i thought ide start a new thread so as not to confuse.

the other week while accelerating hard on a country highway the magna tranny slipped for the first time when going from 3rd to overdrive at about 85 km. was very violent because it lost all power for about 3 seconds then SLAMED into over drive. it actually pinned me and the passenger back in our seats.

it then behaved its self till yesterday when it started to slip intermittently all through the range. but especially 1st to 2nd. checked fluid and its full and cherry pink. not burnt or discoloured at all.

this morning i moved the car fine out of the drive way to get the other car but when i came back home a few hours later it would barley move. seeing as i was on soft grass at first i thought i was getting bogged but then it lost all drive and sat then it would jerk backwards a foot or so and stop, wait a few seconds and do the same. same problem in drive. no matter how many revs you gave it it would sit there then jerk about a bit then move a foot and jam up and whine like a dog. it felt like someone pulled the hand brake on tight them let it on and off.

come back a few hours later to try and get it out of the drive and back where it belongs and it drove perfectly. i went for a drive and really gave it shit but it changed and did everything it should perfectly. held it in 2nd up a very steep hill till i hit about 70 and it changed to 3rd fine then overdrive fine. (when i say fine i mean as it always has. its always a 2 part shift as in it leans into the next gear then when it grabs you feel it but only when you give it stick)

so came home after the flawless drive and parked it. then tonight, about 5 hours later i tested it around the drive (live on a property so its a 100 meter long circle) and it drove good until i went to reverse it back in. same story with the slipping accept when i drove forward for a few meters it was perfect again. ive tried moving the shifter between gears to see if its just misaligned but its defiantly selecting the gears correctly because the revs drop down as normal when you put it in gear, however it just doesn't move.

dont know what the story is. seems like it might be torque converter or pump seeing as its in basically all gears and intermittent. but im no expert.

ill make a video of it doing it and post it on you tube then post the link here to show what its doing.

sorry for the long post but ive tried to add as much info as possible.

any input is very much appreciated!

regards jay.

p.s. i have a 2nd gen box spare but don't want to have to put that in just yet if i don't need to. if its torque converter ill swap them over if they are compatible but im not sure.

I have had similar issues in the past

Mine was simple front engine mount related. As strange as i sounds it caused slipping and over revving issues.
Some other symptoms were poor idle in drive gear when stationary and shuddering when selecting gears from Park to reverse and drive etc...
I never imagined that it could be engine mount causing the issues. Last place i checked. My TR is an old thing which had stock fitted mounts so they were overdue to bereplaced anyway

I am guessing you already checked fluid levels yeah?

Possible that its electrical related and a poor connection somewhere. Have you inspected your wiring to the trans and dizzy? Corrosion buiid up may be a factor, worth a look and check anyway.

Im no expert either. Magna Buff might be able to she more light on what yours is doing.

Let us know how you go.

Cheers

thanks allot for the repply mate,
my front mount is flogged to hell to be truthful and its at in the back of my mind but its always been one of those 'another day' things. it was after i poked around with the selector cable at the transmission and knocked the connectors about a bit that it came good to be honest. ill make sure everything is connected right tomorrow seeing as its late now.

fluid was full when hot yesterday. but the electrical connector or something similar makes sense seeing as i thrashed the hell out of it going up hills and flooring it out of roundabouts trying to get it to slip this afternoon and it wouldn't at all. if it were slipping consistently i would be happy to put the new one in but it seems too intermittent and affects all gears so to me it seems to be too sudden, intermittent and crippling to spell the end of the whole transmission but ive been wrong many a time in the past lol.

thanks again!
regards jay.

drop the pan off and check the filter isnt clogged

you need the pan gasket
count the number of bolts it is held on and thats the gasket you need

you can use an auto filter twice so undo the

four screws and look for metal fragments on the top of the filter

blow the filter with compressed air
refit the filter

clean off the magnets in the pan of all fragments

refit pan
remember to use only mitsubishi tranny oil its cheaper and suits the box

you can save the auto oil and use it again till you get the box working " better'''
check every plug the auto box has for frayed wires bent pins or corrosion

it is possible for the auto TCU is failing
undo the two battery terminals and reset the TCU

your oil pump and torque converter is working if you have reverse and forward gears

this is the link to inspect the end clutch
something is wrong with it
possibly a broken thrust washer the drivers side wheel has to come off

http://www.mirage-performance.com/sonata/Transmission/endclutch.html

its a diy only takes a few minutes to undo the end plate and inspect the 4th gear /overdrive

if it is a TP box there is a fault that causes a bearing to fail in the drive cluster
more on that later if it doesnt improve

the other thing may be the kickdown band solenoid is not working properly

you can get to that solenoid with the box in

thanks allot mate!
tomorrow is hectic but ill at least clean off the connectors and inspect them and the end clutch. i should be able to remove the pan Friday night and clean the filter, magnets ect.

the kick downs have always lagged and are rough but generally happen eventually. ill disconnect the battery over night.

hopefully ill have some more news tomorrow and if it does it again a video that might aid in working it out.

once again i really appreciate it!
regards jay

Your a champ Magnabuff!

The detail you put into your post really is great.

I had not idea that a way of confirming torque converter and oil pump to be ok by simply seeing that revere and forward gears are working.
whilst i have a basic understanding of some Magna engines i fails in comparison to the depth you seem to have.

It was not that long ago my drive shafts needing renewal and i got stuck and you helped then. I havent had an issue with CV's etc since!!

Cheers mate!

first off i have to agree and thank magna buff allot for his help. its always clearly explained and on the ball!

so i cleaned all electrical connections and took the inhibitor switch apart and cleaned that and it still seemed sluggish although it didnt do the same tricks again. just you really noticed when you took your foot off the accelerator.
so as suggested i took the pan off (and managed to save the gasket in one piece. the was in fact very dirty when i drained it even though it appeared fresh on the dip stick. the magnets in the pan were absolutely caked in grimy dust and there was plenty more floating around in there. the top of the filter had heaps of mettal chips about 1mmx2mm big. but only on the top (maybe because the magnets pick it off the bottom?)
so anyway cleaned the filter with petrol (prob not the best thing to use but hey) and compressed air.
slammed it all together with the old fluid and it shifts up and down through the gears much smoother and seems to have eliminated the jolt you got when lifting your foot off the accelerator in reverse.

so anyway looks good for now so ill put a new filter and oil in and see how it goes although with the amount of metal filings in there i don't like its chances. although i doubt its been serviced in the last 100,000kms.

so thanks allot for everyone's help ill keep you all posted.
regards jay

the build up on the magnets and top of the filter is normal
for a box not serviced each year

the stuff is friction material mixed with bearing and metal hard parts
due to thinning oil over age it peels off

a fresh lot of auto oil and a filter should keep the box going for a while

third to thank magna buff, his threads are so easy to follow. thanks magna buff, for the time your saved me.

ok so update time.
changed fluid for new stuff and thoroughly cleaned filter again. put it back together and its 90% although it still slips between gears a bit. also when cold it still wont reverse until you give it 2000 revs. so replaced flogged front engine mount with a mint second hand one for $10. helped gear changes but reverse is no better. still slips between gears but no where near as bad as it was.

so i dont have any more ideas really. i spose all i can do is drive till it stops lol.

i do want a manual to swap, so if anyone has one with a clutch and selector set up ill pay. or swap 2nd gen auto with tcu and wireing loom if thats desired.
only problem with manual swap is mum cant drive manual but she will soon learn if she wants to drive my car lol.

thanks allot
regards jay

just to add to the developing list of transmission hiccups not it makes a very loud whining noise when you take your foot off the accelerator in 2nd gear. over drive also does it under acceleration but that's more a flat spot i think.
so manual is looking more like my only option every day.......

hi mate i have manaul conversion in morwell. pm if interested ecu loom pedals slave and master cyclenders box. doug

that whining noise wasnt in your original posts

on a level place when hot
keep the motor running
cycle through all the gears
put into park
check oil level then

has to be in between the high and low mark

when doing the manual conversion
have a look at the sticky ' manual conversion in this forum
I think the pictures have gone
but the text is helpfull

it does mention welding the clutch pedal in place
Q?
is it possible to sell the tr auto box to fund your conversion

pm sent ,my internet plays game,s if you do not recieve .you try phone 0435865409. thanks magna buff as allways your on the ball doug

thanks guys!
the whining noise only appeared today on the way home after driving about fifty k's. only noticeable in second when going around roundabouts ect when you take you foot off the accelerator and its free rolling. it appeared after a 5 k long stretch of 100kmh road when i slowed. the road was very bumpy so maybe its loosened or bent something?
ill make a you-tube video of driving it tomorrow and post a like to it on here.
i did check the tranny fluid yesterday night and it was on the top hot mark but ill check it again tomorrow.

ive look through the thread a few times and i have a welder and all the tools listed there minus the engine crane. but do have a sturdy shed and a block and tackle. ive swapped boxes in and out of rear wheel drive cars without an issue before so should have the knowledge and patience to do this one.

as to the second gen box i do want to sell it but dont really know where or whats its worth. they are on ebay for around $220. is that a fair price considering i also have the loom and tcu included?

thanks allot everyone!
regards jay

Hi everyone,
ive posted a video on you tube that shows the car driving and its noises. you can hear them if you listen hard but they all came through a bit soft. the link to the video is : http://www.youtube.com/watch?v=q2iiKfua7ow
thanks again
regards jay

there is a planatary gear system that drives inside the box
part of that is the annulus gears.several small cogs in a housing
the main gearbox shaft runs through the lot
part of the transfer drive gear set
noise is similar to the backlash of a worn cogs in the
box when you take your foot off the accelerator

would you like some pictures ?

noise may settle down with the new oil and filter
and more ks on the box or just stay the same

if the box goes bang shifting in reverse its a broken oil pump
if it was the torque converter the box wouldnt drive
not diff whine or cv joints
solenoids seem to be working

pics would be much appreciated!
i did the oil about a thousand k's ago and it still appears to be clear. funny it only does it in 2nd but i suppose it might just be a flat spot or puts extra strain on iot or something. if the new noises arnt going to cause immediant problems ill keep driving it for a while. its more the reverse thing that worries me. ill make a vid of that tomorrow or Saturday.

just seems to be one new noise or slipping problem after another with this box and its all amounting up in my mind every time i go to drive it. but it wouldn't be a true magna without the feeling of pending danger. my mother describes it as the calm before the storm and will no longer drive it alone. its all what makes it such a fun car lol.
thanks allot,
regards jay

http://i253.photobucket.com/albums/hh59/magnabuff/annulus.jpg
thanks for making the video

from the video the noise sounds to be mechanical wear and tear

only other thing might be a solenoid
that operates the second gear in the valve box
http://i253.photobucket.com/albums/hh59/magnabuff/valve_body.jpg
the same solenoids are in the TR box

there is a gearbox diagnostic plug + & - pins
just above the glovebox with the lid open
all you need is an led tester

for now put it and drive and nurse it a bit
gives you time to get set up for the manual conversion

thanks allot for the info magna buff.

Funny thing is yesterday i drove it about 40ks with a car load of people and it did everything it should, include reverse properly without a hitch. However i still dont trust it but for the riving i do ill nurse it as you say and get the manual box and the engine ive got to go in it sorted out and ready to go. should be able to do something in the next week and a half so hopefully within a few weeks ill have it converted.

what would i do to change / repair the solenoid. i suppose seeing as its only momentary and goes away after a while ill never truly be stuck.

thanks again
regards jay.

if the box went ok for 40ks with a load
dont think it will let you down if you nurse it


Info........
you undo specific bolts on the valve body
and it drops down in one piece
to fit the solenoids

there is a small membrane on the base of the solenoid that
opens and shuts the valve to allow oil flow
to different parts of the gearbox

G'day all,
well i certainly had been nursing the old girl the past few weeks and had covered about 500km since changing the tranny fluid and doing filters ect but last night spelt the end.

i was heading through a roundabout and half way through lost all power as if it had slipped into neutral. i pulled over and it was unresponsive in all gears so i stoped the engine, waited a few minutes the restarted it and off we went. same story about 2ks further down the road. seemed to slip into neutral but stoped, restared and after a while it went again.
we went on like this for about ten minutes and 2km till it finally wouldnt go again.

i then reverted to the thump it with a hammer tactics accept all i had was a jack. so after me and my mate pushed it off the road and i belted all shit out of the sump with the jack off she went. i held it in first gear at about 20kmh till i got off the main road. then i tried for second and it changed into second ok. so the further 6ks home i did 60kmh up and down hills hoping it would hold out and it did. got home in the pitch black at about 9pm.

so pulled the tranny out this morning and found the everything inside was thickly coated in metal particals. there were also allot of large chips in there too. so im unsure what it was but its certainly never going to drive again on that box.

but the magna didnt leave me stranded! even though it was making all sorts of raw grinding noises it still didnt give up. only shows how decent these cars really are lol.

so any ideas on what it is. i will do an autopsy and see whats going on inside so others can know what caused the issues but it was driving great yesterday morning. did about 50k's in the morning.

thanks allot,
regards jay

My first Magna, a TM, sometimes used to lose all drive in roundabouts or other sharp left-right turns in quick succession. Then the power would come back on again with a bang. I figured it was because the centrepital force in the turn pushed all the oil in the transmission over to one side, so it ceased to drive. Then when the car straightened out, the oil settled down and allowed it to transmit power again.

At first I thought the transmission oil level might be too low but it definitely wasn't. Mine did not break down but I was worried that the stress might break something. It never did. I learned to take it very easy when re-applying power after a roundabout or sharp turn.

Neither of my TPs do it. Maybe they have baffles in the transmission sump.

thats a very good point. in the end i think it was just the filter was so blocked with mettal bits and pieces it could not pick oil up anymore. not so much mechanical falure from what ever was grinding away in there although with the ammount of metal particals in there it couldnt hve been far off.

i thought of cleaning the filter and seeing if it would go again for shits and giggles lol.

ill strip it down after i finish the manual converstion and give everyne a vertict as to what was causing the problem .

thanks allot!
regards jay