its a 91 toyota corolla..
the fluid is brown to black
it is very thin. if i replace it with new stuff will that harm the seals etc?
or can i drain half and add half new to half old?
i read a few posts about it and tad on the fence..
i want to replace it as its seems its not doing its job.. too thin and old.
just need some guidance in the right direction...
Last edited by Plasma_Jet; 04-20-2010 at 05:36 PM.
if the fluids that bad you should get a flush that way you don't have that old fluid left in the cooler lines, valve body and all that, replace the filter(s), and fill with atf
the thin fluid could lead to excessive friction in the clutch packs and cause them to wear prematurely
if the fluid is watery thin then that might be a sign of a leak in your trans oil cooler
harming the seals probably won't happen if you use atf or whatever toyota recommends
Last edited by canadianae92; 04-20-2010 at 06:26 PM.
As far as I know, the only thing that may harm trans seals are additives like Stop Leaks and such. Some actually expand the seals to seal better, but what if some seals are not meant to seal completely. And those with solids that suppose to clog a leak, what about small valves.
New ATF fluid shouldn't hurt anything as it is a recommended maintenance on most vehicle at a very high mileage interval. My LTI instructor told me if you don't have to, don't. In your case, I would.
Black = No good lol. Usually means all the good protective additives are worn out and the fluid is burning. You should deff do it the right way and take it somewhere to get it properly flushed, might be a little expensive around $100-150 depending where you go, but it will save you money in the long run as long as it still works good now.
I flushed my tranny around 70k with no I'll effects.
Most of the worry about this comes from American cars where for some reason a trannyflush can and usually does kill the tranny. On the ford forums it is known that if you flush you'll be buying a new tranny shortly.
This is not the case with Toyota thankfully.
ok sounds good.. so now i am attempting to do this myself and i have a vague idea what im looking for..
any photos?
tips? suggestions?
i am not sure what i am looking for under car should be hax type cap or inverse hex cap of some sort.
do i need to remove the oil pan? or no?
i plan on take alot of photos when i do this... seems alot of poeple want to do this but dont know what to look for.
Even if there is a drain plug i would just drop the pan because you also want to replace the filter and see if there is any metal flakes or chunks in the pan and you want to see the amount of clutch material is sitting in there, and also i really strongly recommend just either flushing the system yourself by borrowing a machine to do it or getting a shop to do it.
sounds good, i think i can borrow a machine and flush it.
anything special need to be done?/ or just flush check magnets and re fill?
will keep ya posted.\\
basically yea
start the car with the flush machine on and fitted and just leave the machine on till its empty then let it all drain out, clean the pan and take note of whats in it and on the magnets, use a new gasket and button the pan up then fill it up. Put like 4L in and turn it on and let it idle in park or neutral(it should say on dip stick or in owners manual what gear to check the auto trans in).... after its full then go through the gears and check it again and top it up if you need to.
also break open the old filter to see if there is any metal pieces or anything
On the ford forums it is known that if you flush you'll be buying a new tranny shortly.
This is not the case with Toyota thankfully.
That's funny because I work at a ford dealership, and I know Ford them selves recommend flushing the transmission at certain intervals for all of their vehicles. Actually it's worse to just do a filter change and mix the new fluid you're putting in with the rest of the bad fluid that's in there. You wanna keep the fluid consistent, and flushing it puts 100% brand new fluid in rather then mixing old/new.
That's funny because I work at a ford dealership, and I know Ford them selves recommend flushing the transmission at certain intervals for all of their vehicles. Actually it's worse to just do a filter change and mix the new fluid you're putting in with the rest of the bad fluid that's in there. You wanna keep the fluid consistent, and flushing it puts 100% brand new fluid in rather then mixing old/new.
Honestly I only go to the crown Vic/grand marqui/merauder forum so icant really speak about other fords or newer ones. All to often there is a thread started by a newb with the title "just had ford flush tranny and now it's acting funny". These threads always devolve into people chiming in telling the op that they did the same thing and very shortly after needed a new tranny. My marqui's tranny acts funny all the time but I won't flush it or clean it because she is a tempermental beast.
My ae92 is older and has more miles the tranny shifts flawlessly and I've never heard of anyone blowing a tranny on this gen with a flush. I've had 3 ae92's all auto's ranging from 65k-278k miles and they always acted positive after fluid flushes. This is why I posted what I posted.
Something to also consider, if that is the 3 speed tranny, the differential is sperated from the transmission, it has its own fill and drain plugs and its own ATF, I would consider replacing this as well. the fill plug is on the back side facing the fire wall, the drain plug is on the bottom. It uses the same Dex II (or above) ATF
FORD - FIX OR REPAIR DAILY... FOUND ON ROAD DEAD...
Toyota just keeps going... literally.
I never heard of any problems coming from changing out the trans fluid in the AE92 tranny either. I did it months before I did my swap, new fluid and filter, ran FINE! I had a leak in a trans cooling line that went to and from the radiator that leaked. So, I changed all the fluid, too.
I was in the same boat as you last year. I bought a 92 with the 3 speed auto. The car had 248k miles on it, and the fluid looked like used motor oil. I was advised to just drain the pan (it has a drain plug) and to refill with new fluid. I did this and drove around for a couple thousand miles, and repeated the drain and refill again. My fluid looks alot better now.
The reasoning behind this is an abundance of new detergents all at once could clean up any varnish/sludge/dirt which could plug one of the tran's coolant lines. this would burn the damn thing up. Had this happen once to an old car of mine. I am at 263k miles now and will be doing the drain/refill proceduare again.
next up - I'll be replaicing a 120k+ mile old timing belt.
__________________
1992 Geo Prizm Red
248k miles on it so far 9/9/09 and still in great shape!
4AFE engine, A131L 3-speed auto trans
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