AOD question(s)

alpstang

New Member

Oct 16, 2006

2

0

0

Nov 23, 2006

#1

• Nov 23, 2006

• #1

I've got a 1992 GT with an AOD. Problem is it's slipping in 4th gear. Any ideas? Is there a quick fix for this?

Also it seems to go 1-2-3 ok but when it's in 3rd it doesn't want to kick down to 2nd even if I floor it. Could this be related to the 4th gear slip?

Last questions: If I need to rebuild is there a kit and how to ID the tranny?

thanks

Paul

 

L

lang williams

New Member

Jun 11, 2003

567

0

0

cleveland, oh

Nov 23, 2006

#2

• Nov 23, 2006

• #2

4th gear slip sounds bad because 3rd and 4th are in lock up gears...Did you try adjusting the tv cable? To my knowledge their are two aod rebuild kits (early and late) an since u have the second to last year of the aod you would need the late kit, if you search ebay for aod rebuild kits they have the break down and the manuals an dvds for doing the rebuild...good luck

 

sjhm9102

New Member

Jul 10, 2004

0

0

0

texas

Nov 23, 2006

#3

• Nov 23, 2006

• #3

i wouldnt even bother rebuilding it have someone else do it imo i have went through 3 valve bodies and 3 governors and at least 5 fluid changes trying to fix the downshift problem now my od dont work

 

ronburgundy

Member

Nov 19, 2006

179

0

16

BC coast

Nov 23, 2006

#4

• Nov 23, 2006

• #4

band is probly fried, when it's rebuilt try to get a bigger od servo piston, it increases the clamping force substantially. is also possible to have leaking end plugs in the vb but not as likely as the burnt band.

 

7

71swing

Member

Aug 18, 2006

199

0

17

Omaha,NE

Nov 23, 2006

#5

• Nov 23, 2006

• #5

sounds like the overdrive is gone, Maybe slipping now but will soon only rev in 4th. You will have to have the overdive band replaced. This is a very common problem with the AOD when you start applying to much power to the overdrive.

If you choose to get the overdrive replaced you should invest in a valvebodies from Lentech with a overdrive delete switch, this way you can shut off the overdive when ever racing, to prevent it from shifting into 4th while excelerating.

 

sjhm9102

New Member

Jul 10, 2004

0

0

0

texas

Nov 24, 2006

#6

• Nov 24, 2006

• #6

ill be getting a heavy duty od band and a transgo reprogramming kit with a high rev governor

 

ronburgundy

Member

Nov 19, 2006

179

0

16

BC coast

Nov 24, 2006

#7

• Nov 24, 2006

• #7

be sure to get an A od servo as well. this should permanently solve the burnt band.

 

sjhm9102

New Member

Jul 10, 2004

0

0

0

texas

Nov 24, 2006

#8

• Nov 24, 2006

• #8

i found an A++ super servo w/ hard anodized cover for 105.00 on ebay also HD super master rebuild kit with alto steels HD od band and tan clutches for 100.00

 

alpstang

New Member

Oct 16, 2006

2

0

0

Nov 26, 2006

#9

• Nov 26, 2006

• #9

Thanks for the info guys. I've got to keep the costs down on the repairs so will a full rebuild kit do the trick for the moment?
Sorry for sounding dumb but is an AOD servo something new to add on or does it need to be replaced/upgraded?

 

sjhm9102

New Member

Jul 10, 2004

0

0

0

texas

Nov 27, 2006

#10

• Nov 27, 2006

• #10

the a ++ servo is bigger it is an upgrade you can use a stock servo but if you got to much power in your engine youu may burn up the od band again

 

B

bcmbcmbcm

20+ Year Stangneter

Jan 29, 2003

455

0

16

Nov 27, 2006

#11

• Nov 27, 2006

• #11

Lentech Valve Body

A Lentech VB doesn't require an A+ servo. If rebuilding this might be nice to put in at the same time. You will need to drill a hole for the wire.

 

L

lxarlo

New Member

Nov 28, 2005

21

0

0

Nov 27, 2006

#12

• Nov 27, 2006

• #12

71swing said:

sounds like the overdrive is gone, Maybe slipping now but will soon only rev in 4th. You will have to have the overdive band replaced. This is a very common problem with the AOD when you start applying to much power to the overdrive.

If you choose to get the overdrive replaced you should invest in a valvebodies from Lentech with a overdrive delete switch, this way you can shut off the overdive when ever racing, to prevent it from shifting into 4th while excelerating.

Click to expand...

the trans wont shift into fourth at wot anyway. just get an aode band and the afforementioned A plus servo.