transmission flush?

[cvbox1990]

Hello again everyone I've got a question for anyone who can help.Anyone know of a surefire way to flush a trans after some. Dirty bird puts water in your transmission turning it to strawberry milk?

[sly]

drain as much as you can... fill with new fluid. Would be better to take the VB out to get more fluid out and pop the plug on the torque converter if it has a plug. If not, you'll have to take the trans out, pop the TC off and train it. You definitely don't want to drive on that. And you may need a rebuild if you did drive on that any.

Or tow it to a shop and let them do it.

[cvbox1990]

Yes unfortunately I drove it 85 miles before I realized it,as for the flush I am more worried about the b&m vb that is it trans now,I have another rebuilt trans that is supposed to have a shift kit in it and am putting a tci streetfighter Stahl converter on it but wanted to swap vbs,transmission's never really have been my specialty,and as for the trans cooler do u think blowing out the lines with a compressor would do the trink? Thanks for any info.

[sly]

Blowing out the lines should work. Leaving a few drops of water here or there won't be a big issue as they will burn off after the first long drive. You just want to get the majority out. The VB might need new seals on actuators and pistons depending on if they were scored any. I doubt that would be an issue though. Low possibility.

All this said... if the transmission is frothing the fluid without there being water in the system, That would mean the pump probably has a cracked housing internally and is sucking air somehow. Are you sure there's water in the system?

Also, I'm not good with transmissions either, I just know a little about how they work.

[cvbox1990]

Yes sir,not foamy just looked like the pink panther melted in it.�� got a second opinion on it and he was pretty sure as well,I am just preying this other trans is built like it is supposed to be looked really clean behind the tc,I'm thinking the owner of an 86 iroc that I dusted might be the culprit,but been meaning to drop the trans and change to the Stahl converter just didn't want to till I had to,so in a way it did me a favor.

[gadget73]

Drain the pan and converter. Maybe fit an external filter in the trans cooler lines. That should help separate out water. Change the filter a few times as needed. A small amount of moisture won't be a big problem, just make sure you take it for a long drive after changing the fluid so it gets fully hot and cooks it out.

[cvbox1990]

Thanks again everyone,dropped the old transmission,going to slap this other one in tomorrow and we what happens,also it appears on the flywheel that there are only two holes the drain could be in ,does it matter?

[sly]

the torque converter should have a drain on the outer edge IF it has one. Some newer ones didn't come with a drain.

[cvbox1990]

Yes it does have a drain,I think I killed the trans pump though,still haven't hooked everything up,man I been slackin��

[cvbox1990]

Further more does anyone know how the bar that the shift linkage hooks to on the transmission comes out?or have a digram on hand?the problem is where the returnspring(I think)connects to the transmission there is not enoughthreads showing to get the nut on after the linkage bar is attached.any insight would be greatly appreciated,as I said this trans is supposed to have a shift kit and be fully rebuilt so I'm anxious to get her in and Vicky back on the road.i think the car it was used in was a console shift which might be where I'm having trouble.

[gadget73]

The threaded nut holds the TV lever on. The inner/larger shaft is the shift lever.

Shift lever comes out by removing the nut that holds on the TV lever.
Remove the trans pan
Remove the big nut inside that retains the "rooster comb" device. You'll know what part I mean when you see it
remove the roll pin in the pan rail of the trans body
shift lever should slide right out

Console shift levers are different. 89- shift levers are different than 90+. You're probably going to need the original parts from your car. An eyeball on both would tell you. if they aren't the same, it needs to switch. I think the TV levers are also different. When in doubt, use the original parts off your car.

When re-installing make sure you get the tang lined up in the piston sticking out of the valve body, and the flats lined up on the rooster comb. It only fits on there one way.


If the TV lever is pushed inside too far, you'll have to open it up and have a look. I forget the particulars but it engages on something inside the valve body. If that isn't positioned right, it won't let the threaded shaft stick out where it belongs.

either way you're removing the trans pan and having a poke in there.

[cvbox1990]

Thanks gadget so as for the actual valve body will it need to be removed as well or can it be accessed without dropping vb?as I said I never have had to tear into a transmission,done alot of swaps,but fluid. And filter change is as far as I went.

[gadget73]

Valve body can stay. The shift lever and its related parts will come out without touching any of that.

If you do mess with the valve body, be aware that there are 2 gaskets in there, one between the body and the seperator plate and one from the plate to the trans. Its also got some check balls that can roll away, and a very specific torque sequence that absolutely must be followed using an inch-pound torque wrench or it is not going to work correctly.

Basically, don't poke at it unless you have some particular need to.

[cvbox1990]

Just an update I put a different trans in and I have no forward,it will go in reverse fine but put in drive its like your driving a 5 speed with ur foot halfway on the clutch.any ideas?

[Tiggie]

Well that's disappointing.

The shift lever is adjusted right, i.e. You're not between positions on the trans. And the TV cable is connected and adjusted correctly?

Did you open this up to swap the shift levers? Do anything else while you were in there?

Not to overlook the obvious - it's full of fluid?

Doesn't sound good mang.