AOD popping out of gear

Topic: AOD popping out of gear (Read 14088 times) previous topic - next topic

AOD popping out of gear

February 11, 2008, 08:37:57 PM

I'm still having issues with my transmission after replacing the seals, filter, gasket, and giving the thing new fluid. Randomly at lower speeds (doesn't matter if its in first, second, or I think even third) when accelerating lightly to "medium", the tranny will pop out of gear and won't go in until either I give it a few seconds or I rev it higher. The tranny was perfectly fine before this and both the shifter and tv cables were readjusted to make sure they were correct (according to the Haynes book).

Fluid's right where its supposed to be. It doesn't go away hot or cold. Seems to happen on all surfaces/hills and whether or not I'm turning. I find it hard to believe the tranny's about to die as it still works fine 80% of the time when accelerating around town, but I wouldn't rule anything out at this point. What am I looking at that would be the culprit?

AOD popping out of gear

Reply #1 – February 11, 2008, 09:12:10 PM

If it was running fine before,why did you re-adjust the TV cable.It's probably not where it needs to be.

AOD popping out of gear

Reply #2 – February 11, 2008, 09:17:27 PM

I would put the tv valve back...

AOD popping out of gear

Reply #3 – February 11, 2008, 10:40:23 PM

Adjusting the TV cable without a pressure gauge is dangerous.
Ballpark is with the intake valve closed, there should be no slack in the cable but not pulling on it either.

I had mine adjusted out too far once and it would cause FIRM shifts and OD would stick.

Read through here and see if any of their pointers help.
http://www.becontrols.com/ourfaqs/aodtroubleshoot_1.htm

1. Did you check your separator plates for flatness?
2. New gaskets I hope.
3. Did you use a torque wrench? Apparently AOD Valve bodies are sensitive to torque.

AOD popping out of gear

Reply #4 – February 12, 2008, 01:33:17 AM

We pulled the tranny and motor, did the new gasket, seals, filter, oring, and fluid and bolted it back together on the new motor - without touching anything it was already acting funky.

As far as everything on it other than the cables, this was all done over new years week so I don't even remember at this point how it was all put back together (specifics wise). Should I just have a tranny shop adjust the thing and see if it fixes the issue? I don't want to drive it with the way its acting - it probably won't last too long this way.

AOD popping out of gear

Reply #5 – February 12, 2008, 01:42:18 AM

i have similar problems now with my 20th(so called new transmission with papers to boot!!!!)
when im in between gears, it wants to slip till i let off the gas.
I need to learn how to adjust the tv cable as well so im gonna do a search and break open the manual.

does anyone have the proper steps memorized? maybe it will help the both of us out.

AOD popping out of gear

Reply #6 – February 12, 2008, 11:19:33 AM

Okay, it happens when going into Overdrive also, so it isn't gear specific

AOD popping out of gear

Reply #7 – February 12, 2008, 02:25:53 PM

Sounds like a fluid pressure problem to me. The pump is either worn out or it can't suck fluid from the pan. Make sure your filter is clean and there should be a gasket b/t the filter and pump. If there is no gasket or the bolts are loose, the pump will suck air.

AOD popping out of gear

Reply #8 – February 12, 2008, 06:39:32 PM

Sounds to me it's on it's way out.you should check it with a gauge though!,You need to know whats up when your changing the cable!If not, what you think is "great" might actually be doin damage.

AOD popping out of gear

Reply #9 – February 12, 2008, 06:51:17 PM

I'll do what I can but obviously, I don't know enough about transmissions. I just found it weird that it worked fine before the new motor though and started the second it pulled out of the driveway. First it was needing more fluid and acted like it, but the problem never went away after finally getting all 9+ quarts in there. It seemed to improve but after actually getting it on the road, it wasn't any better.

I'll look into it more but from what I can find, this problem isn't anything aod specific, just trannys in general. It DOES seem like lack of fluid so we'll see. If worst case, the car will get a Baumannator and 4r70w along with its mass air system for the motor. Getting better response from both the motor and tranny sure looks like a big two thumbs up.

AOD popping out of gear

Reply #10 – February 12, 2008, 08:09:05 PM

I had a similar issue with my old mustang, and it turned out to be the previous owner left the little gasket between the tranny filter and valve body off. The fluid would slosh away to the rear of the pan, and it would kick out of gear.

AOD popping out of gear

Reply #11 – February 12, 2008, 09:28:54 PM

The first step of diagnosis on an AOD is setting the TV pressure with a gague. Untill you do that, you are just guessing. If you have a late model EFI engine with a cable going from trans to TB, its as easy as looking for about 5PSI at idle, then pull the cable about 10mm without revving the engine, and you want about 30 PSI if I am remembering correctly. You probably have the "block type" adjuster, check these pics for reference. http://www.txchange.com/aodadj.htm

AOD popping out of gear

Reply #12 – February 12, 2008, 10:21:36 PM

That is true, and with the lovely little plastic grommet that likes to break with age. Anyways, I think this thread has already been a great help with diagnostic information. Yes, I will start with the tv cable and go from there - likely won't be until this weekend.

The above link is exactly how I adjusted the thing before (not this last time as I had no internet access, but similar) and it never mention anything about pressures so I didn't think anything of it.

AOD popping out of gear

Reply #13 – February 13, 2008, 12:34:42 PM

Like Tbird232ci and I said....make sure the pump isn't sucking air. Make sure there is a gasket b/t the filter and valve body. Make sure the bolts are tight.

AOD popping out of gear

Reply #14 – February 13, 2008, 08:36:18 PM

Of course. Give me a few days to find time to check it.