auto Tranny

[Kane112]

How do u do a tranny flush on a 1989 240??? What needed?? Also anyone recommend good tranny fluid??

Cheers,
Kane

[racepar1]

You need a trans flush machine, which costs a couple thousand dollars. Bottom line take it to a shop. You CANNOT just disconnect a cooler hose and keep filling it up through the dipstick as the cooler oil passage feeds pretty much the whole trans. As for fluid it should just take regular dexron ATF.

[240tek]

It depends what you define Tranny Flush, with this I mean are you going to completely flush the tranny with pressure or do it yourself by draining the fluids and replacing with new fluid?

For DIY, check the fluid first. fluid color can help determine issues, I pulled this description of colors off familycar.com/transmission : "Most manufacturers require that you check transmission fluid levels when the vehicle is running and on level ground. Pull the transmission dipstick out and check the fluid for color and odor. Transmission fluid is a transparent red oil that looks something like cherry cough syrup. If the fluid is cloudy or muddy, or it has a burned odor, you should have it checked by your technician who will most likely advise you to have a transmission drain and refill or transmission tune-up."

So you know how to check, where to check? On the 1995 KA24DE there is a dipstick on the passenger side toward rear of engine (closest to trans) it should be similar on the 89 KA24e (can someone please verify this)

The fluid drain plug is on the bottom of the transmission pan, you will need to jack the car up and place it on stands. Locate your transmission Pan and use the appropriate socket to LOOSEN not remove the plug.

Once the plug is loose, push in slightly as you unscrew it.... this will prevent fluid from flying all over you and your driveway/garage. Have your pan ready to catch fluids. Actual fluid amount varies depending how full the torque converter is but should be 8.4-9 quarts total; you should only have to insert 4-5 quarts tops, just check the dipstick after 3 quarts.

When you finish installing some fluids, you don't want to overfill, this is why I mentioned check the dipstick. This should be done after fluids are warm and car has been running for a little while. It's not a bright idea to run car with no fluid but you also don't want to overfill, I'd start with 3 Qts.

Fluids are important if you have HIGH mileage like 200K. Add a little Lucas to Royal Purple Auto Trans Fluid and you have a winning Combination! These two have served me well and aside from tractor oil (used in high load applications) is my preference. Since I cannot voice the opinion of everyone on this forum I'd still like to hear the preferences of others on fluid choice...

[racepar1]

You would put royal purple synthetic ATF in an 89' 240's auto trans!!!??? What a waste of money! The fluid will cost you more than getting another auto trans off the for sale items forum. The problem with doing a drain and refill service on a dirty trans is that it only replaces roughly 30% of the total fluid in the trans, that is why shops buy the flush machines. The best advice I can give you is this; drive it till the trans goes out and start acquiring parts for a M/T swap in the meantime.

[Kane112]

lol thanks for the info. ye think im going to do the mt swap but dont have much money so ill need to start looking for cheap party and labor