!!!ECU Update For Throttle By Wire!!!
03-19-2003, 08:20 PM
#82
Senior Member
Join Date: Jan 2001
Posts: 1,816
you know, I still have no clue what you guys are talking about regarding hesitation. I drive an early build 2002, and i haven't noticed or been able to reproduce it at all. of course i've read countless posts regarding this, but i can't seem to figure out what it's like.
either way, i want my ecu update
either way, i want my ecu update
03-20-2003, 01:20 AM
#85
I called the dealership and asked them if they knew about it. The guy didn't give me a yes or a no. He said I have to bring the car in and they will check it out. He also told me to bring in TSB number 
. I am going to bring him the whole TSB )) Today is the day. I will let you guys know ow it went.
. I am going to bring him the whole TSB )) Today is the day. I will let you guys know ow it went.
03-20-2003, 05:52 AM
#86
Donating Maxima.org Member
Join Date: Jan 2003
Posts: 69
Originally posted by Max03SE
...The bulletin number for auto's is NTB03-023.The bulletin's heading says "Lack of power or hesitation"...
...The bulletin number for auto's is NTB03-023.The bulletin's heading says "Lack of power or hesitation"...
Am I looking in the wrong place? (BTW, the - has to be taken out just to get the whole number in)
Thanks,
Nick
03-20-2003, 07:06 AM
#87
Senior Member
Join Date: Jan 2003
Posts: 191
Originally posted by massvmax2003
This TSB # doesn't exist on http://www.nhtsa.dot.gov/cars/problems/tsb/
Am I looking in the wrong place? (BTW, the - has to be taken out just to get the whole number in)
Thanks,
Nick
This TSB # doesn't exist on http://www.nhtsa.dot.gov/cars/problems/tsb/
Am I looking in the wrong place? (BTW, the - has to be taken out just to get the whole number in)
Thanks,
Nick
03-20-2003, 07:11 AM
#88
Supporting Maxima.org Member
Join Date: Feb 2002
Posts: 1,489
Originally posted by Chinkzilla
you know, I still have no clue what you guys are talking about regarding hesitation. I drive an early build 2002, and i haven't noticed or been able to reproduce it at all. of course i've read countless posts regarding this, but i can't seem to figure out what it's like.
either way, i want my ecu update
you know, I still have no clue what you guys are talking about regarding hesitation. I drive an early build 2002, and i haven't noticed or been able to reproduce it at all. of course i've read countless posts regarding this, but i can't seem to figure out what it's like.
either way, i want my ecu update
Carefull what you wish for. Everytime I take my car in for a TSB that I really didn't seem to need, my Max came back worse
than when it went in!I fear the ECU upgrade, but I will probably do it just because....
03-20-2003, 07:18 AM
#89
Senior Member
Join Date: Jan 2003
Posts: 191
Originally posted by dblrr900
Carefull what you wish for. Everytime I take my car in for a TSB that I really didn't seem to need, my Max came back worse than when it went in!
I fear the ECU upgrade, but I will probably do it just because....
Carefull what you wish for. Everytime I take my car in for a TSB that I really didn't seem to need, my Max came back worse
than when it went in!I fear the ECU upgrade, but I will probably do it just because....
03-20-2003, 02:56 PM
#92
Senior Member
Join Date: Dec 2001
Posts: 239
Re: !!!ECM Update For Throttle By Wire!!!
Called Mossy Nissan in Houston. Ohhhh yeh!
He knew exactly what I was talking about. Gonna get my oil chg'd this Saturday. I'm gonna see if they can do the ECM then. They might only be able to do it on a weekday though.
Yu da' man!
He knew exactly what I was talking about. Gonna get my oil chg'd this Saturday. I'm gonna see if they can do the ECM then. They might only be able to do it on a weekday though.
Yu da' man!
03-20-2003, 03:29 PM
#93
Donating Maxima.org Member
Join Date: Mar 2002
Posts: 161
Re: Re: !!!ECM Update For Throttle By Wire!!!
Originally posted by CHAZMAX
Called Mossy Nissan in Houston. Ohhhh yeh!
He knew exactly what I was talking about. Gonna get my oil chg'd this Saturday. I'm gonna see if they can do the ECM then. They might only be able to do it on a weekday though.
Yu da' man!
Called Mossy Nissan in Houston. Ohhhh yeh!
He knew exactly what I was talking about. Gonna get my oil chg'd this Saturday. I'm gonna see if they can do the ECM then. They might only be able to do it on a weekday though.
Yu da' man!
in and I would like to take it over to Mossy for this TSB.
thanks,
boo
03-20-2003, 05:12 PM
#94
Supporting Maxima.org Member
Join Date: May 2002
Location: Atlanta
Posts: 1,815
Originally posted by SR20DEN
The sizes are much different. Our MAF is 70mm just like the TB. MOst PVC is measured ID which means the 3" PVC has an inner diameter of 76.2mm. My A/F meter showed that anything above 4000 rpm under WOT was in a lean condition. This makes perfect sense because the probe cannot account for all of the air thats going past it. The volume is the same but the air velocity is less across the larger area. I didn't use this setup for very long because I had no way to tune it. For normal street driving it was awesome but for racing it sucked.
The mount was simple. I used standard PVC that has a 1/4" wall thickness. I drilled a hole in the PVC to a near perfect size to mount the probe and have it seal. Then I shaved a flat spot across that hole for stability and used the same screws from the oem MAF.
The sizes are much different. Our MAF is 70mm just like the TB. MOst PVC is measured ID which means the 3" PVC has an inner diameter of 76.2mm. My A/F meter showed that anything above 4000 rpm under WOT was in a lean condition. This makes perfect sense because the probe cannot account for all of the air thats going past it. The volume is the same but the air velocity is less across the larger area. I didn't use this setup for very long because I had no way to tune it. For normal street driving it was awesome but for racing it sucked.
The mount was simple. I used standard PVC that has a 1/4" wall thickness. I drilled a hole in the PVC to a near perfect size to mount the probe and have it seal. Then I shaved a flat spot across that hole for stability and used the same screws from the oem MAF.
Here is some diameters I have using a caliper.
The TB's I.D. is 73.5-74.1mm
Stock MAF I.D. is 69.5-70.1mm
Frankencar 68mm
Frankencar W/both ends cut off 72mm*
Firm Fab 70mm
*since the Frank tube is cut using a crimp style cutter it flares inward. But with the size of the MAF with the Frank no use can be made the extra 3mm. I don't think it would really help the much anyway right...
03-20-2003, 05:19 PM
#95
Originally posted by maximaman777
Here is some diameters I have using a caliper.
The TB's I.D. is 73.5-74.1mm
Stock MAF I.D. is 69.5-70.1mm
Frankencar 68mm
Frankencar W/both ends cut off 72mm*
Firm Fab 70mm
*since the Frank tube is cut using a crimp style cutter it flares inward. But with the size of the MAF with the Frank no use can be made the extra 3mm. I don't think it would really help the much anyway right...
Here is some diameters I have using a caliper.
The TB's I.D. is 73.5-74.1mm
Stock MAF I.D. is 69.5-70.1mm
Frankencar 68mm
Frankencar W/both ends cut off 72mm*
Firm Fab 70mm
*since the Frank tube is cut using a crimp style cutter it flares inward. But with the size of the MAF with the Frank no use can be made the extra 3mm. I don't think it would really help the much anyway right...
03-20-2003, 07:01 PM
#96
went to a dealer today. they checked it out. he said that he didn't feel any hesitations (weird), but they will fix it anyway because it applies to my car . And the MAF will have to be replaced too. So, I am going back next week (they are waiting for a new MAF to come in) and they will fix it altogether.
. And the MAF will have to be replaced too. So, I am going back next week (they are waiting for a new MAF to come in) and they will fix it altogether.
Originally posted by Vadim
I called the dealership and asked them if they knew about it. The guy didn't give me a yes or a no. He said I have to bring the car in and they will check it out. He also told me to bring in TSB number. I am going to bring him the whole TSB )) Today is the day. I will let you guys know ow it went.
I called the dealership and asked them if they knew about it. The guy didn't give me a yes or a no. He said I have to bring the car in and they will check it out. He also told me to bring in TSB number
. I am going to bring him the whole TSB )) Today is the day. I will let you guys know ow it went.
03-20-2003, 09:41 PM
#97
Junior Member
Join Date: Mar 2003
Posts: 26
Re: Here's the Service Bulletin
Originally posted by 2k2SEmax
Everyone can now download a copy of the service bulletin Here
I recommend you right click and Save Target As...to your local hard drive.
It is in PDF format so you will need Adobe Acrobat Reader to view it. Enjoy.
Everyone can now download a copy of the service bulletin Here
I recommend you right click and Save Target As...to your local hard drive.
It is in PDF format so you will need Adobe Acrobat Reader to view it. Enjoy.
03-21-2003, 05:04 AM
#99
Supporting Maxima.org Member
Join Date: May 2002
Location: Atlanta
Posts: 1,815
Originally posted by Vadim
went to a dealer today. they checked it out. he said that he didn't feel any hesitations (weird), but they will fix it anyway because it applies to my car. And the MAF will have to be replaced too. So, I am going back next week (they are waiting for a new MAF to come in) and they will fix it altogether.
went to a dealer today. they checked it out. he said that he didn't feel any hesitations (weird), but they will fix it anyway because it applies to my car
. And the MAF will have to be replaced too. So, I am going back next week (they are waiting for a new MAF to come in) and they will fix it altogether.
03-21-2003, 05:58 AM
#100
Newbie - Just Registered
Join Date: Mar 2003
Posts: 8
Called my local dealer to schedule a 30k in three weeks. Mentioned the bulletin to the manager and, big shock, her response "huh?"!
I expected this, so I had the bulletin # in hand and passed it along. Hopefully they are smart enough to research this before I bring it in. I don't expect that they will do it then ahd there, since I'm getting a full servicing, and they will, no doubt, need to order a new MAF.
Can't wait to hear the first results.
I expected this, so I had the bulletin # in hand and passed it along. Hopefully they are smart enough to research this before I bring it in. I don't expect that they will do it then ahd there, since I'm getting a full servicing, and they will, no doubt, need to order a new MAF.
Can't wait to hear the first results.
03-21-2003, 06:28 AM
#102
Re: NTB03-023 (AUTOS)
Originally posted by VQ35DE
Can someone please scan & post TSB# NTB03-023 (this is the one for autos)? My dumb dealers will have to see it to know what it is. THANKS
Can someone please scan & post TSB# NTB03-023 (this is the one for autos)? My dumb dealers will have to see it to know what it is. THANKS
Thanks to however can post this.
03-21-2003, 07:06 AM
#103
Senior Member
Join Date: Dec 2001
Posts: 239
Re: Re: Re: !!!ECM Update For Throttle By Wire!!!
Originally posted by boo
Chazmax, let me know how it goes! I need to take my wife's car
in and I would like to take it over to Mossy for this TSB.
thanks,
boo
Chazmax, let me know how it goes! I need to take my wife's car
in and I would like to take it over to Mossy for this TSB.
thanks,
boo
No prob...
They (service) said they might not get me in this Saturday, but I'm gonna try to get there as early as possible. I'll let ya know.
03-21-2003, 07:11 AM
#104
Junior Member
Join Date: Feb 2003
Posts: 18
Please Let Me Know ABout this
I have a 2k3 6 speed, and would love to know if your dealer is for real, I notice the problem as well. I would love to get it fixed, when are you going in to get this done, and who is your dealer?
Thanks
adam
Thanks
adam
03-21-2003, 07:35 AM
#105
Member
Join Date: Feb 2003
Posts: 79
Originally posted by Chinkzilla
you know, I still have no clue what you guys are talking about regarding hesitation. I drive an early build 2002, and i haven't noticed or been able to reproduce it at all. of course i've read countless posts regarding this, but i can't seem to figure out what it's like.
either way, i want my ecu update
you know, I still have no clue what you guys are talking about regarding hesitation. I drive an early build 2002, and i haven't noticed or been able to reproduce it at all. of course i've read countless posts regarding this, but i can't seem to figure out what it's like.
either way, i want my ecu update
Even passengers notice it in my car. It feels like a jerky foot on the accelerator, even when you are smooth as butter. Feels like you let totally off the gas then stomp it. Its really just a split second or so, most noticeable when you are changing from partial throttle, to easing down on the throttle. I'm guessing the reason the TSB mentions 2-3k rpms is this is the most noticeable point in the power curve you can feel it.
Do this: leave your car in 2nd or 3rd, drive a steady speed anywhere between 2-3k rpm for several seconds, then ease down smoothly on the gas, way down. I get the hesitation one in every 3 times I do this. It really jerks the car, to a passenger it feels like you let totally off the gas then stomp it for a split second, then it smooths out and works normally.
03-21-2003, 07:55 AM
#106
Donating Maxima.org Member
Join Date: Aug 2001
Posts: 287
My car is at Rosenthal Nissan right now for 15K service, wind noise TSB and hesitation TSB. I spoke to my service mgr and left copies of both TSBs with him. He has never tried to bs me over the last 11yrs so I trust him to be honest (note: the sales team is completely different story). I fully expect that both of these issues will be taken care.
I'll keep you posted.
I'll keep you posted.
03-21-2003, 07:58 AM
#107
Senior Member
Join Date: Jan 2001
Posts: 1,816
Originally posted by tita6
You definately should know if you had the hesitation (unless you are an extremenly herky-jerky driver anyway). I will describe the symtoms I have the best that I can..
Even passengers notice it in my car. It feels like a jerky foot on the accelerator, even when you are smooth as butter. Feels like you let totally off the gas then stomp it. Its really just a split second or so, most noticeable when you are changing from partial throttle, to easing down on the throttle. I'm guessing the reason the TSB mentions 2-3k rpms is this is the most noticeable point in the power curve you can feel it.
Do this: leave your car in 2nd or 3rd, drive a steady speed anywhere between 2-3k rpm for several seconds, then ease down smoothly on the gas, way down. I get the hesitation one in every 3 times I do this. It really jerks the car, to a passenger it feels like you let totally off the gas then stomp it for a split second, then it smooths out and works normally.
You definately should know if you had the hesitation (unless you are an extremenly herky-jerky driver anyway). I will describe the symtoms I have the best that I can..
Even passengers notice it in my car. It feels like a jerky foot on the accelerator, even when you are smooth as butter. Feels like you let totally off the gas then stomp it. Its really just a split second or so, most noticeable when you are changing from partial throttle, to easing down on the throttle. I'm guessing the reason the TSB mentions 2-3k rpms is this is the most noticeable point in the power curve you can feel it.
Do this: leave your car in 2nd or 3rd, drive a steady speed anywhere between 2-3k rpm for several seconds, then ease down smoothly on the gas, way down. I get the hesitation one in every 3 times I do this. It really jerks the car, to a passenger it feels like you let totally off the gas then stomp it for a split second, then it smooths out and works normally.
I thought the hesitation was a pause before any noticable acceleration was felt. I have no experienced this.
03-21-2003, 08:11 AM
#108
Member
Join Date: Jun 2002
Posts: 95
Originally posted by tita6
You definately should know if you had the hesitation (unless you are an extremenly herky-jerky driver anyway). I will describe the symtoms I have the best that I can..
Even passengers notice it in my car. It feels like a jerky foot on the accelerator, even when you are smooth as butter. Feels like you let totally off the gas then stomp it. Its really just a split second or so, most noticeable when you are changing from partial throttle, to easing down on the throttle. I'm guessing the reason the TSB mentions 2-3k rpms is this is the most noticeable point in the power curve you can feel it.
Do this: leave your car in 2nd or 3rd, drive a steady speed anywhere between 2-3k rpm for several seconds, then ease down smoothly on the gas, way down. I get the hesitation one in every 3 times I do this. It really jerks the car, to a passenger it feels like you let totally off the gas then stomp it for a split second, then it smooths out and works normally.
You definately should know if you had the hesitation (unless you are an extremenly herky-jerky driver anyway). I will describe the symtoms I have the best that I can..
Even passengers notice it in my car. It feels like a jerky foot on the accelerator, even when you are smooth as butter. Feels like you let totally off the gas then stomp it. Its really just a split second or so, most noticeable when you are changing from partial throttle, to easing down on the throttle. I'm guessing the reason the TSB mentions 2-3k rpms is this is the most noticeable point in the power curve you can feel it.
Do this: leave your car in 2nd or 3rd, drive a steady speed anywhere between 2-3k rpm for several seconds, then ease down smoothly on the gas, way down. I get the hesitation one in every 3 times I do this. It really jerks the car, to a passenger it feels like you let totally off the gas then stomp it for a split second, then it smooths out and works normally.
Scott
03-21-2003, 08:13 AM
#110
Senior Member
Join Date: Feb 2002
Posts: 1,322
I am still interested to know if I should take off the intake prior to taking it in. I will be dealing with Courtesy Nissan. Since they sell intakes, exhaust, and other mods, I would not think they would have a problem with it. What do you guys think?
03-21-2003, 09:04 AM
#112
Junior Member
Join Date: Mar 2003
Posts: 26
Originally posted by skandalouz
i dont see anything on the bulletin about autos.
i dont see anything on the bulletin about autos.
03-21-2003, 11:23 AM
#115
It's chrome alright...
Join Date: Dec 2001
Posts: 4,009
as for mods it completely depends on the dealer. I called mine to ask (anonymously, of course ) about an aftermarket intake on a 2k2 Max. He gave me a song and dance about how it could void the warranty. I'll just go back to stock when I bring it in, but if I was you I'd call first (anonymously, of course ) and get their take on it.
) about an aftermarket intake on a 2k2 Max. He gave me a song and dance about how it could void the warranty. I'll just go back to stock when I bring it in, but if I was you I'd call first (anonymously, of course ) and get their take on it.
03-21-2003, 11:27 AM
#116
If they have to replace the MAF for this TSB, do you guys think I need to take my intake off? I kinda don't want to do that. But I might want to do it anyways, cause they might screw up the intake install when installing new MAF.
03-21-2003, 11:58 AM
#117
It's chrome alright...
Join Date: Dec 2001
Posts: 4,009
Originally posted by Dany
If they have to replace the MAF for this TSB, do you guys think I need to take my intake off? I kinda don't want to do that. But I might want to do it anyways, cause they might screw up the intake install when installing new MAF.
If they have to replace the MAF for this TSB, do you guys think I need to take my intake off? I kinda don't want to do that. But I might want to do it anyways, cause they might screw up the intake install when installing new MAF.
03-21-2003, 12:32 PM
#118
Donating Maxima.org Member
Join Date: Aug 2001
Posts: 287
Originally posted by ripper
My car is at Rosenthal Nissan right now for 15K service, wind noise TSB and hesitation TSB. I spoke to my service mgr and left copies of both TSBs with him. He has never tried to bs me over the last 11yrs so I trust him to be honest (note: the sales team is completely different story). I fully expect that both of these issues will be taken care.
I'll keep you posted.
My car is at Rosenthal Nissan right now for 15K service, wind noise TSB and hesitation TSB. I spoke to my service mgr and left copies of both TSBs with him. He has never tried to bs me over the last 11yrs so I trust him to be honest (note: the sales team is completely different story). I fully expect that both of these issues will be taken care.
I'll keep you posted.
Update:
My serv rep just called and told me that my MAF does not require the replacement. I want to believe that but I'll check the part # over the weekend to be sure (there's a difference between trustful and naive). They ARE re-burning the ECM.
He told me that some Nissan rep came around and told them that oiled air filters (I currently have K&N drop-in) are causing MAF failures. He further stated that my MAF checked out OK but he is required to replace my K&N with a Nissan standard filter.
CAUTION: Don't go to Rosenthal for this TSB without putting your stock intake back on!
Also, they are applying a different wind noise TSB specific to the 2k2s. I knew that the one I had was for 00-01 only.
I'll update later to let you know if I notice a difference from either of these.
PS: Thanks to the Org, 2K2SEMax and Max03SE for the great info!
03-21-2003, 01:55 PM
#119
Also, they are applying a different wind noise TSB specific to the 2k2s. I knew that the one I had was for 00-01 only.
03-21-2003, 02:13 PM
#120
Donating Maxima.org Member
Join Date: Aug 2001
Posts: 287
Originally posted by Y2K2Driver
Do you have the number for the unpdated wind noise TSB. I'm going in tomorrow for this, but all I have is the I35 TSB which simply adds another piece of foam tape over the 00-01 Maxima TSB. I did this, but if they have a replacement part I'd rather have that. Also, hopefully the ECM update will apply since that really ****es me off at times, specifically during the summer, which is fast approaching. Thanks
Do you have the number for the unpdated wind noise TSB. I'm going in tomorrow for this, but all I have is the I35 TSB which simply adds another piece of foam tape over the 00-01 Maxima TSB. I did this, but if they have a replacement part I'd rather have that. Also, hopefully the ECM update will apply since that really ****es me off at times, specifically during the summer, which is fast approaching. Thanks
I just tried to call him but he's gone for the day. I'm leaving to pick up the car shortly. If there is any serv rep still who has the info, I'll try to get the TSB# from him. If not, it might be Monday.
Later