Hello folks,

I have been reading all the posts regarding auto transmission
problems and did not find anything like this.

Here it goes:

The transmission is working perfectly while the car is moving,
perfect shifts.. perfect timing, and a lot of power whenever I need it with no hesitation at all,HOWEVER. . several times a day,
while making a complete stop (semaphores, for example) the transmission downshifts properly.. all the way down to Neutral.

Then.. I begin to accelerate, very gently... it starts increasing
RPMs 1000, 1500, 2000, nothing happens... 2500, 3000 RPMs and
then BAM ! ! ! ! the transmission kicks in... and the max starts
moving burning tires and everything...

This "BAM " (tranny kickin in) is so hard, that the rear engine
mount is totally wasted now... (the engine mount thatīs located between the engine and the cabin)

Would it be necessary to have this transmission totally rebuilt ?

Iīve heard that if you do so, it will never be the same (will
never shift like the original, untouched carīs tranny)

Please comment,

The BrazilianMax

 

Do you have an Engine light "ON" in your dash? If you have one you can check the codes in your car to make troubleshooting easier.

As for fixing the transmission, if you take it to a place specialized in transmissions you should have no problems.

 

No. . no check engine light lit.

The Nissan Diagnostic computerīs A/T test says that
everythingīs fine with the tranny.

The BrazilianMax

 

Your tranny has a mechanical problem. Sticking shift solenoid or something of that nature. The A/T controller probably isn't going to pick up things that fail mechanically. Could be just an issue with your valve body, but a transmission shop will most likely just do a tare down and rebuild for you. If you could find another valve body in a junk yead, try swapping it with your to see if the problem goes away.

 

No man . . . there are only 10-20 Maximas in this country . . . =(
No yunk yards..

Do I have to rebuild the whole thing just to check the solenoids or valves ?

Regards,

BrazilianMax

 

Once you have mechanical failures going on it's time for a rebuild.

 

Yeh.. I think you need a rebuild to. I have seen this before in cars that had a fluid leak and burned up some of the clutchs inside the tranny.. Rebuilds run from $400-$900 here in the US... But you might be able to get a used tranny cheaper.. Not sure where you will get one but here in the US they g o for $400.

 

hey whats up i have an automatic trany with only 5k original miles from a 1997 email me back im from ny

 

This may sound stupidly obvious but check your transmission fluid level. If it's low you can get issues like that. I used to on my old automatic VW. If the level is fine, I would have to agree with the others here that the shift solenoid is likely going out. That unit is replaceable without having to remove/disassemble the transmission, though, and I don't think it cost more than a couple hundred $. Have the car looked at by a mechanic. They should be able to diagnose it whether or not they have Maxima experience.

 

I agree with njmax. It sounds like a stuck solenoid or valve in the tranny causing shifting problems. The problem comes in that if it's either it was probably caused initially by something else tearing up and sending metal shavings thru it in the first place. For example, the torque converter could have burned up a bearing and sent metal thru the VB and caused a sticking solenoid. You could also have worn out the clutch pack(s) or band to send also metal shavings thru the tranny. Finally, it could be as simple as a bad solenoid to begin with if neither of the other two things happened.

It is difficult to trace the source, but you definetly have a mechanical problem. As most of you guys know, I have had tons of probs with my auto tranny that I have slowly been trying to get a handle on for the past year, so trust me it's not fun. Depending on your milage, you may be better off getting a full rebuild and be done with it.

 

Hi,

When I purchased the car, I noticed that the AT fluid level
was stupidly high, there was also this terrible smell of fluid
and who knows what else burning...

I guess that they put this excess fluid to "hide" the problem
or something. . . A new tranny costs around USD 3,000. I think
Iīm gonna have them rebuild it. Itīs still under warranty, and they
should pay for everything.

Now another question. . . From those who have had their
transmission rebuilt.. what should I be aware of when I get
the car back ? What should I expect ? or how to really test
after they finish rebuilding it?

Regards,


BrazilianMax

 

Your tranny should shift and run the same way as it did when it was new. In other words, unless you do a VB mod or change something in the hardware dept. you will not see any major performance gains. You will notice better shifts, but that is probably due to you already being used to bad shifts for a while since the tranny is messed up (mind trick). After a real full rebuild, your tranny should shift as a new one would.

 

Thanks Jaime,

The car has 77 Kms on it (About 48000 Miles).
I didnīt even want to open the tranny, because
they said it would never "feel" like the original
again.

Regards,

BrazilianMax

 

That's incorrect, opening the tranny by itself will NOT cause your tranny to feel diff unless you change something. Taking the pan off and see if you see excessive shavings on the magnet that's attached to the pan. If so, you have a mechanical prob; if not, you will probably find some kind of flow issue.

 

if it's under warranty, don't open anything. they might invalidate your warranty. Have them rebuild under warranty and see what happens from there. You might want to be there when they take it apart and you can see for yourself if there are shavings in the pan or not.

 

Curious,

Does anyone know if a 97' auto will bolt right up to a 95 auto with no modification?

JP

 

Hello Folks.

Just wanted to share with you my experience on how this problem was solved.

Aparently, I had hit a bump or something real hard and bent the tranny cover (sorry, donīt know the English word for that part). There was not enough oil pressure for the tranny because of this and that is why it was having a hard time going from N to 1st gear.

All we had to do was repair the damaged cover ! (less than 20 bucks and no need to rebuild the tranny at all!! ). This repair was made about 3 months ago, and the problem never came back !

Regards,

BrazilianMax

 

good job, i'm glad it worked out well for ya!