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Dark knight
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328 Posts
Discussion Starter #1 (Edited)
Ok Ive been recently feeling 2nd-1st gear slam 2nd to 3rd delay and sometimes 1st to 2nd jerking after car is warmed up. I'am positive its the valve body as the maxima guys describe http://forums.maxima.org/6th-generation-maxima-2004-2008/597683-re5f22a-transmission-fix.html

I plan on changing the valve body but i need to know 100% is our Se-r's 5speed auto's transmission the same as the maxima 6 gens? AW55-51SN / RE5F22A

as i mind as well get a performance valve body that has better flow and shifts. Most performance shops list these valve bodies for maxima's
levelten MAXIMA Valve Body FIX
RevMax http://www.ebay.ca/itm/310398305252?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

has anyone upgraded? or even changed it with rebuild or new oem units know are these VB the same. This is a common problem i want to fix soon as possible with cooler added and new motor mounts.
 

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Dark knight
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328 Posts
Discussion Starter #2
no one knows???? altima se-r - 04-06 maxima same transmission???
 

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MY 2 cents for what is worth

i am pretty positive that they are the same transmission.

the maxima guys cant brag about an better 5 speed auto, there's sucks too!

i know from XP that you should change the fluid religiously in our crappy auto transmission. i hope you did.

maybe start saving for a SFR built tranny and stop wasting YOUR time with the stock transmission, sounds like ur running extra HP. at the end of the day, even if you do get the performance valve body, it will wear faster cause u run higher temps. and be careful with a cooler install, i am a believer that if you create more space for the fluid to run around in, extra stress on the converter.

sorry for not being real useful i havnt tried the upgraded valve body
 

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Dark knight
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328 Posts
Discussion Starter #4
ive did a fluid drain fill and it feels alot better. Its a small problem right now because it doesnt feel bad yet it seldom right now, going to have to drive like a senior. I am going to have to try a new VB right now don't have a couple thousand dollars laying around.

all i really needed to know mainly was compatibilty of VB of altima's and maxima's thanks
 

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i find that it makes sense. i feel that Nissan designed how much fluid goes in the transmission system to a tee. fluid pressure is the difference between lubrication or no lube. even if you dont believe me, or think differently thats ok. as long as i got you to consider it, i'd be happy. my thinking is that more fluid to push, is going to be harder to push.more journals and bends, harder to push. more fluid, longer warm up AND more heat soak from more fluid. your converter is a pump. if you dont believe me again, its okay.

many people love to throw mods on their car without thinking, i think it should be a well thought out process. you might be able to achieve cooler temps a different route, without modifying how much fluid is the tranny, or what direction the tranny fluid is routed.

i.e. trying amsoil fluid, a fan maybe, new grille, battery relocation, fog light removal etc. there's more than one way to skin a deer.

TO the OP, i said i am pretty sure they are the same or compatible
 

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Erect Member
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18,130 Posts
let me ask you something - have you ever seen a transmission fail because of the addition of a cooler? im talking about installation being perfect - not failure from improper installation.
 

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i have seen issues with getting the fluid level bang on as it is harder to do with more fluid, its easy to get an inconsistent reading. and the rest was my limited mechanical theory. i myself considered the tranny cooler mod, but was swayed by the possibility of creating another issue with my car. its more risky than headers, cai, etc.. its your transmission. it makes your car move. if you get a wrong its not gonna be pretty. but doing less riskier things like i said before might yield similar cooling results. i am no aerodynamic engineer, but simply put if you increase airflow to your hood compartment, by removing battery, free flowing grille, removed fog lights, wrapped intake,exhaust and a/c lines it is my opinion that it will do more good than cluttering up the front end of the already cramped engine compartment.

EDIT i did some searching and found a few examples of people running the tranny coolers, so as it may not destroy your transmission instantly, or quickly, but it will add more stress, you cant deny that. its like parking with your wheels straight instead of turned to protect your ball joints.

obviously you want to do an UPGRADE right?
i feel you can do a better more cost effective upgrade than the cooler.
the ways i mentioned would also lower hood temps, even better than just tranny temps
 

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Erect Member
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18,130 Posts
i have seen issues with getting the fluid level bang on as it is harder to do with more fluid, its easy to get an inconsistent reading. and the rest was my limited mechanical theory.

EDIT i did some searching and found a few examples of people running the tranny coolers, so as it may not destroy your transmission instantly, or quickly, but it will add more stress, you cant deny that. its like parking with your wheels straight instead of turned to protect your ball joints.
your mechanical theory is arguing with mechanical tried and true experience. how is it adding more stress? i dont agree that it does and im not seeing it. your transmission already utilizes a cooler. by adding an additional cooler, you are further lowering transmission fluid temps which increases transmission component life. this is fact not theory. keeping that fluid temp lower also means the life of the fluid itself is increased. heat is the biggest enemy to the engine/trans in a car. keep that heat down and in turn, you WILL see lower underhood temps as well.
 

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Super Moderator
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4,952 Posts
Same transmission as the Maxima OP mentioned. And our transmissions are cooled with the coolant lines. Adding a cooler doesn't change the amount of fluid inside the transmission.

I'm also with Asleep on this one. Even if it was a cooler that used transmission fluid, it wouldn't cause any harm.
 

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Dark knight
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328 Posts
Discussion Starter #11
yea are transmission are cooled with the radiator coolant, was just gonna add a cooler to the coolant line. I noticed my coolant is running hotter than before even after drain fill of new coolant. something is goin under my hood?

i have mesh grill, took out fogs lights so air goes straight to cold air intake. I have pretty good air flow.
 

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Snow... what
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3,029 Posts
are your fans working? How many miles are on your car? My coolant temp stayed the same when i added my trans cooler that is half the size of the radiator. Maybe its time for you to get a Mishimoto radiator, or maybe your water pump is going.
 

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Dark knight
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328 Posts
Discussion Starter #13
my fans are going on, i thought they werent. i dunno maybe i was being paranoid. my normal temp is 88 and when staying still goes as high as 96 ish so thats around 190-197 ish i guess thats normal?

I found a place that does valve bodies rebuilt with sonnax part just down the street just my luck its called valve body builders will be installing tommarrow will see if this fixes my shift problems that started 3 weeks ago.
 

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Dark knight
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328 Posts
Discussion Starter #14
yup everything works no more slamming, erratic shift points.
paid 800 bucks plus install
 

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88-96 is perfectly fine. 96 is actually around 205*F, which is on par with the modern car, 180-215 depending on climate and type of driving. I had the same scare last night when I used Torque after a fun drive to work. Tstat opens at 203 or 205 (F) if I'm not mistaken so 96 (C) seems right on. What was it like outside when it was at 88? My median temp (random checks with Torque) was 87 for the last month (Edmonton Spring, so 0-8ish) until it hit 25 this weekend.

I'll still be flushing the coolant twice over the next month.

Edit: This may come in handy for the future, so can you break down that $800 for me? Where'd you get the part, who installed it, for how much, and what else was needed?
 

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Dark knight
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328 Posts
Discussion Starter #17
yeah its around 88 when driving 20 degress out. i changed my reading to us metric and it stayed at 199 when i let my car idle for 10 minutes in 26 degree. my car is fine but im still gong to add a tranny cooler
 

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05 Altima SE 3.5
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20 Posts
my fans are going on, i thought they werent. i dunno maybe i was being paranoid. my normal temp is 88 and when staying still goes as high as 96 ish so thats around 190-197 ish i guess thats normal?

I found a place that does valve bodies rebuilt with sonnax part just down the street just my luck its called valve body builders will be installing tommarrow will see if this fixes my shift problems that started 3 weeks ago.
Hey guys I was wondering if yous could give me a bit more information on the valve body. I just got an altima 3.5 and will more than likley want to change this part to prevent future tranny problems. My question is. A) what is a valve body??? Is it a part in the transmission or the transmission it self. And B) Is the Sonnax part one specific part or a whole bunch of different parts. I will be inquiring about prices on this mod soon and dont want to sound like i dont know what im talking about. Any help would be great.

Thanks in advance

Dave
 

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Dark knight
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328 Posts
Discussion Starter #19
Hey guys I was wondering if yous could give me a bit more information on the valve body. I just got an altima 3.5 and will more than likley want to change this part to prevent future tranny problems. My question is. A) what is a valve body??? Is it a part in the transmission or the transmission it self. And B) Is the Sonnax part one specific part or a whole bunch of different parts. I will be inquiring about prices on this mod soon and dont want to sound like i dont know what im talking about. Any help would be great.

Thanks in advance

Dave
valve body is part of the transmission, it controls the fluid that changes gear

sonnax parts is a bunch of different parts

this is a valve body with sonnax parts listed below
Valve Body Builders - Remanufactured transmission valve bodies that meet or exceed OEM specs

the best way to prevent transmission problems would be drain and refill your transmission with matic k dont let your fluid become black and add a tranny cooler
 

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110 Posts
valve body is part of the transmission, it controls the fluid that changes gear

sonnax parts is a bunch of different parts

this is a valve body with sonnax parts listed below
Valve Body Builders - Remanufactured transmission valve bodies that meet or exceed OEM specs

the best way to prevent transmission problems would be drain and refill your transmission with matic k dont let your fluid become black and add a tranny cooler
Hey man I know this is a super old post, but I just wanted to let you know (if you didn't know already) That 1 yes that valve body will fit, 2 don't spend money on a rebuild just yet after talking with Level10 today he said he rarely sees this 5AT needing a rebuild or any work for that matter. What happens is this valve body starts to go, and causes the transmission to slip and have problems (especially between 2-3) This happens to ~90% of Nissan transmissions with this VB, its an electronic failure and has nothing to do with the physical transmission. Level10 has had a number of cars go over 300K after getting the valvebody fixed. They also sell about 3 valvebodies a week. Its dirt cheap, its $650 at first, but when they get yours in the mail they reimburse you $500 (the 650 is if they get a broken valve body). so $150 for what feels like a new transmission? Do it, no question, everyone should and its not even that big of a deal
 
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