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need to know asap difference between ecu

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Old Jun 29, 2007 | 08:22 AM
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need to know asap difference between ecu

need to know if theres any difference between the maxima an i30 ecu same years also any difference between auto vs manual ecu same years
Old Jun 30, 2007 | 08:32 AM
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the auto ECU will look for an automatic trans, itll throw a check engine light for lack of a transmission control module.
Old Jun 30, 2007 | 08:54 AM
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I have an ecu sitting next to me......and it happens to be from......... a '98 5-speed I30T!!!!!!!!! $75 shipped, kevgoods@hotmail.com
Old Jun 30, 2007 | 10:08 AM
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i'm a little curious as well. for those with the tuned ECU's

i know for a fact a 96-98 will not work on 95's because of the new emissions stuff on there. I think a 95 will work on 95-97's without check engine lights and 96 works 97's as well.

the 99 ecu is completely a diffrent animal with MORE emssions and imboilzer in that on.

THIS is only from what i read thru the for sale forum on ppl selling TS ecu's i personally would like to look into getting an ECU but since i have a 98 and people scanning for codes due to emission states i dont want to have a fault and fail. Nor do i want to go thru the hassle of crawling and replacing the ECU every time its that time of year.

if an experience person can shine some light and get it stickied it would be best. Since i know there is no ECU sticky about years.

Auto as stated will look for auto CM. manual i think can swing either way as far as i know.
Old Jun 30, 2007 | 12:16 PM
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^^ he knows his stuff
Old Jun 30, 2007 | 12:50 PM
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Yeah I want a tuned ecu as well but I wonder if a 96 ecu would work in a 98 with no cel? What type of codes would there be and could they be remedied?
Old Jun 30, 2007 | 01:05 PM
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Check the stickies, it says how to get rid of the cels when using a 95-96ecu
Old Jun 30, 2007 | 01:05 PM
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Originally Posted by TurTLe*
i'm a little curious as well. for those with the tuned ECU's

i know for a fact a 96-98 will not work on 95's because of the new emissions stuff on there. I think a 95 will work on 95-97's without check engine lights and 96 works 97's as well.

the 99 ecu is completely a diffrent animal with MORE emssions and imboilzer in that on.

THIS is only from what i read thru the for sale forum on ppl selling TS ecu's i personally would like to look into getting an ECU but since i have a 98 and people scanning for codes due to emission states i dont want to have a fault and fail. Nor do i want to go thru the hassle of crawling and replacing the ECU every time its that time of year.

if an experience person can shine some light and get it stickied it would be best. Since i know there is no ECU sticky about years.

Auto as stated will look for auto CM. manual i think can swing either way as far as i know.
96-98 will work in 95 maximas but you will get a CEL for certain if you use a 97-98 ECU - 96 ECU might or might not give a CEL in a 95. (I'd assume it would give one but I can't say for certain that it always would). I've put a 98 auto ecu in my 95 5spd and drove it for a long time that way.

Installation hassle isn't a big deal if you don't bolt it back in there - it's the hard to reach bolts/screws that make it difficult. If you were to use some velcro to hold it in place down there (perfectly feasible) you could swap ECUs back and forth in 5 minutes.

For the original poster: you may or may not get a CEL using an I30 ECU in a maxima of the same year, there's no guarantee. I remember a thread a while back where some member did exactly that and ended up with a CEL. If you use an auto ECU in a 5spd car you will definately get a CEL regardless of year. 5spd ECU in an auto car will just not work.
Old Jun 30, 2007 | 02:14 PM
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having dome trouble with code p 1336 supposedly is the crankshaft position sensor (pos) changed that one and the one in under the crank pulley(ref)
tested for voltage and ground replaced the ecu and still have the P1336 code so accordingly to the haynes book what could be wrong is the plate that have many teeth that could broken or something if anybody heard of this problem any advice will be appreciated
Old Jun 30, 2007 | 02:43 PM
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95 fed specs will get a CEL with any ECU from 96 to 98. 95 feds dont have a couple emmisions stuff that the 96 on up have.....that will always throw a CEL.Thats my problem having a 95 fed and trying not to have a cel with a tuned ECU..god damn 95 feds ..the 95 calis can use a 96 to 98 fed spec ecu with no CELs IIRC.....oh and auto ecu in a 5 speed will give a CEL 100% of the time...

IIRC the I 30s have a little bit more emmissions stuff....dont qoute me on that though...
Old Jun 30, 2007 | 04:48 PM
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Also, since nobody has mentioned this yet, while a auto ecu will work in a 5-speed, the high idle when you push in the clutch will drive you absolutely nuts and you will regret putting in the auto ecu.

for making this a sticky!

Originally Posted by maximus_pr
having dome trouble with code p 1336 supposedly is the crankshaft position sensor (pos) changed that one and the one in under the crank pulley(ref)
tested for voltage and ground replaced the ecu and still have the P1336 code so accordingly to the haynes book what could be wrong is the plate that have many teeth that could broken or something if anybody heard of this problem any advice will be appreciated
Damn it, I was hoping I finally had that ecu sold, arrgh. CPS codes can also result if you have any starting/starter problems, the fsm is pretty clear on this. Also, if you haven't done so already unbolt the grounds on the upper intake manifold, there are two 10mm bolts, pry apart the ground straps, sand every side and the intake manifold. If you still get the code and don't have any rough starting or poor/weak starter issues than have an assistant turn the crank while you shine a light through the hole the cps bolts into and inspect for any damaged/missing teeth.
Old Jun 30, 2007 | 04:54 PM
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EDITED

You need to match '95, fed/cali spec emmisions and auto/manual trannsmission. Also, if your car is an automatic SE putting in a non SE '95 ecu you're front electorinc motor mount won't work, but that's blah
Old Jun 30, 2007 | 10:11 PM
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Originally Posted by Nealoc187
96-98 will work in 95 maximas but you will get a CEL for certain if you use a 97-98 ECU - 96 ECU might or might not give a CEL in a 95. (I'd assume it would give one but I can't say for certain that it always would).
Sorry what i ment to say was what you stated it will work but CEL is a given.
I'm sure any 4th gen ECU will work in any car aside from the 99's because i dont know too much about them but some might have CEL and some wont pending where u get it from. 99's might work pending on where the imobilzers parts are on the car but i highly doubt it.

Everytime a JWT ECU or a TS ecu shows up for sale i always ask the seller questions related to CEL because i haven't seen a 98 ECU flashed yet but i've seen them running in 98's with CEL and owners just accepted it. Some have CEL on but no faults.

pretty much from my understandings is 95 and 99 are odd ball cars that have a higher chance of CEL then anything unless u get the year. But 95-96 ECu are what JWT accept i think, aleast on their site. The parts on 96-98 are pretty much identical only thing that i know is different is on the 98 there is a s pipe after the cat before the b pipe for the o2 where the older ones don't. Little things like that can affect a CEL to appear or not pending on the sensor. the rear o2 is not a sensitive sensor to throw a CEL tho.

I honestly believe if you get the same trans any 96-98 ECU will work in a 96-98 car without any CEL's. But i don't have experience with it first hand and if someone can tell me from experience then i would pretty much jump on a TS ecu along with other things. Because the timing advance alone on them seems to be pretty noticeable to people. Well honestly they are a little cheaper then engine management systems but i don't know how to tune nor want to spend all day learning and playing. They hold their value for resale easily so selling isn't an issue either way. Just wanted to add that to bolt on list of items for me to get.


Originally Posted by TNation
^^ he knows his stuff
I don't know my stuff actually i'm still learning. If i knew my stuff i would probaly be a owner of a TS ECU.



edit


Originally Posted by Kevlo911
Check the stickies, it says how to get rid of the cels when using a 95-96ecu
my god its there i just went back and read it and i guess the 98 rear o2 was something related.. this was way back then but i wonder can this be solved with a o2 sim instead of replacing the o2 might need to ground that pin but maybe not. very very interested in this.
Old Jun 30, 2007 | 10:47 PM
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Originally Posted by TurTLe*
I honestly believe if you get the same trans any 96-98 ECU will work in a 96-98 car without any CEL's. But i don't have experience with it first hand and if someone can tell me from experience then i would........
Same here, I would like to know that 100% as well, my thoughts are exactly the same as your's, Also I would like to toss 96-98 I30's into the mix
Old Jun 30, 2007 | 10:56 PM
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Originally Posted by KRRZ350
Same here, I would like to know that 100% as well, my thoughts are exactly the same as your's, Also I would like to toss 96-98 I30's into the mix
honestly i doubt we can EVER get 100% because that requires us to have like 6 different combos of years and you wanna go i30 on me but i think i30 and maxima should be compatible given year/trans aleast.

Well as i read that little sticky back dated back in 04. the 96 ECU in a 98 was address with rear o2 like i mentioned because of the s pipe in the 98 it might use a different sensor. I'm more detailed to any changes done in 98 because i own one. There are a LOT of modded 96 ECU's around then any other year and the 2nd most is 95 year. RARELY do i ever see a cali-spec one. And i've yet to see a 98 ECU modded but i know of a couple 98 that have had them 1 with CEL but his state didn't care and 2 without and i think they did the mod with the o2 in the stickies to cure it. But i spoke with them when they were parting out back 1.5 years ago, they are probably gone and i probably have the wrong info
Old Jun 30, 2007 | 11:35 PM
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Just in case this does make it to a sticky, here's the link for 96 ECU in a 98 - Here is how to get rid of P0136 (long)
Old Jul 1, 2007 | 01:22 AM
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Originally Posted by KRRZ350
Part of this is credited to nismology, here is a post of mine from the newbie thread that I think would also be relevant here.........


""Glad you double checked, I don't know WHAT I was thinking when I typed that response, the beer might have influenced it a little though, sorry about that. You need to match '95, fed/cali spec emmisions and auto/manual trannsmission. Also, if your car is an automatic SE putting in a non SE '95 ecu will throw a code for the rear electronic engine mount.""
Rear motor mount? I don't know about anyone else, but I'm a '95 Fed spec SE auto, and my rear motor mount is not electronic as the front one is. Actually, the ECU shouldn't throw a code for the front mount either, I've driven with mine unplugged for quite a while, never a CEL.
Old Jul 1, 2007 | 05:48 AM
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Originally Posted by KRRZ350
Part of this is credited to nismology, here is a post of mine from the newbie thread that I think would also be relevant here.........


""Glad you double checked, I don't know WHAT I was thinking when I typed that response, the beer might have influenced it a little though, sorry about that. You need to match '95, fed/cali spec emmisions and auto/manual trannsmission. Also, if your car is an automatic SE putting in a non SE '95 ecu will throw a code for the rear electronic engine mount.""

That's somewhat wrong. No code for the electronic FRONT motor mount. I disconnected mine long ago.
Old Jul 1, 2007 | 05:49 AM
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Originally Posted by KRRZ350
Just in case this does make it to a sticky, here's the link for 96 ECU in a 98 - Here is how to get rid of P0136 (long)
That is already in the stickies.
Old Jul 1, 2007 | 08:17 AM
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BTW back in the day I sent a 98 ecu into JWT (mistakenly) and they sent it back saying they couldn't do their thing with it. They probably could if they wanted to put in the effort to change whatever needed to be changed but I'm sure they just didn't want to take the time or put forth the effort. 95-96 ECUs is all they normally work with.
Old Jul 1, 2007 | 08:27 AM
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Originally Posted by Nealoc187
BTW back in the day I sent a 98 ecu into JWT (mistakenly) and they sent it back saying they couldn't do their thing with it. They probably could if they wanted to put in the effort to change whatever needed to be changed but I'm sure they just didn't want to take the time or put forth the effort. 95-96 ECUs is all they normally work with.

I think nissan changed manufacturers which is why they can't do it.
Old Jul 1, 2007 | 08:35 AM
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the code im having trouble with P1336 crankshaft position sensor(pos) and the reason i asked for the ecu is because i was going to swap my ecu in his car to see whether or not his ecu was bad mine is a manula I30 and his is a manual maxima same year
Old Jul 1, 2007 | 08:45 AM
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Refer to post #11 first, it is a royal pita to remove an ecu, and more than likely not the problem
Old Jul 1, 2007 | 09:28 AM
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Originally Posted by KRRZ350
Refer to post #11 first, it is a royal pita to remove an ecu, and more than likely not the problem
i know is a pita but what i did was unplugged the one on the car and carefully plugged another and grounded both together all this to avoid removing the ecu if it wasn't the problem but yes its a pita to remove luckly i found a pull an pay junkyard where i found the ecu for only $40 so it was worth trying
Old Jul 1, 2007 | 05:56 PM
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will a 96 ECU get rid of EVAP codes on a 97?
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