yo!
Is this the AOD from a car or orig in da Bronco?
Troubleshooting; "..from the AOD service manual"
by duanemyhre at sccoa.com for a T Bird SC but similar
Shift Trouble Diagnosis
TV Control Cable System
A. Symptoms: Excessively early and/or soft upshifts with or without slip-bump feel. Slip-bump feel on light throttle shift into and out of fourth gear (3-4 and/or 4-3 shifts). No forced downshift (kickdown) function at appropriate speeds.
Cause: TV control cable set too long.
Remedy: Reset cable per procedure for the TV control cable system.
CAUTION:
Do not drive vehicle if cable is broken or disconnected at throttle body lever.
Damage to friction elements in transmission may result due to excessive slipping since TV pressure will remain near zero. If it is necessary to drive vehicle before servicing or resetting cable, disconnect cable at the transmission lever. TV pressure will not be near maximum, allowing light throttle operation. However, shift will be delayed and harsh.
Remedy: Replace/reconnect cable and reset per procedure for the TV control cable system.
A. Symptoms: Shift clunk when throttle is backed off after full or heavy throttle acceleration. Harsh coasting downshifts out of fourth gear (automatic 4-3 shifts in D range).
Cause: TV control cable is set too short.
Remedy: Reset cable per procedure for the TV control cable system.
Cause: Transmission lever does not return to idle (lever to rear as far as possible) although cable is correctly set.
Remedy: Check for binding due to misaligned or damaged cable brackets or damaged cable or return spring (in rubber boot). Check for binding at cable connections at throttle body or transmission. Pry off cable from the TV lever ball stud and check for free movement of the cable. Lubricate the ball stud with a small amount of Premium Long Life Grease C1AZ-19590-E (ESA-M1C75- B) or equivalent and reattach the cable. Check for frozen moisture in cable due to damaged boot. Service or replace as necessary. Set cable per procedure for the TV control cable system.
Cause: Cable assembly not correctly attached to bracket at either throttle body or transmission.
Remedy: Determine reason for cable becoming detached. Replace if necessary. Set cable per procedure for the TV control cable system.
A. Symptoms:
Extremely delayed and harsh upshift, especially at light to moderate acceleration and harsh idle engagement.
Cause: Cable disconnect at transmission (transmission TV pressure is at maximum).
Remedy: Determine cause for cable becoming disconnected. Service or replace as necessary. Set cable per procedure for the TV control cable system.
Cause: Transmission lever stays at wide-open throttle (WOT) or part throttle although cable is correctly set.
Remedy: Check for binding conditions as detailed in Step B. Service or replace as necessary. Set cable per procedure for the TV control cable system.
#2
o Soft/Early/
Mushy 2-3 Upshift
Possible Source(s):
§ Improper fluid level.
Action(s) to Take:
§ Perform «fluid level check» .
Possible Source(s):
§ TV throttle linkage misadjusted (low TV) sticking/damaged. SEE BELOW FOR THE BUSHING INfO; replace bad bushing w/Brass bushing
Action(s) to Take:
§ Adjust throttle linkage. Service as required.
Possible Source(s):
§ Low main control pressure.
Action(s) to Take:
§ «Control pressure test» . Note results.
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 valve or throttle control valve sticking.
Action(s) to Take:
§ Determine source of contamination. Service as required.
Possible Source(s):
§ Governor valve sticking.
Action(s) to Take:
§ Perform «governor test» . Service as required.
If you are having any problems, it might be prudent to check the TV pressure anyway.
All Upshifts Harsh or Delayed or No Upshifts
Possible Source(s):
Improper fluid level.
Action(s) to Take:
Perform «fluid level check» .
Possible Source(s):
Throttle linkage--misadjusted (high TV)/ disconnected/sticking/damaged/ return spring disconnected. SEE BELOW FOR ADJUSTMENT AND THE BUSHING INFO; replace bad bushing w/Brass bushing
Action(s) to Take:
Adjust throttle linkage. Service as required,
Possible Source(s):
Manual linkage--misadjusted damaged.
Action(s) to Take:
Check and adjust or service as required.
Possible Source(s):
§ Governor sticking.
Action(s) to Take:
§ Perform «governor test» . Service as required.
Possible Source(s):
§ Main control pressure too high.
Action(s) to Take:
§ «Control pressure test» . Service as required.
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.
o Rough/Harsh/Delayed 1-2 Upshift
Possible Source(s):
§ Improper fluid level.
Action(s) to Take:
§ Perform «fluid level check» .
Possible Source(s):
§ Poor engine performance.
Action(s) to Take:
§ Tune engine.
Possible Source(s):
§ TV linkage--misadjusted (high TV)/damaged. All shifts will be harsh/delayed.
Action(s) to Take:
§ Adjust linkage. Service as required.
Possible Source(s):
§ Main control pressure too high.
Action(s) to Take:
§ «Control pressure test» . Note results.
Possible Source(s):
§ Governor valve sticking.
Action(s) to Take:
§ Perform «governor test» . Service as required.
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.
o Harsh/Delayed 2-3 Upshift
Possible Source(s):
§ Incorrect engine performance.
Action(s) to Take:
§ Check engine tune-up.
Possible Source(s):
§ Throttle linkage misadjusted (high TV)/sticking/damaged. All shifts will be harsh/delayed. SEE BELOW FOR ADJUSTMENT AND THE BUSHING INFO; replace bad bushing w/Brass bushing
Action(s) to Take:
§ Adjust linkage. Service as required.
Possible Source(s):
§ 2-3 accumulator piston--apply passage plugged/omitted.
Action(s) to Take:
§ Remove 2-3 accumulator piston and visually inspect or air test for plugging condition or omission.
Possible Source(s):
§ 2-3 accumulator piston seals cut/worn.
Action(s) to Take:
§ Replace seals, determine cause of condition. Service as required.
Possible Source(s):
§ Damaged 2-3 accumulator.
Action(s) to Take:
§ Service as required.
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. 2-3 capacity modulator valve.
Action(s) to Take:
§ Determine source of condition. Service as required.
Possible Source(s):
§ TV control cable bent, sticking.
Action(s) to Take:
§ Check cable. Replace as necessary.
--
Throttle Valve (TV) Cable Adjustment; Using a 100 psi pressure gauge to the TV port on transmission; "...If you don't have a gauge, or you are looking for a roughly correct place to start, you can remove the cable from the throttle body lever, and adjust it so that the cable is neither slack, nor under tension when the cable is reinstalled on the throttle body lever. This will get you fairly close. We do not reccomend this for a final setting. You should always use a gauge to verify your TV setting..."
Source: by Mike B at Baumann Engineering
http://www.becontrols.com/tech/tvlinkage.htm
Throttle Valve (TV) Cable Adjustment & Diagrams; Using a 100 psi pressure gauge to the TV port on transmission & with engine off
Source: by Steve83 (Steve, That dirty old truck) at
http://www.supermotors.net/registry/media/770015
Throttle Valve (TV) Brass Bushing "...are known to have problems with TV cable adjustment, and it's often due to the original rubber bushing cracking & falling out while driving, which normally destroys the transmission in a couple of miles. But it's so common that Ford makes this upgraded brass bushing (see pic for Ford part number), which is cheap (~$10) & easy to install..."
Source: by Steve83 (Steve, That dirty old truck) at
http://www.supermotors.net/vehicles/registry/media/491048
Throttle Valve (TV) Cable Adjustment Video; This is a short clip compressed video clip
Source: by Kenneth C (badshoeproductions) at
Throttle Valve (TV) Brass Bushing pic
Source: by Sixlitre (Malcolm H, Eddie Bauer) at
http://www.supermotors.net/getfile/233780/fullsize/img_0019.jpg
more in my site under TRANSMISSION Automatic AOD
