Here's a real simple one. How do you flush all of your transmission fluid???

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85T/A 305/QJ work in progress.

 

u really cant do it all in one sitting.
draining the pan will only get u about 4 quarts, there is another 6 or so in the converter.
some garages have a maching they hook up to the trans lines and they can flush it all out at once, but then they wont chage the filter.
what I would do is drop the pan, fill it back up, run it for 20 miles, then drop the pan again.

 

I believe you can do it by yourself, without any special tools...

1. Drop the pan, change the fluid & filter, put the pan back up

2. Unhook the return line (from the factory cooler) at the trans, use a hose to lead it into a bucket. Use an empty quart of oil (filled with water) to mark "1 quart, 2 quart, etc" on the bucket... don't forget to dump the water out when you're done!

3. Remove your trans dipstick, put a funnel in there.

4. Start the car (stick in park). The engine will spin the TC, which spins the fluid pump, and fluid will get pushed thru the trans, thru the cooler, and get dumped into the bucket.

5. As the bucket fills, you pour new trans fluid into the trans to "match" what the trans spills out

6. When the bucket starts getting "clean" trans fluid, shut the car off.


[edit] This will work, right? Or, no?


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-Tom P (Hot rodded 1986 Firebird 2.8l)

[This message has been edited by TomP (edited November 20, 2001).]

 

there is no way your going to be able to pour fluid down the dipstick as fast as it pumps out.

 

Yes, you can. The cooler line is 1/4", and at an idle, the pump isn't pushing all that hard.

I've been doing what Tom described for about 15 years. It is also the method recommended by AMSOIL ( http://www.amsoil.com/faqs/faq8.htm ).

Tom did abreviate a little. Note that you should refill the pan with new fluid before you disconnect the return line and start the engine.

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100 bucks at Jiffy Lube and they'll do it professionally.. this includes the price of a whole ****load of tranny fluid...

Basically they hook a pump up to the collant lines in the front of the car, the pump pushes clean fluid into the trans...

They put a new filter in, put pan back on...

Start pump, start car...

Run the car throughout all the gears for about 5 minutes... when the fluid runs clean they shut the whole process down, make the fluid level right and you're off... They'll even do it right infront of your eyes if you'd like.

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1985 Camaro SC - 2.8L, auto.

C'mon, spin 'em for papa...
http://www.xenodrgn.f2s.com/Frontright.jpg

 

Those machines do not replace your fluid. It reconditions it. If you have burnt fluid, they will not hook up to your car. The idea is to finely filter all of your fluid and then the machine adds "additives" to the fluid. I haven't seen one that will actually "replace" all of your fluid. Still a good idea though.

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South East Thirdgen

1987 Trans Am 305
14.88 @ 92.81

 

GM, I know the part about hooking up to burnt fluid... but I was under the assumption that it flushed 20 quarts of fluid through the system...

I havn't had it done personally, more like hearing from a friend of a friend...

 

Sounds simple enough. Which is the return line?

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85T/A 305/QJ work in progress.

 

700R4- Top Line. I have done this a little differently. I put a gauge on to check tranny operation, then I take the head off of the gauge and put the hose in a bucket while a run the car and add oil.

 

wut if u put the return line in a bucket off clean fluid, and the hose going To the cooler in an empty bucket. wouldn't that work???

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- David
88' GTA 5.7L TPI MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass, Gutted CAT, Flowmaster 80 Series Muffler added to Unkown CatBack, Ported Intake

http://www.geocities.com/david_angel_16

 

No it wouldn't since the return oil is used for lube, it essentially just drops into the tranny, instead of being drawn in.