Made in China" on the package...

> ==========
>
> Hachi (or anyone else), what do you think of the ScanGauge II (
> www.ScanGauge.com )? Most folks keep the ScanGauge 2 plugged into their
> car's OBD port 24/7 for months at a time. Problem?
>
> I think this would be the OBD toy I'd buy if I were to buy an OBDII toy.


I have heard of them but have no experience with it.

I knew a guy that had one mounted to his dash. He liked it.


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Old 12 Sep 2009, 12:49 am   #3 (permalink)
Ray O
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Default Re: OBD-II/CAN Reader at Costco stores for $35.


"Built_Well" <Built_Well_Toyota@hotmail.com> wrote in message
news:4aab1393$0$77548$892e0abb@auth.newsreader.oct anews.com...
> Hachiroku wrote:
>
>> SMS wrote:
>>
>>> This one
>>> "http://www.amazon.com/CodeKey-Engine-Diagnostic-Tool-Board/dp/B0025ZHF9W"
>>>
>>> Not the greatest reader, you have to look up the code number on-line
>>> after you scan at "http://codekeyunlock.com/"

>> ========
>>
>> Not bad for $50.
>> However, I have always been a little leery of DIY code readers, and even
>> $700 ones like Snap-On and Fluke as well.
>>
>> The code reader from Toyota reads Toyota codes and interprets them. It
>> also is set up to work with your car. Now, most OBD systems are supposed
>> to use the same interface, and similar codes, but considering the ECU is
>> a
>> minimum $800 box, I'm always leery of plugging something into it that may
>> be incompatible.
>>
>> Esp if it says "Made in China" on the package...

> ==========
>
> Hachi (or anyone else), what do you think of the ScanGauge II
> ( www.ScanGauge.com )? Most folks keep the ScanGauge 2 plugged into their
> car's OBD port 24/7 for months at a time. Problem?
>
> I think this would be the OBD toy I'd buy if I were to buy an OBDII toy.
>

If the ScanGauge II gives actual sensor voltages and frequencies, then it is
worth the money. I'm not that interested in all of the other stuff the unit
displays, but it might be worth it for someone who is.

No problem leaving it plugged into the OBD II port unless you leave the
vehicle parked for long periods, where it will probably drain the battery
more quickly.
--

Ray O
(correct punctuation to reply)


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Old 12 Sep 2009, 04:05 am   #4 (permalink)
nm5k@wt.net
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

On Sep 12, 12:49*am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
wrote:

>
> If the ScanGauge II gives actual sensor voltages and frequencies, then itis
> worth the money. *I'm not that interested in all of the other stuff theunit
> displays, but it might be worth it for someone who is.
>
> No problem leaving it plugged into the OBD II port unless you leave the
> vehicle parked for long periods, where it will probably drain the battery
> more quickly.
> --
>
> Ray O
> (correct punctuation to reply)


I'd like to know how they are calculating mpg just from ECU data.
Makes me wonder how it can tell the mileage difference from say a
41 mpg Corolla, and a 27 mpg Chevy Impala for instance..
"actual real life ratings, I've driven both".
The Impala had that mpg indicator built into the car on the headliner
display.
Seems to me you would have to calibrate the thing according
to miles driven, and gallons of gas burned. They seem to let
you input gas data.
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Old 12 Sep 2009, 10:38 am   #5 (permalink)
Hachiroku ハチロク
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

On Sat, 12 Sep 2009 02:05:50 -0700, nm5k wrote:

> On Sep 12, 12:49*am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
> wrote:
>
>
>> If the ScanGauge II gives actual sensor voltages and frequencies, then
>> it is worth the money. *I'm not that interested in all of the other
>> stuff the unit displays, but it might be worth it for someone who is.
>>
>> No problem leaving it plugged into the OBD II port unless you leave the
>> vehicle parked for long periods, where it will probably drain the
>> battery more quickly.
>> --
>>
>> Ray O
>> (correct punctuation to reply)

>
> I'd like to know how they are calculating mpg just from ECU data. Makes me
> wonder how it can tell the mileage difference from say a 41 mpg Corolla,
> and a 27 mpg Chevy Impala for instance.. "actual real life ratings, I've
> driven both". The Impala had that mpg indicator built into the car on the
> headliner display.
> Seems to me you would have to calibrate the thing according to miles
> driven, and gallons of gas burned. They seem to let you input gas data.



The ECU now controls everything; the speedo, the odo, everything.
It would be a simple calculation from the data to figure fuel economy.

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Old 12 Sep 2009, 01:39 pm   #6 (permalink)
Jeff
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

On Sep 12, 11:38 am, Hachiroku ハチロク <Tru...@e86.GTS> wrote:
> On Sat, 12 Sep 2009 02:05:50 -0700, nm5k wrote:
> > On Sep 12, 12:49 am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
> > wrote:

>
> >> If the ScanGauge II gives actual sensor voltages and frequencies, then
> >> it is worth the money. I'm not that interested in all of the other
> >> stuff the unit displays, but it might be worth it for someone who is.

>
> >> No problem leaving it plugged into the OBD II port unless you leave the
> >> vehicle parked for long periods, where it will probably drain the
> >> battery more quickly.
> >> --

>
> >> Ray O
> >> (correct punctuation to reply)

>
> > I'd like to know how they are calculating mpg just from ECU data. Makes me
> > wonder how it can tell the mileage difference from say a 41 mpg Corolla,
> > and a 27 mpg Chevy Impala for instance.. "actual real life ratings, I've
> > driven both". The Impala had that mpg indicator built into the car on the
> > headliner display.
> > Seems to me you would have to calibrate the thing according to miles
> > driven, and gallons of gas burned. They seem to let you input gas data.

>
> The ECU now controls everything; the speedo, the odo, everything.
> It would be a simple calculation from the data to figure fuel economy.


In addition, the car must have some way to determine how many gallons
of fuel (or more likely, how many pounds of fuel) are left in the
tank. Otherwise, the car's computer would not be able to estimate how
far the car can go until the tank is empty. It can use this and the
miles driven to determine average mileage.

Jeff
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Old 12 Sep 2009, 02:00 pm   #7 (permalink)
Jeff Strickland
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Default Re: OBD-II/CAN Reader at Costco stores for $35.


"Jeff" <jeff.utz@gmail.com> wrote in message
news:e0d50489-4e53-4da9-b5a0-75b26a21dd26@w10g2000yqf.googlegroups.com...
> On Sep 12, 11:38 am, Hachiroku ハチロク <Tru...@e86.GTS> wrote:
>> On Sat, 12 Sep 2009 02:05:50 -0700, nm5k wrote:
>> > On Sep 12, 12:49 am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
>> > wrote:

>>
>> >> If the ScanGauge II gives actual sensor voltages and frequencies, then
>> >> it is worth the money. I'm not that interested in all of the other
>> >> stuff the unit displays, but it might be worth it for someone who is.

>>
>> >> No problem leaving it plugged into the OBD II port unless you leave
>> >> the
>> >> vehicle parked for long periods, where it will probably drain the
>> >> battery more quickly.
>> >> --

>>
>> >> Ray O
>> >> (correct punctuation to reply)

>>
>> > I'd like to know how they are calculating mpg just from ECU data. Makes
>> > me
>> > wonder how it can tell the mileage difference from say a 41 mpg
>> > Corolla,
>> > and a 27 mpg Chevy Impala for instance.. "actual real life ratings,
>> > I've
>> > driven both". The Impala had that mpg indicator built into the car on
>> > the
>> > headliner display.
>> > Seems to me you would have to calibrate the thing according to miles
>> > driven, and gallons of gas burned. They seem to let you input gas data.

>>
>> The ECU now controls everything; the speedo, the odo, everything.
>> It would be a simple calculation from the data to figure fuel economy.

>
> In addition, the car must have some way to determine how many gallons
> of fuel (or more likely, how many pounds of fuel) are left in the
> tank. Otherwise, the car's computer would not be able to estimate how
> far the car can go until the tank is empty. It can use this and the
> miles driven to determine average mileage.
>
> Jeff



Say what?

The ECU keeps a running calculation of the current consumption, then it
calculates the average over time or miles. Since the ECU knows how far it
has gone, and how much gas it is using and has used, then it knows the
current fuel consumption rate and the average consumption rate.









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Old 12 Sep 2009, 02:44 pm   #8 (permalink)
dsi1
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

nm5k@wt.net wrote:
> On Sep 12, 12:49 am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
> wrote:
>
>> If the ScanGauge II gives actual sensor voltages and frequencies, then it is
>> worth the money. I'm not that interested in all of the other stuff the unit
>> displays, but it might be worth it for someone who is.
>>
>> No problem leaving it plugged into the OBD II port unless you leave the
>> vehicle parked for long periods, where it will probably drain the battery
>> more quickly.
>> --
>>
>> Ray O
>> (correct punctuation to reply)

>
> I'd like to know how they are calculating mpg just from ECU data.
> Makes me wonder how it can tell the mileage difference from say a
> 41 mpg Corolla, and a 27 mpg Chevy Impala for instance..
> "actual real life ratings, I've driven both".
> The Impala had that mpg indicator built into the car on the headliner
> display.
> Seems to me you would have to calibrate the thing according
> to miles driven, and gallons of gas burned. They seem to let
> you input gas data.


It's pretty easy to calculate MPG if you know fuel consumption and
distance traveled. I'm not sure how they calculate distance traveled but
this can be done through tire rotations or by speed x time. My
father-in-law's old Servile gave MPG figures as an instantaneous value
which maxed out at 70 MPG when going downhill or as a cumulative value
which went up to around 15 MPG on trips of more than 12 miles. I just
made shorts trips so my average was about 11 or 12 MPG. The cumulative
MPG could be reset much like a tripometer.

There's all kinds of neat information available at the ECU port, I can
read all that on my dinky cheap reader but that has a dopey small
display. I wish there was a big readout multi-function display made
especially for systems monitoring while driving. A great thing is that
the hook-up would be pretty much a snap - not the case with a standard
after market gauge set.

MPG figures and absolute manifold pressure and would be great to know as
well as the standard coolant temperature and oil pressure etc.




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Old 12 Sep 2009, 03:41 pm   #9 (permalink)
Jeff Strickland
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Default Re: OBD-II/CAN Reader at Costco stores for $35.


<nm5k@wt.net> wrote in message
news:d5f1d55b-70da-458c-8661-eb41ed03494d@l35g2000pra.googlegroups.com...
On Sep 12, 12:49 am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
wrote:

>
> If the ScanGauge II gives actual sensor voltages and frequencies, then it
> is
> worth the money. I'm not that interested in all of the other stuff the
> unit
> displays, but it might be worth it for someone who is.
>
> No problem leaving it plugged into the OBD II port unless you leave the
> vehicle parked for long periods, where it will probably drain the battery
> more quickly.
> --
>
> Ray O
> (correct punctuation to reply)


I'd like to know how they are calculating mpg just from ECU data.
Makes me wonder how it can tell the mileage difference from say a
41 mpg Corolla, and a 27 mpg Chevy Impala for instance..
"actual real life ratings, I've driven both".
The Impala had that mpg indicator built into the car on the headliner
display.
Seems to me you would have to calibrate the thing according
to miles driven, and gallons of gas burned. They seem to let
you input gas data.


<JS>
It's an easy matter to calculate the Injector ON time and the number of ON
Cycles to arrive at how much fuel is in demand. The ECU knows how far the
tires have gone, so figuring out how much gas was used to go how far is
pretty easy.



</JS>




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Old 12 Sep 2009, 10:59 pm   #10 (permalink)
Steve Walker
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Default Re: OBD-II/CAN Reader at Costco stores for $35.

Jeff Strickland wrote:
> <nm5k@wt.net> wrote in message
> news:d5f1d55b-70da-458c-8661-eb41ed03494d@l35g2000pra.googlegroups.com...
> On Sep 12, 12:49 am, "Ray O" <rokig...@NOSPAMtristarassociates.com>
> wrote:
>
>> If the ScanGauge II gives actual sensor voltages and frequencies, then it
>> is
>> worth the money. I'm not that interested in all of the other stuff the
>> unit
>> displays, but it might be worth it for someone who is.
>>
>> No problem leaving it plugged into the OBD II port unless you leave the
>> vehicle parked for long periods, where it will probably drain the battery
>> more quickly.
>> --
>>
>> Ray O
>> (correct punctuation to reply)

>
> I'd like to know how they are calculating mpg just from ECU data.
> Makes me wonder how it can tell the mileage difference from say a
> 41 mpg Corolla, and a 27 mpg Chevy Impala for instance..
> "actual real life ratings, I've driven both".
> The Impala had that mpg indicator built into the car on the headliner
> display.
> Seems to me you would have to calibrate the thing according
> to miles driven, and gallons of gas burned. They seem to let
> you input gas data.
>
>
> <JS>
> It's an easy matter to calculate the Injector ON time and the number of ON
> Cycles to arrive at how much fuel is in demand. The ECU knows how far the
> tires have gone, so figuring out how much gas was used to go how far is
> pretty easy.
>
>
>
> </JS>
>
>
>
>


Possibly for the factory computer. Not easily done with a scanner. Too
many vehicle variables, injector flow rate, fuel system pressure,
increasing on time linearly DOES NOT generate a linear fuel flow curve.



--
Steve Walker
Fusion640@verizonwallet.com (remove wallet to reply)
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