the Auto box

[vodkashots]

Well im on my way to do a auto box swap on Saturday, and was just wondering why the auto fails so much? and why its a waist of time getting it sorted out (im on about professionally and not by some cowboy who says they can do a gearbox rebuild but only changes the fooked part and it ends up going again a few months later down the line)

 

What im interested in is, does anyone have a walk through, or is there a walk through of a auto strip and rebuild to do with what parts do what inside?

 

Its about the only item i haven't taken apart to have a nose inside off.

 

Seems to be a few posts scattered around and all of them, when the gear box goes in varying degrees, the answer is always the same 2, either change the box for another known good one, or go manual.

 

Surely there has to of been someone (jeff :lol:) who has taken one apart to find out whats going on? and surely not all of them can be only good for the scrap pile once it fails in one of many mysterious ways.

 

So, whats everyone's thoughts on this? or shall i just take a knackered one apart and see whats what my self? lol

[zedwizz]

Its not as hard as you might think. Everything you need to know is in the Nissan workshop manual and all the parts are available. If you can work methodically, have a clean working area and can use a vernier i'd say have ago yourself.

 

Martin

[Anthonyd]

Make some notes as you can do mine if you like, I've done one so between us recon could be done in under a day!!

[vodkashots]

Well, the idea wasn't to have a go at fixing one, as if it failed it will be a bit of a waist of time getting it on and off and back on the car again, it was more interest in why so many auto boxes end up as scrap, and what the most common failure point is on them, from what I've read so far, it seems to be the gear change selonoid (or something like that) that seems to fail first

[big_jim]

Once its off and the cars back on teh road, take it apart in your own time and have a look.

If its got to be scrapped, so be it.

[vodkashots]

Once its off and the cars back on teh road, take it apart in your own time and have a look.

If its got to be scrapped, so be it.

 

Always worth having a nose about, I'll get some pictures When doing it as well, might help shed some light on why the auto box is a common failure point, always been interested in the why. Suppose there really is only one way to find out

[big_jim]

Fight!!!

[vodkashots]

Lol

[mantav8]

Usually piss poor maintanence is the primary cause for failure,oil and filters not changed etc.As for repairing them,it's a specialist job with many special tools needed but I reckon around 90% could be.

The problem is at around £2-2.5K for a rebuild it's just not viable.

[vodkashots]

Usually piss poor maintanence is the primary cause for failure,oil and filters not changed etc.As for repairing them,it's a specialist job with many special tools needed but I reckon around 90% could be.

The problem is at around £2-2.5K for a rebuild it's just not viable.

 

True, cheaper to just convert to manual and not have to worry as much

[Big Rod]

It may be that the failure point isn't as monumental as the general concensus feels.

 

Autos are a real 'black art' to many, but in fact hey're actually quite a simple concept.

 

I went to an auto' transmission specialist in Leighton Buzzard once with a Senator 24v auto, (Vx dealer in Luton didn't even know what a Senator was but that's another story!!) expecting a huge bill.

 

The receptionist who I spoke to beforehand diagnosed the fault from what I told her and they hauled the guts out of it, tested then repaired the offending solenoid before knocking it back together in under three hours and the most expensive thing was the fluid! It wasn't cheap, but beat the sh!t out of the price of a recon' box.

 

Worth a nose IMO. They might just need the bands tightening to get another 100k out of them!