Type F in a AOD?

[Archangel]

Basically where Pirate and 1987cp are getting at is that you can run your C6 with just the vacuum line attached and the kickdown is purely optional, whereas the AOD don't have a vacuum line and instead uses that rod to adjust the line pressure so adjusting the rod can save or kill an AOD.

Also, what they said on the fluids, AOD takes Dextron/Mercon III, which is your regular trans fluid that can be found about anywhere for like $3 a quart. Type F has different hydraulic properties, and the AOD valve body will not tolerate it for long.

[hav24wheel]

O ok.. i see now. i guess i really have not looked at the trans too much yet.. i have read about how to set the tv cables, but have not really found too much about the proper seting on the rod settings... off to the "stickys" i go...

[Archangel]

Well you're actually supposed to do it with a pressure gauge installed in one of the ports on the passenger-side of the trans, but mine I just set it to near max TV pressure - unhook cable from TB, manually move the TB to WOT state, yank on the cable till the trans gets to WOT state, then back off the cable a tad and hook it back to the TB lever.

Be advised, however, that the TV rod on the early AOD works opposite to the cable found on later AODs - when a cable disconnects the trans goes to idle line pressure and you burn up the clutches, whereas when the rod gets loose the trans defaults to WOT line pressure and you can really do much damage to it at all. Not sure as to why Ford went from your setup to the cable one, especially since the same exact logic can be executed with a cable as well... Take a pic of your TBI linkage tho, and post it here, as there are two ways the TV rod can be hooked up to the TBI and adjustments of those are totally opposite, and I'm not sure which setup Ford used.

[87gtVIC]

Well you're actually supposed to do it with a pressure gauge installed in one of the ports on the passenger-side of the trans.

:worship: you are the first person i heard say that critically correct information.

[Archangel]

Nope, not really, Thain repeats it times and again whenever that question comes up, but no one seems to listen.

[87gtVIC]

Nope, not really, Thain repeats it times and again whenever that question comes up, but no one seems to listen.

ok then lol :worship: you are the second person to say it.

[gadget73]

I don't follow my own advice. I don't have the guage or the spacer block. I screw with it till it feels right. The LSC has a zip tie in there adding pressure because I didn't feel like unhooking it and doing it the right way.

[82LTDQS]

A good friend of mine has a panther with an AOD. It was running fine. He did his own "shade tree mechanic" tranny fluid change and used type-F. His trans blew a week later. At first we though it just went bad till he mentioned the type-F thing.

[1987cp]

Basically where Pirate and 1987cp are getting at is that you can run your C6 with just the vacuum line attached and the kickdown is purely optional

When did I say that? :p I like automatic WOT downshifting!

[hav24wheel]

Take a pic of your TBI linkage tho, and post it here, as there are two ways the TV rod can be hooked up to the TBI and adjustments of those are totally opposite, and I'm not sure which setup Ford used.

I'll do that some time tomarrow. I had it adjusted like i would a kickdown on a C6, where both the TBI and the trans where at WOT at the same time, but the trans wouldn't shift into overdrive when i was at WOT pushin 5,000 RPM on the tach. lol so i tryed to fallow the adjustment procedure on the sicky http://www.grandmarq.net/vb/showthread.php?t=2601 But on the TBI it does not even have a screw with 13 threads, it only has about 10-11 threads.. But i do have it set now so i get a 3-2 downshift at 45mph...

[Archangel]

Your initial adjustment was pretty good, especially considering that AODs are not supposed to stay in OD at WOT conditions - there is actually a valve body modification that is needed to allow that, tis part of some aftermarket shift kits. 3-2 downshift at 45mph seems a bit high, but at the same rate that's exactly where the OD-3 downshift happens with the factory settings, so your current adjustment is still way better than factory.

[hav24wheel]

Really? i thought it should shift into OD some time even at WOT.... i didn't want to run it much past 5,000 RPM. But this is the first OD tranny i have owned. lol. the shifts felt alot better with the first setting i had it at, they feel alittle "loose" for my liking right now. but i think a shift kit will help that.. and playin with the adjustment a bit more..

[Lincolnmania]

not supposed to shift into overdrive at wide open throttle

[82LTDQS]

Question ref the C4 Kickdown.

Basically where Pirate and 1987cp are getting at is that you can run your C6 with just the vacuum line attached and the kickdown is purely optional, whereas the AOD don't have a vacuum line and instead uses that rod to adjust the line pressure so adjusting the rod can save or kill an AOD.

Also, what they said on the fluids, AOD takes Dextron/Mercon III, which is your regular trans fluid that can be found about anywhere for like $3 a quart. Type F has different hydraulic properties, and the AOD valve body will not tolerate it for long.

.


Im thinking of going with a C4. I know it needs a vacuum signal from the engine. Some mention that the kickdown lever/cable is optional. I understand that, but does it come with a cost? I dont mean with reliability (I know the whole bit about how the AOD cable/lever works differently.) I want ot keep things simple under the hood, so originaly did not want a kickdown. However, I dont want to down shift manualy. Whats the negative to not running a kickdown? If there is none, then why is it even an option to have one? Thanks

[gadget73]

No kickdown means no passing gear. Floor it when you're in third, and it will not downshift. You can drop it to second manually with the gear shifter though. Basically it makes for better acceleration.