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View Full Version : Flushed a tranny?



yann89
17-07-2007, 03:57 PM
Hey all,

looking into buying a V6 Engine and transmission that will need to be flushed before it's bolted in.

Just wondering, anyone every done this before? I'll be doing it myself, so I'd need someone who knew how to do it to let me know.:)

How long should it take me to do with the trans off the engine?

Thanks,
-Ian

[TUFFTR]
17-07-2007, 04:00 PM
By the way its an automatic

yann89
17-07-2007, 04:04 PM
hehehhee...shush man...i forget these things.

veradabeast
17-07-2007, 04:43 PM
As far as I know, the only way to flush the transmission is with the engine running, ie. installed in the car.

yann89
17-07-2007, 07:12 PM
c'mon, no-ones flushed a 3.0L Auto transmission before? there's got to be someone on here!

veradabeast
17-07-2007, 07:46 PM
I did it to my KR.

yann89
17-07-2007, 07:55 PM
BTW, clear out ur inbox...lolz

how did you do it on your KR? Did u do it yourself? of did you send it off to get done? if you sent it off, you remember how much it set u back?

veradabeast
18-07-2007, 04:05 PM
BTW, clear out ur inbox...lolz

how did you do it on your KR? Did u do it yourself? of did you send it off to get done? if you sent it off, you remember how much it set u back?

Inbox is better now.

When I did it to my KR, I put it up on ramps and stands, pulled both hoses off the bottom of the radiator, stuck them in a bucket and ran the engine while my brother constantly poured fluid in from the top. Pretty straightforward, just watch it until the fluid coming out becomes the same colour as the fluid going in. I used 10 litres to flush, and another 9.5 odd to refill, and I fitted a trans kit (filter, sump plug, pan gasket) at the same time, while the box was empty.

The shop that did my twin pistons offers a trans flush for $450, my local mechy doesn't believe that transmissions ever need flushing, and Mitsubishi wanted an ungodly amount.

I did mine for just over $200. Some people will say that flushing it is overkill, but the transaxle was so much smoother afterwards I'd say it was worth it.

andrewd
18-07-2007, 04:09 PM
I did mine for just over $200. Some people will say that flushing it is overkill, but the transaxle was so much smoother afterwards I'd say it was worth it.

Mitsubishi quoted me $230 to have the awd flushed

Trans place quotes $200 for power flush (20L flushed through the trans) then fuilled using the correct fluid

and thats in a 3rd gen AWD

yann89
18-07-2007, 04:40 PM
Okay here's the problem as described by TUFFTR.

gear slip when changing. between gear one and two, the engine revs out then clunks into gear. only when cold. when warm, the engine runs fine.

My dad's told me that it's probably the rings inside the gearbox that re screwed and ned replacing, which is basically a new gearbox.

any comments anyone?

veradabeast
18-07-2007, 04:52 PM
That means that the clutch packs are slipping, ie. worn friction material. Much like a slipping clutch in a manual. It's a rebuild job though.

yann89
18-07-2007, 05:09 PM
damn...eff rebuilding it...might as well look for a new box?

veradabeast
18-07-2007, 05:25 PM
If you can find one. Either that, or look for a very low k used gig. I put a 2nd hand box (had about 100 thou on it) into my KR, it hardly ever slipped, only when I smashed the car or sat in traffic for too long.

MicJaiy
18-07-2007, 07:30 PM
Have you tried the PDF workshop manual.

Very helpful

[TUFFTR]
18-07-2007, 07:34 PM
It does NOT need a rebuild. Only a flush.
Slips When cold, Fine when warm. thats it. Just to clear that up...