All gears go forward!

[Marcsnothere]

87 5.0 HO AOD Transmission. Everything seems stock. (Just picked up car for my daughter a few months ago).

Before work began on car, tranny was slow to shift down to 1st, and reverse began to fight. So, Put it in the air, dropped pan, took out valve body. Took Valve body apart, cleaned, and reassembled Valve body with added shift kit parts.

During that time, I noticed the TV cable was disconnected from the Throttle body. Not sure how or why, but it was, so I reconnected it.

Fixed charging issue, ripped out A/C components, and fired her up.

Low works well. The car now really really likes going forward. Neutral... goes forward. Reverse, yup, goes forward. BUT, when in reverse, if I quickley give it gas, when the RPM's drop back down, the tires stop moving (Car is still on 4 jack stands) Park was being a pain.

Dropped pan again, checked valves, checked check balls. Went through everything on valve body, put it back up, same thing, but park seems happy again..

Im really lost on this one. I have only seen a couple posts online about such a thing, but seems I cant find an answer.

Oh, almost forgot, I did take the governor out and clean it well, and made sure to put it back in properly.

Im way lost on this, so any help is really appreciated.
Thanks in advance.
Marc

 

[Marcsnothere]

Anyone?

 

[bentley429isBAC]

Stupid question but did you put it on the ground and try it that way or just on jackstands.

 

[Marcsnothere]

umm, not a stupid question. I have not taken it off of the jack stands yet. I didnt really think that would make a difference.

Also, probly not inportant, I did replace the Trans mount as it was crap.

 

[bentley429isBAC]

Lower it down and try that for the heck of it.

 

[OonDeanisS]

this is just a wild guess but MAYBE the shifter is sliding past R and N and somehow engaging D? i really have no clue how auto shifters work, but maybe this will give someone else an idea?

 

[Hawkeye_306]

A poorly adjusted TV can cause strange things to happen. See if it goes into proper gear with the TV disconnected to indicate if its TV adjustment problem.

 

[Marcsnothere]

Did that today, zero change. I tore into it again today, just to mkae sure I did the vavle body right, and everything was correct. I did notice today, that even while in park, the motor wont rev up normally. Its in park, but acts as if someone locked the wheels in drive, and gave it gas. Make any sense?
So sounds like I need to find a cheap tranny to get me by for now, that way I can safely learn to rebuild this tranny to my likings eh?

 

[jetmech807]

Did that today, zero change. I tore into it again today, just to mkae sure I did the vavle body right, and everything was correct. I did notice today, that even while in park, the motor wont rev up normally. Its in park, but acts as if someone locked the wheels in drive, and gave it gas. Make any sense?
So sounds like I need to find a cheap tranny to get me by for now, that way I can safely learn to rebuild this tranny to my likings eh?

That would tell me that drive is still engaged and the only reason the wheels aren't turning is because the lock that is engaged when park is selected is keeping it from turning.

Sent from my PC36100 using Tapatalk 2

 

[joshprice]

the plastic gromet breaks on the throttle body leting the cable drop usually on efi cars with a aod drop line psi drop burns direct clutches verry quicky if there burnt to gether it wil move fwd in neutral rev and bind in park hate to break bad news but rebuilt a bunch of aods because of this