New AM600 MAFS,still having hesitation after 4k HELP!
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Joined: Aug 2004
Posts: 885
New AM600 MAFS,still having hesitation after 4k HELP!
Guys i am outta ideas to finding out what is wrong with my Max, i need your help ! Last thursday went to work, car drove fine, strong, and robust, on the way home noticed car had a hard time getting over 4k rpms, SES light comes on.Went to autozone and had them read the codes,5 codes were present,1 was the MAFS , one was major exhaust leak, possibly the gas cap(had that happen before),the other 3 were 2 high voltage response and 1 low voltage response. Brought a AM600 MAFS, put that on , slightly better but car still has a hard time getting over 4500 rpms now. I then unplugged the car battery and let the ecu reset itself for exactly 24 hours. Hooked the battery back up , started car , SES light is off , took the car out for a test drive ,car seems a little bit repsonsive until WOT and the car just lags , once again right around 4500 rpms.
I changed the spark plugs with OEM replacements(NGK platinums) at 55k miles,cone filter is clean,religious oil changes,tranny oil flush and refil at 60k, car currently has 94k miles on it.
Also in nuetral the car would rev strong all the way to redline which puzzels me.
What do you guys think it could be?
I changed the spark plugs with OEM replacements(NGK platinums) at 55k miles,cone filter is clean,religious oil changes,tranny oil flush and refil at 60k, car currently has 94k miles on it.
Also in nuetral the car would rev strong all the way to redline which puzzels me.
What do you guys think it could be?
Originally Posted by Daily Driver2k2
Anybody.....i am sure somebody has experienced this. your help is very much appreciated. I look through the stickies and i can't find a thing.
Originally Posted by EastSideMaxima
I heard that you have to reprogram the ECM after u replace the MAF... thats probably why its still acting up.
While you're getting your ECU reprogrammed, ask them to advance the timing +2 or 3 points.
Daily Driver: Come to the meet here:
http://forums.maxima.org/showthread.php?t=382071
and I can check your car out personally. I have a couple questions for you as well; do you still have the stock exhaust system, and how many miles are on the car.
http://forums.maxima.org/showthread.php?t=382071
and I can check your car out personally. I have a couple questions for you as well; do you still have the stock exhaust system, and how many miles are on the car.
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Joined: Aug 2000
Posts: 2,529
Originally Posted by GBAUER
take it to an autozone and get 'er done fur free! Or, you can unplug the battery overnight. Your choice.
get it checked for free? or updated for free?
how much does an ECU update cost from nissan?
Originally Posted by GBAUER
take it to an autozone and get 'er done fur free! Or, you can unplug the battery overnight. Your choice.
You can't get the Consult II update for a new MAF at Autozone, or any other parts store for that matter. You do not need to reset the ECU...you need to input NEW DATA here folks...
Originally Posted by lex3015
i replaced my MAF sensor 2 days ago. i did the switch, unplugged my battery....watched a movie, came back and reconnected it and my ses light was gone and my car is back to normal.
He drives a 5.5th Gen, and you drive a 5th Gen. Little different procedures between his car and yours...so don't post unless you actually know what you are talking about, please.
Originally Posted by Quicksilver
You can't get the Consult II update for a new MAF at Autozone, or any other parts store for that matter. You do not need to reset the ECU...you need to input NEW DATA here folks...
daily driver2k2....did u ever get your problem resolved? i am experiencing the same problems as you...i have a 2k2 but replaced it with a 22680-2y001 MAF...instead of the 22680 AM600 (costs $400)....i slapped her on and gained some power back....but noticed my car goes nowhere after 4k.....and I also do have a VERY hard time starting up my car....
i'm planning to go to a stealership to get this settled....via consult II.....just wondering if u did it...
i'm planning to go to a stealership to get this settled....via consult II.....just wondering if u did it...
Originally Posted by steven88
daily driver2k2....did u ever get your problem resolved? i am experiencing the same problems as you...i have a 2k2 but replaced it with a 22680-2y001 MAF...instead of the 22680 AM600 (costs $400)....i slapped her on and gained some power back....but noticed my car goes nowhere after 4k.....and I also do have a VERY hard time starting up my car....
i'm planning to go to a stealership to get this settled....via consult II.....just wondering if u did it...
i'm planning to go to a stealership to get this settled....via consult II.....just wondering if u did it...
Do you have stock manifolds?
yup....stock exhaust+intake manifolds.....why do u ask btw? do u suggest that my exhaust manifold precats are clogged and causing me to experience this? blackbirdVQ told me something about this awhile back....but i dunno
you think so e55? you still think i should go to the dealers and have them reflash my ECU? I did get a new maf for my 2k2....a 22680-2y001 though...it's off a 2k-2k1...all i did was transfer my IAT...
I still get a nasty start-up and my low end is still not up to par before the limp mode...it did get a little better than BEFORE i installed the 22680 2y001...i just want everything to go back to NORMAL...and i heard blackbird tellin me its necessary to do the reflash in order for everything to go back to normal...
is there anyway to determine if my precats are clogged without actually removing the whole exhaust system? i heard header installs are PITA and I don't wanna tackle it until i'm for sure my MAF or precats are dead....
sorry for the newbie-ish questions....i'm just in need of help....this limp mode is ghey :0
I still get a nasty start-up and my low end is still not up to par before the limp mode...it did get a little better than BEFORE i installed the 22680 2y001...i just want everything to go back to NORMAL...and i heard blackbird tellin me its necessary to do the reflash in order for everything to go back to normal...
is there anyway to determine if my precats are clogged without actually removing the whole exhaust system? i heard header installs are PITA and I don't wanna tackle it until i'm for sure my MAF or precats are dead....
sorry for the newbie-ish questions....i'm just in need of help....this limp mode is ghey :0
Originally Posted by E55AMG2
The precats are indeed melted...probably along with your stocker. This is why you have no response past 4k.
that would suck... I actually thought ya had headers, Steve...
Originally Posted by steven88
you think so e55? you still think i should go to the dealers and have them reflash my ECU? I did get a new maf for my 2k2....a 22680-2y001 though...it's off a 2k-2k1...all i did was transfer my IAT...
I still get a nasty start-up and my low end is still not up to par before the limp mode...it did get a little better than BEFORE i installed the 22680 2y001...i just want everything to go back to NORMAL...and i heard blackbird tellin me its necessary to do the reflash in order for everything to go back to normal...
is there anyway to determine if my precats are clogged without actually removing the whole exhaust system? i heard header installs are PITA and I don't wanna tackle it until i'm for sure my MAF or precats are dead....
sorry for the newbie-ish questions....i'm just in need of help....this limp mode is ghey :0
I still get a nasty start-up and my low end is still not up to par before the limp mode...it did get a little better than BEFORE i installed the 22680 2y001...i just want everything to go back to NORMAL...and i heard blackbird tellin me its necessary to do the reflash in order for everything to go back to normal...
is there anyway to determine if my precats are clogged without actually removing the whole exhaust system? i heard header installs are PITA and I don't wanna tackle it until i'm for sure my MAF or precats are dead....
sorry for the newbie-ish questions....i'm just in need of help....this limp mode is ghey :0
You should have the flash done and MAF changed. If thats the problem, no sweat and maybe $100 to fix (if they charge you). If that doesnt fix it, go ahead and get yourself some headers and have them installed, those should clear up the problem (and give you a couple hp to boot
)
Originally Posted by Puppetmaster
that would suck... I actually thought ya had headers, Steve...
e55 - but since they are going to have the consult II hooked up anyway....might as well do my timing right? heard it literally only takes 5 seconds....oh btw i found a stealership who can do my MAF update....they said 42 bucks out the door...i was like SWEET! lets do this!
Originally Posted by steven88
e55 - but since they are going to have the consult II hooked up anyway....might as well do my timing right? heard it literally only takes 5 seconds....oh btw i found a stealership who can do my MAF update....they said 42 bucks out the door...i was like SWEET! lets do this!
The MAF and software flash takes about 1 hour (the software takes about 1 hour to flash at 9600kbps, which is the speed of an OBDII port) and you cant do anything else while its flashing. If you really want the timing done....go for it, but there really is no proven benefit to it. $42 out the door is a steal....go for it.
UPDATE - okay back from the stealership....I ended up talking to another service rep and told him I need new software for my ECU becuz of my new MAF....he says "that will be $85"...and i'm like "wtf? I talked to Fred yesterday and he quoted me only $42"....so he walks over and brings Fred....and he informs me that the MAF indeed is $85 to fix becuz its an hour labor....he just made a mistake on the phone yesterday 
.....
anyway he felt bad for me and said he'll do everything for $70...i said cool u better fix it....so then after an hr later...i get my car keys back and fire her up...still a rough start...but when i took it on the streets...a noticeable power gain....it seems to pick up fairly well now....but i do experience a big loss in the mid-range and high-end....so i'm going to conclude its my exhaust manifolds.....but it sux though...i gotta drive like this for awhile until me and my friends can go install it
E55 thanks for all the help...appreciate it
.....anyway he felt bad for me and said he'll do everything for $70...i said cool u better fix it....so then after an hr later...i get my car keys back and fire her up...still a rough start...but when i took it on the streets...a noticeable power gain....it seems to pick up fairly well now....but i do experience a big loss in the mid-range and high-end....so i'm going to conclude its my exhaust manifolds.....but it sux though...i gotta drive like this for awhile until me and my friends can go install it
E55 thanks for all the help...appreciate it
e55...do u know on top of your head if my ride be considered the early or the late model if it is made in july of 2002?
steven88...just curious, what is the manufacture date for your ride and yes you ride is sweet yo.
steven88...just curious, what is the manufacture date for your ride and yes you ride is sweet yo.
thanks shogun...my production date is 10/01....i believe for 2k2's they had 3 dates....9/01 10/01 and 12/01....not totally sure though
i think 7/02 an early one....not totally sure though....but i know for sure the 2k4 maximas were seen in lots mid 2003 as an 2004 model....so i bet the 03 maximas had to be produced real early and sold early
i think 7/02 an early one....not totally sure though....but i know for sure the 2k4 maximas were seen in lots mid 2003 as an 2004 model....so i bet the 03 maximas had to be produced real early and sold early
cool cool. I'm still deciding if I should get a reflash and get the timing advance. My ride pulls smooth and strong after 4k...sometimes I feel a slight torque steer on the highway if I slam it when it is near redline (not sure if torque steer is the right word lol)
thats cool...if u do decide...go to superior nissan....it's right next to yer house too....ask for Fred and Aldolfo (his personal tech) at service dept....they flashed everything for me for 70 bucks...but ionno if they will do it for u at 70....Fred just felt sorry for me cuz he gave me the wrong price over the phone....but just ask anyway....$85 is still a reasonable price though...i mean it does take awhile to upload the info...oh yeah when u ask to change the base ignition timing...make sure u tell that to Aldolfo (not Fred) cuz Aldolfo knows all that stuff while Fred will have no clue and might just say no for liability issues....
went to the dealer to get the ecm update. Talked to Fred and Aldolfo...good service. Plugged my car up with a consult II and advanced my timing to 17 btdc and did the idle air learning. The tech Aldofo told me that I don't need the ecm update as he explained to me that steven88's car is different. He showed me on the consult II how my MAF voltage is at ~1.2V and it is running normal along with everything else and if I get the reflash the voltage will differentiate with the MAF and will run like crap. He thinks my car has been updated already...so I went by what he said. As for the timing advance...not much different maybe a tad bit more pull down low.
great to hear shogun....I knew Fred&Aldolfo were no BS service...they really know what is going on.....
anyway they remember my car? hha thats weird....well if you told them a guy named steven...then they definitely won't remember...cuz my real name isn't steven...lol...well glad to hear they advanced your timing without any questions asked
as far as updating the ecu/maf....just like e55amg2 said...if u have a late model 2k3 i don't think u have to worry too much...only the old 2k2s had this problem and require updating....and i have an old 2k2...so yeah....i can't really determine how well my timing advanced is....cuz my car is still running like ****....but i did notice a different change in sound....how about u shogun?
anyway they remember my car? hha thats weird....well if you told them a guy named steven...then they definitely won't remember...cuz my real name isn't steven...lol...well glad to hear they advanced your timing without any questions asked
as far as updating the ecu/maf....just like e55amg2 said...if u have a late model 2k3 i don't think u have to worry too much...only the old 2k2s had this problem and require updating....and i have an old 2k2...so yeah....i can't really determine how well my timing advanced is....cuz my car is still running like ****....but i did notice a different change in sound....how about u shogun?
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Joined: Sep 2003
Posts: 238
Originally Posted by kasonw
hey,
i got my max more than half a year now and have been reading through these threads and seeing few of the same discussions over and over, i don't mind it, newayz... your hesitation/power loss from 4500 and up could also be because your VIAS is not working at all... go to the HOWTO sticky thread and look for the VIAS fix... our 5th gen max's got a variable intake manifold which opens a second pathway for air to go to the engine. Fix that and the higher RPMs should feel stronger. I did the fix on my car because i was feeling my car as it pass 5000rpm to feel dead dead, as if it was doing a reverse VTEC feeling (i use to own an '92 integra GSR ). After i fix it it felt better, no more power loss feeling. Then recently i felt the car taking real long going from 3000rpm to 4500rpm. This was the MAF, so i went to pinnacle nissan and ordered the new MAF for $78 (great deal), got it and BOOM, the car feels much much stronger throughout the entire rpms, now when i floor it WOT, the car races up the rpm and as it hit pass 5000rpm and the VIAS activates the growl is amazing. Everything is stock in the car for now. next fix is whatever little dents and paint scratch i got on it.. gonna be a $600 job. then its fresh ignition coils and plugs. Hope my experience helps. laters
Kason
i got my max more than half a year now and have been reading through these threads and seeing few of the same discussions over and over, i don't mind it, newayz... your hesitation/power loss from 4500 and up could also be because your VIAS is not working at all... go to the HOWTO sticky thread and look for the VIAS fix... our 5th gen max's got a variable intake manifold which opens a second pathway for air to go to the engine. Fix that and the higher RPMs should feel stronger. I did the fix on my car because i was feeling my car as it pass 5000rpm to feel dead dead, as if it was doing a reverse VTEC feeling (i use to own an '92 integra GSR ). After i fix it it felt better, no more power loss feeling. Then recently i felt the car taking real long going from 3000rpm to 4500rpm. This was the MAF, so i went to pinnacle nissan and ordered the new MAF for $78 (great deal), got it and BOOM, the car feels much much stronger throughout the entire rpms, now when i floor it WOT, the car races up the rpm and as it hit pass 5000rpm and the VIAS activates the growl is amazing. Everything is stock in the car for now. next fix is whatever little dents and paint scratch i got on it.. gonna be a $600 job. then its fresh ignition coils and plugs. Hope my experience helps. laters
Kason
Originally Posted by Quicksilver
He drives a 5.5th Gen, and you drive a 5th Gen. Little different procedures between his car and yours...so don't post unless you actually know what you are talking about, please.
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