Misfires
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
First you purchase something like this.
Then you purchase and install Torque Pro
Then you connect to the Bluetooth adapter and start playing around
Then you purchase and install Torque Pro
Then you connect to the Bluetooth adapter and start playing around
Thread Starter
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
Advanced
Joined: Apr 2015
Posts: 84
Likes: 3
No true, you really need to see misfire counts per cylinder, the CEL doesn't come on till you get a certain number of misfires in a set time period (forget what the number is exactly). All cylinders get misfires from time to time, it's excessive misfires that's a problem.
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,441
Likes: 2,186
From: Buffalo Texas
No true, you really need to see misfire counts per cylinder, the CEL doesn't come on till you get a certain number of misfires in a set time period (forget what the number is exactly). All cylinders get misfires from time to time, it's excessive misfires that's a problem.
Instructor
Joined: May 2015
Posts: 115
Likes: 2
From: houston tx
MISFIRE??? .... really?
any1 here knows about mode 6 on OBD2 ???
any1 here heard of tech2 scanner?
how bout freeze frame?
I bet if the shop charge a customer pulling and putting new plugs and cables by trying to solve a misfire issue most of you would not agree to pay for the parts and labor ....---> agree?
any1 here heard of tech2 scanner?
how bout freeze frame?
I bet if the shop charge a customer pulling and putting new plugs and cables by trying to solve a misfire issue most of you would not agree to pay for the parts and labor ....---> agree?
Thread Starter
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
any1 here knows about mode 6 on OBD2 ???
any1 here heard of tech2 scanner?
how bout freeze frame?
I bet if the shop charge a customer pulling and putting new plugs and cables by trying to solve a misfire issue most of you would not agree to pay for the parts and labor ....---> agree?
any1 here heard of tech2 scanner?
how bout freeze frame?
I bet if the shop charge a customer pulling and putting new plugs and cables by trying to solve a misfire issue most of you would not agree to pay for the parts and labor ....---> agree?
I don't understand. Please speak English.
Instructor
Joined: May 2015
Posts: 115
Likes: 2
From: houston tx
in english ..
obd2 is the system ur car currently running mandated by EPA and install on all production cars 96' and newer...
mode 6 is the original records of a misfire or any diagnostic code before it reach threshold to generate a trouble code and store in ur ECM memory
tech2 is the factory scanner to all gm cars except global version
google the terms ...they are technical auto repair acronyms and they are in English
all of the above items is normally what a professional auto tech use to identify and diagnose misfire on GM ....
mode 6 is the original records of a misfire or any diagnostic code before it reach threshold to generate a trouble code and store in ur ECM memory
tech2 is the factory scanner to all gm cars except global version
google the terms ...they are technical auto repair acronyms and they are in English
all of the above items is normally what a professional auto tech use to identify and diagnose misfire on GM ....
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Instructor
Joined: May 2015
Posts: 115
Likes: 2
From: houston tx
1 more...
freeze are defined by the moment from 0-7 sec later after ur compter considered a misfire which it automatically generate a trouble code and it store some operate parameters conditions such as temp,rpm,vehicle speed...blah blah blah.....
that's is the date which a real mechanic needs to diagnose causes of
misfiring....its scientific not guessing
google the terms and u will know what I am talking about
Thread Starter
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
Did you even read the thread?
I've been using an OBD2 scanner to read my misfires. I have random misfires on all cylinders and quite a few more on cylinder 6.
Knowing that I have a problem with cylinder 6 doesn't tell me what the problem is. Swapping wires, plugs and then coils is an easy way to determine if the problem is the wire, plug, or coil. A Tech 2 can't tell you if the problem is the wire, just which cylinder it is.
Slow down, read the thread you're replying to, and use proper spelling and punctuation when you reply and people will take you more seriously.
I've been using an OBD2 scanner to read my misfires. I have random misfires on all cylinders and quite a few more on cylinder 6.
Knowing that I have a problem with cylinder 6 doesn't tell me what the problem is. Swapping wires, plugs and then coils is an easy way to determine if the problem is the wire, plug, or coil. A Tech 2 can't tell you if the problem is the wire, just which cylinder it is.
Slow down, read the thread you're replying to, and use proper spelling and punctuation when you reply and people will take you more seriously.
Instructor
Joined: May 2015
Posts: 115
Likes: 2
From: houston tx
read the post again
[QUOTE=Trios;1589694844]Did you even read the thread?
I've been using an OBD2 scanner to read my misfires. I have random misfires on all cylinders and quite a few more on cylinder 6.
Knowing that I have a problem with cylinder 6 doesn't tell me what the problem is. Swapping wires, plugs and then coils is an easy way to determine if the problem is the wire, plug, or coil. A Tech 2 can't tell you if the problem is the wire, just which cylinder it is.
Slow down, read the thread you're replying to, and use proper spelling and punctuation when you reply and people will take you more seriously.[/QUOTE
I did read it very careful....u mentioned p0300 which is random misfire happened previous to this time....
that is why I suggest using mode 6 on OBD2 to look at the true offender
freeze frame help to determine what condition when symptoms happended that's what Chevrolet TSB includes on misfire code...
OBD2 scanner don't get all factory codes which might be essential info...
my snap on scanners costed me over $15000 and it still doesn't cover as good as factory scan tool such as tech 2 ,DRB3 ......blah blah blah .....
correctly obtain information is a lot easier than random excessive labor
I apologize for some txting wording are use due to convenience
I've been using an OBD2 scanner to read my misfires. I have random misfires on all cylinders and quite a few more on cylinder 6.
Knowing that I have a problem with cylinder 6 doesn't tell me what the problem is. Swapping wires, plugs and then coils is an easy way to determine if the problem is the wire, plug, or coil. A Tech 2 can't tell you if the problem is the wire, just which cylinder it is.
Slow down, read the thread you're replying to, and use proper spelling and punctuation when you reply and people will take you more seriously.[/QUOTE
I did read it very careful....u mentioned p0300 which is random misfire happened previous to this time....
that is why I suggest using mode 6 on OBD2 to look at the true offender
freeze frame help to determine what condition when symptoms happended that's what Chevrolet TSB includes on misfire code...
OBD2 scanner don't get all factory codes which might be essential info...
my snap on scanners costed me over $15000 and it still doesn't cover as good as factory scan tool such as tech 2 ,DRB3 ......blah blah blah .....
correctly obtain information is a lot easier than random excessive labor
I apologize for some txting wording are use due to convenience
Thread Starter
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
I did read it very careful....u mentioned p0300 which is random misfire happened previous to this time....
that is why I suggest using mode 6 on OBD2 to look at the true offender
freeze frame help to determine what condition when symptoms happended that's what Chevrolet TSB includes on misfire code...
OBD2 scanner don't get all factory codes which might be essential info...
my snap on scanners costed me over $15000 and it still doesn't cover as good as factory scan tool such as tech 2 ,DRB3 ......blah blah blah .....
correctly obtain information is a lot easier than random excessive labor
I apologize for some txting wording are use due to convenience
that is why I suggest using mode 6 on OBD2 to look at the true offender
freeze frame help to determine what condition when symptoms happended that's what Chevrolet TSB includes on misfire code...
OBD2 scanner don't get all factory codes which might be essential info...
my snap on scanners costed me over $15000 and it still doesn't cover as good as factory scan tool such as tech 2 ,DRB3 ......blah blah blah .....
correctly obtain information is a lot easier than random excessive labor
I apologize for some txting wording are use due to convenience
Instructor
Joined: May 2015
Posts: 115
Likes: 2
From: houston tx
opssed !!
Thread Starter
Drifting
Joined: Mar 2010
Posts: 1,628
Likes: 15
From: Seattle WA
So, I'm pretty sure i know what's going on.
I put in a new PCM when I got the mail-order tune. My old PCM was doing some really, really strange things (click this to see some strange sheet) so I had ECS set me up with a new PCM with their tune in it.
I never did the CASE relearn after installing it. Bad me.
I'll see if I can find someone local with a Tech 2 who can help me do the relearn, otherwise I'll swing by some shop to do it. I still have the new wires that I'll be putting on, but my bet is that it's the CASE problem and not real misfires.
I put in a new PCM when I got the mail-order tune. My old PCM was doing some really, really strange things (click this to see some strange sheet) so I had ECS set me up with a new PCM with their tune in it.
I never did the CASE relearn after installing it. Bad me.
I'll see if I can find someone local with a Tech 2 who can help me do the relearn, otherwise I'll swing by some shop to do it. I still have the new wires that I'll be putting on, but my bet is that it's the CASE problem and not real misfires.
Drifting
Joined: Sep 2007
Posts: 1,649
Likes: 50
From: Goldsboro NC
So, I'm pretty sure i know what's going on.
I put in a new PCM when I got the mail-order tune. My old PCM was doing some really, really strange things (click this to see some strange sheet) so I had ECS set me up with a new PCM with their tune in it.
I never did the CASE relearn after installing it. Bad me.
I'll see if I can find someone local with a Tech 2 who can help me do the relearn, otherwise I'll swing by some shop to do it. I still have the new wires that I'll be putting on, but my bet is that it's the CASE problem and not real misfires.
I put in a new PCM when I got the mail-order tune. My old PCM was doing some really, really strange things (click this to see some strange sheet) so I had ECS set me up with a new PCM with their tune in it.
I never did the CASE relearn after installing it. Bad me.
I'll see if I can find someone local with a Tech 2 who can help me do the relearn, otherwise I'll swing by some shop to do it. I still have the new wires that I'll be putting on, but my bet is that it's the CASE problem and not real misfires.
