I've had the dreaded wave spring go through my auto gearbox and make mince meat out of most of it.

To get me by for now - am looking to just pick up another box from the wreckers / private sale, hopefully will get me through another 6-12 months before the car gets traded in for something newer.

Car is a May 2002 TJ Advance (3.5L V6) with 4sp Auto (not tiptronic). Apparently they are the F4A51 boxes. However, upon ringing around some wreckers - apparently there are several types of F4A51 boxes for 02 TJ Magna's, and I need to get the complete box number off it.

Should be something like F4A51K2B5B JX2034 as an example.

1. Where on the actual box will this number be?? I can't seem to see it from the top side at the moment.

2. What other "model number" gearboxes will actually fit into the car?

3. Does anyone have a 2nd hand (non rooted) box they want to sell?? Don't mind paying for freight/postage - gotta get the car back on the road.


--Mark
InsaneMagna

Perfect time to swap in a 5 speed and fall in love with your car, mate.

1. Where on the actual box will this number be?? I can't seem to see it from the top side at the moment.

The gearbox number is inline with the filler neck, about 4 inches towards the firewall and directly on top of the box. It's almost directly under the left hand edge of the airbox.

Hope that helps you.

Perfect time to swap in a 5 speed and fall in love with your car, mate.

Would, but the missus only has an Auto licence :(

It's ok though... the play car is Manual ;)

The gearbox number is inline with the filler neck, about 4 inches towards the firewall and directly on top of the box. It's almost directly under the left hand edge of the airbox.

Hope that helps you.

Excellent.. Thanks for that :) Will check it out tomorrow.

3. Does anyone have a 2nd hand (non rooted) box they want to sell?? Don't mind paying for freight/postage - gotta get the car back on the road.


--Mark
InsaneMagna[/QUOTE]
PM Madmagna he has a few auto boxes at his place.

Cheers

Does anyone know how to tell just from the box number what exactly it is? 4/5sp, tiptronic, date etc? Ive seen translations of VIN numbers etc, is there one for gearboxes too?

Would, but the missus only has an Auto licence :(
That's cool, we do 5 speed Autos too.

As Magna diver said, send a PM out to Madmagna for a new box in either 4 or 5 speed guise.

Cheers, is the last one with the AWDs supposed to be auto not manual? W5A51

Yeah...cut and pasted the wrong line. Fixed now ;)

TH / KH

4 speed auto F4A51 is used for the following : Exec, Advance, Sports, Altera LS, Verada Ei, Verada Xi

5 Speed manual F5M51 is used for the following : Exec, Advance, Sports


TJ / TK / Ralliart

4 speed auto F4A51 is used for the following : Exec, Advance, Verada Ei, Verada Xi

5 speed auto F5A51 is used for the following : Sports, Ralliart

5 speed manual F5M51 is used for the following : Exec, Advance, Sports, Ralliart


TL / KL

4 speed auto F4A51 is used for the following : ES, LS

5 speed auto F5A51 is used for the following : VR, VR-X, Verada Ei, Verada Xi, Verada GTVi

5 speed manual F5M51 is used for the following : ES, VR, VR-X

5 speed auto W5A51 is used for the following : LS AWD, VR AWD, Verada Ei AWD

Saving a seperate thread -

Any idea which model is F4A5 AK1 A1Z tranny from? I got a second hand box (just in case my current box breaks down) last year from a hail damage Magna and the owner was saying it was a TL. The tranny has the number F4A5 AK1 A1Z itched on it.

If I get a 5sp Auto box (F5A51) - will this go straight in to my TJ? or is there other parts I need? Is the shifter the same? Anything else I need to buy/procure to make it work? Will *any* F5A51 box do, or will I need specific one?

OK for starters I have transmissions here starting from a reco by mits 4sp auto down to low mileage 4sp autos, contact me if interested

Now, if so far as the above info goes, not bad but not quite right or complete

Will try the KISS theory here to stop confusions

From the TJ onwards *there is no such thing as a TK

They had either 4 or 5 speed auto boxes depending on the range/option

The 4 speed tiptronic and non tiptronic are the same box, just the ecu and shifter control that differs

The thing most do not realise is that the TL onwards had a different output shaft sensor ring and CAN NOT be used in a TJ just as the TJ one can not be used in the TL so if you want to replace your trans, you need one from the model you currently have

The id number on the trans will have the first 5 numbers set up as the general model number however the following numbers are also important unless you know what your new trans came out of and is going into

I have set up a couple cars with 5sp autos in them now, you need at min the ecu, engine harness and tiptronic shifter, remember that all 5sp autos had trace control, if this is not plugged in you have a host if issues, I have been able to step around this on one car so far, was a PITA but was doable however I would not recommend this to someone who does not know how a Magna works down to the last screw

And to the above question, no you can not get just any 5sp auto, you need to have the one to match the ecu you intend to use in your car

I have been fairly breif above, could write pages on how all this works and the ins and outs

Saving a seperate thread -

Any idea which model is F4A5 AK1 A1Z tranny from? I got a second hand box (just in case my current box breaks down) last year from a hail damage Magna and the owner was saying it was a TL. The tranny has the number F4A5 AK1 A1Z itched on it.

That is the TL onwards one and will not run in a TJ or earlier, they changed the way the speedo gets its signal from the speedo drive to the output shaft ring and then compensated by adding teeth to the output shaft. The ecu will read the speed of the input shaft, then the output shaft and if it detects a difference out of range, will go straight into limp mode as it will think the trans is slipping etc. This is the exact effect you will have in putting a TL trans into a TJ or earlier

Now, if so far as the above info goes, not bad but not quite right or complete

Will try the KISS theory here to stop confusions

From the TJ onwards *there is no such thing as a TK



Fixed my typo.

OK for starters I have transmissions here starting from a reco by mits 4sp auto down to low mileage 4sp autos, contact me if interested

Now, if so far as the above info goes, not bad but not quite right or complete

Will try the KISS theory here to stop confusions

From the TJ onwards *there is no such thing as a TK

They had either 4 or 5 speed auto boxes depending on the range/option

The 4 speed tiptronic and non tiptronic are the same box, just the ecu and shifter control that differs

The thing most do not realise is that the TL onwards had a different output shaft sensor ring and CAN NOT be used in a TJ just as the TJ one can not be used in the TL so if you want to replace your trans, you need one from the model you currently have

The id number on the trans will have the first 5 numbers set up as the general model number however the following numbers are also important unless you know what your new trans came out of and is going into

I have set up a couple cars with 5sp autos in them now, you need at min the ecu, engine harness and tiptronic shifter, remember that all 5sp autos had trace control, if this is not plugged in you have a host if issues, I have been able to step around this on one car so far, was a PITA but was doable however I would not recommend this to someone who does not know how a Magna works down to the last screw

And to the above question, no you can not get just any 5sp auto, you need to have the one to match the ecu you intend to use in your car

I have been fairly breif above, could write pages on how all this works and the ins and outs

Awesome stuff Madmagna!

So. Whilst I am good with Electronics, and Mechanics, I think I will just stay with a TJ 4sp Auto box. Will PM you in a bit about possibly getting a box off you.

That is the TL onwards one and will not run in a TJ or earlier, they changed the way the speedo gets its signal from the speedo drive to the output shaft ring and then compensated by adding teeth to the output shaft. The ecu will read the speed of the input shaft, then the output shaft and if it detects a difference out of range, will go straight into limp mode as it will think the trans is slipping etc. This is the exact effect you will have in putting a TL trans into a TJ or earlier

That is the news I was trying to avoid :(. Is there anyway to get it around like getting a shaft sensor ring/ECU from TL and replace in TJ? Mine is TJ II if that helps. Many thanks Madmagna.

There is no reason you can not run the TL ECU provided is an es or ls as can not have traction control as you do not either

I have TL ECU packs here but at the end of the day is it worthit to go to all that trouble given that a trans is not really worth all that much lol, a ecu pack will set you back $350+ with keys etc and box rebuild more

There is no reason you can not run the TL ECU provided is an es or ls as can not have traction control as you do not either

I have TL ECU packs here but at the end of the day is it worthit to go to all that trouble given that a trans is not really worth all that much lol, a ecu pack will set you back $350+ with keys etc and box rebuild more

That makes sense and thanks for your feedback. I will see if I can sell the TL tranny box I have got as a spare in my shade and get a TJ one from You instead. ll get in touch with ya soon.

That is the TL onwards one and will not run in a TJ or earlier, they changed the way the speedo gets its signal from the speedo drive to the output shaft ring and then compensated by adding teeth to the output shaft. The ecu will read the speed of the input shaft, then the output shaft and if it detects a difference out of range, will go straight into limp mode as it will think the trans is slipping etc. This is the exact effect you will have in putting a TL trans into a TJ or earlier

How about the reverse? i.e. if the dreaded wave spring should fail in my 2003 TL 4sp auto box, will I be able to replace it with a TJ/TJ-II 4sp trans sourced from a wrecker (presumably there are more TJs to pick from than there are TLs)?

On a side note, do we know if any Magnas/Veradas actually left the factory with the more robust spring that does not break up?

Cheers,
Aj

I can say that my TW LS has TCL fitted as a standard feature.

AFAIK the gear driven sensor deletion was effected from 01 July 2001(Aug 2001 series 2 TJ spec). This is definitely the case on MMAL exported models.

Also from recent experiences, MMAL do not reco boxes (certainly not for wty cases) but are done by Fluid Drive to MMAL specs. This is what I was told from my dealer. Interpret the " MMAL specs " as you desire but I had quality issues with all three fitted. Maybe I was just unlucky.

Say you were unlucky as Fluid Drive have done these under contract for mits for many years and have had some very good transmissions through here over the years.

The TL was the first to make this change, ALL TJ had the older speedo drive gear set up

How about the reverse? i.e. if the dreaded wave spring should fail in my 2003 TL 4sp auto box, will I be able to replace it with a TJ/TJ-II 4sp trans sourced from a wrecker (presumably there are more TJs to pick from than there are TLs)?

On a side note, do we know if any Magnas/Veradas actually left the factory with the more robust spring that does not break up?

Cheers,
Aj

The Real late TL onwards had the better spring as did the TW

My trans guy here does from time to time grab a few transmissions for a freshen up, am about so send a new batch to him, he checks them all internally, replaces any required clutch packs, spring and seals. He has commented on the last batch which had a few TL and TW ones that some of them had the revised spring, when I looked at what cars they came from found that the last of the TL were the first of the revised ones

when I looked at what cars they came from found that the last of the TL were the first of the revised ones

Did you by chance note just how late in the TL series the 'revised' spring was fitted?...was it noted on the auto box I.D.? Mine is a 07/04 TL. Thanks.

hello this is my first post in the wonderful aussie magna club forum,
I have a 2001 TJ magna advance and after a lot of research online and speaking to a whreckers i have decided my box is toast, driving fine then all of a sudnen no forward drive gears and no reverse also no limp homemode which i would of been greatful to have. after checking the colour of auto fluid which is obviously dark in colour not pink or red not even really a hint of red or pink in colur i think ive made the conclusion that the pressure plates are stuffed or maybe oilpump, either way i need to replace the entire box as its going to be a project for me to take the old one out and install a replacement.
now my question is and i realize the box numbers must match my box number is F4A51K2B5B and then the line under that on the box is MW8081
can someone please explain what the seacond line is and is it nessecerry to have top line and seacond line match or does it just need to be the
F4A51K2B5B that needs to match? if so can someone please tell me what the seacond line of code represents ie MW8081 code .