AOD = no reverse

93 Mark VIII

Registered User
my 90SC AOD has no reverse. Any suggestions on what I can do to remedy this? I have checked the fluid levels.

Brian
 
On a side note, I drove my '85 Cougar with no reverse for over a year. I got really good at finding parking spots. Oh yeah!!

Thomas
 
I have a 90 AOD that the OD would slip if you floored the car.
If your looking for another trans to rebuild,before you take
the one out you have.

RANDY
 
Brian. If you want to buy me some gas.I can run the tranny over to ya.
And when you get mine rebuilt.And swap the tranny out,you can trade
me your trans.

RANDY
 
I would be up for that! Just let me know when you have some time and I can meet you in the middle. It may take a few weeks to get you the old one back.

Brian
 
Here's something for you to look at regarding no reverse:


o No or Delayed Reverse Engagement (Forward OK)

Possible Source(s):
§ Improper fluid level.

Action(s) to Take:
§ Perform «fluid level check» .

Possible Source(s):
§ Manual linkage misadjusted/damaged.

Action(s) to Take:
§ Check and adjust or service as required.

Possible Source(s):
§ Low main control pressure in reverse.

Action(s) to Take:
§ «Control pressure test» .

Possible Source(s):
§ Reverse clutch or reverse clutch stator support seal rings leaking (No. 1 and No. 2).

Action(s) to Take:
§ «Air pressure test» or visually inspect, especially if reverse clutch plates are burnt.

Possible Source(s):
§ Reverse clutch assembly burnt/worn

Action(s) to Take:
§ «Air pressure test» or visually inpect, especially if reverse clutch plates are burnt.

Possible Source(s):
§ Reverse clutch piston check ball leaking/leaking piston seal rings.

Action(s) to Take:
§ «Air pressure test» or visually inspect, especially if reverse clutch plates are burnt.

Possible Source(s):
§ Valve body bolts loose/too tight.

Action(s) to Take:
§ Tighten to 9-11 N-m (80-97 lb-in).

Possible Source(s):
§ Valve body dirty/sticking valves.

Action(s) to Take:
§ Determine source of contamination. Service as required

Possible Source(s):
§ Transmission filter plugged.

Action(s) to Take:
§ Replace filter.

Possible Source(s):
§ Pump damaged.

Action(s) to Take:
§ Visually inspect pump gears. Replace if necessary.
 
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