aod with no od.
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Junior User
Joined: Jul 2012
Posts: 58
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From: Lockport
aod with no od.
aod transmission with 70k lost od last night. it engages but wont hold and seems to neutral out until I move it to D. never used for towing and isn't "horsed around" 1993 F150 5.0 AOD Metric 2wd.
Lead Driver
Joined: Mar 2006
Posts: 6,259
Likes: 438
From: IL
I'd check the fluid and see if it's turning brown or smells like it's burning, then if you can work on the trans yourself I'd take it to the dealer. It could be something as simple as your shifter solenoid is going bad. I know when I owned my F350 7.3L with the 4EOD, I started having the same problems, then it started shifting hard. Dealer had to replace coil packs to a tune of $780 installed, Still better than a new trans though.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
PCM has no control of the AOD. Possible the servo is bad. I just encountered a loss if reverse in my 1992 F150, and so far, replacing the reverse servo has fixed it.
I'm with Ken on this. That sounds like a possibility. Could also post this in the Clutch, transmission, differential forum for further assistance. I know Mark Kovalsky is the Ford transmission guru. You may be able to send a PM to him.
I'm with Ken on this. That sounds like a possibility. Could also post this in the Clutch, transmission, differential forum for further assistance. I know Mark Kovalsky is the Ford transmission guru. You may be able to send a PM to him.
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Junior User
Joined: Jul 2012
Posts: 58
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From: Lockport
thanks all. this will be the 2nd used tranny in it. cant seem to get a decent one. would rather replace a servo or o ring instead of a band or clutch. will need further diag but now im off on a decent start.
Cargo Master
Joined: Aug 2007
Posts: 2,560
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From: New Zealand
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Postmaster
Joined: May 2008
Posts: 2,703
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From: La Vergne, TN
If OD is gone. 3rd ain't far behind..
They burn up cause not enough fluid flowing wen cruising around at 45 mph with OD ENGAGED..
Just have a shop rebuild it with upgraded red clutch packs, upgraded 2" OD band, and a good valve body and tq converter..
And you'll only spend about 1500 and have a near bullet proof trans.. That's what's done to mine and it doesn't blink an eye at the beast hooked to it..
They burn up cause not enough fluid flowing wen cruising around at 45 mph with OD ENGAGED..
Just have a shop rebuild it with upgraded red clutch packs, upgraded 2" OD band, and a good valve body and tq converter..
And you'll only spend about 1500 and have a near bullet proof trans.. That's what's done to mine and it doesn't blink an eye at the beast hooked to it..
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Junior User
Joined: Jul 2012
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From: Lockport
so Ken, you are saying that it still sounds too high? im not attempting to be rude but your link says 30 psi with the tool, which I used. I work with a retired ford mechanic who does everything now. he told me about this site to begin with. either way: still no od, it applies but wont stay in od. this tech told me to check the governor in case its partially plugged.( allowing enough pressure to apply but not hold) its getting cold up here so im looking to find a break at work to check it.
Cargo Master
Joined: Aug 2007
Posts: 2,560
Likes: 69
From: New Zealand
Sorry, I wasn't aware that you had the test tool.......so 28 psi (vs 0-5 psi without it) is in line with their instructions.
An AOD can be upgraded for durability at a price, but by the time mine failed, I had had enough of them & swapped in a C6. I didn't need OD.
If you haven't already seen it, there is a trouble-shooting page on that site - Troubleshooting the AOD Transmission
An AOD can be upgraded for durability at a price, but by the time mine failed, I had had enough of them & swapped in a C6. I didn't need OD.
If you haven't already seen it, there is a trouble-shooting page on that site - Troubleshooting the AOD Transmission
More Turbo
Joined: Jun 2011
Posts: 634
Likes: 21
From: Indiana
yep, its the OD band. its easy enough to fix.
remove the transmission from the vehicle
remove the pan, filter and valve body
remove the OD servo from the bore
remove the front pump from the case
remove the intermediate clutches
remove OD band and discard
replace OD band
Install OD servo in bore to hold band in place - upgrade to "A" servo or aftermarket "A+" servo is desired.
install intermediate clutches
install new front pump gasket and o-ring
install front pump and torque to specs
install valve body and torque to spec
install new filter and torque to spec
install new transmission pan and new gasket, torque to spec
install transmission into vehicle, refill with fluid
adjust TV cable properly
test drive for proper operation
remove the transmission from the vehicle
remove the pan, filter and valve body
remove the OD servo from the bore
remove the front pump from the case
remove the intermediate clutches
remove OD band and discard
replace OD band
Install OD servo in bore to hold band in place - upgrade to "A" servo or aftermarket "A+" servo is desired.
install intermediate clutches
install new front pump gasket and o-ring
install front pump and torque to specs
install valve body and torque to spec
install new filter and torque to spec
install new transmission pan and new gasket, torque to spec
install transmission into vehicle, refill with fluid
adjust TV cable properly
test drive for proper operation
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