Aod transmission no OD

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Thebigwhopp

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Sep 21, 2020

#1

• Sep 21, 2020

• #1

Car shifts into over drive and it's like a second neutral. Will switching filter and fluid have any chance of saving the overdrive band? The fluid is a faded red that smells burnt. The car has a stock gear ratio and motor ,so will it be fine to just drive without overdrive for a long period of time?

 

Mstng93SSP

You have a nice rear end there Dave.

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#2

• Sep 21, 2020

• #2

Usually that means the trans is done. Fluid and filter will be a waste of time and money.

Chris

 

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Thebigwhopp

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#3

• Sep 21, 2020

• #3

Mstng93SSP said:

Usually that means the trans is done. Fluid and filter will be a waste of time and money.

Chris

Click to expand...

Yeah but 1-3 still feel good so would I be fine just to drive without overdrive for a long period of time?

 

Mstng93SSP

You have a nice rear end there Dave.

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#4

• Sep 21, 2020

• #4

Hard to say. I drove one of my cars for several months with no overdrive and it didn't seem to cause any further issues. The freeway in D was a little obnoxious though.

 

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Thebigwhopp

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#5

• Sep 21, 2020

• #5

Yeah but with a 2:73 gear ratio it shouldn't be as a bad as a 4:10 ahah

 

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slow84lx

clean it good before insertion

Jul 3, 2005

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Sep 21, 2020

#6

• Sep 21, 2020

• #6

Most AOD's can be driven for a long time without OD before a total failure. Drive it until you can't. Nothing short of a rebuild is going to fix OD though. My F-150 is this way right now. Sucks on the highway so it stays in the garage.

 

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Thebigwhopp

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#7

• Sep 21, 2020

• #7

slow84lx said:

Most AOD's can be driven for a long time without OD before a total failure. Drive it until you can't. Nothing short of a rebuild is going to fix OD though. My F-150 is this way right now. Sucks on the highway so it stays in the garage.

Click to expand...

That's what I thought it's basically like a c4 now lol. With a 2:73 gear ratio will it still be bad on the highway at like 70-75?

 

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slow84lx

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#8

• Sep 21, 2020

• #8

It won't hurt anything but your gas mileage. The trans is already shot.

 

CarMichael Angelo

my rearend will smell so minty fresh,

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#9

• Sep 21, 2020

• #9

Thebigwhopp said:

Yeah but 1-3 still feel good so would I be fine just to drive without overdrive for a long period of time?

Click to expand...

1-3 are in the trans, OD is a clutch in the converter.

 

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Thebigwhopp

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#10

• Sep 21, 2020

• #10

slow84lx said:

It won't hurt anything but your gas mileage. The trans is already shot.

Click to expand...

these cars aren't know for gas mileage haha

 

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slow84lx

clean it good before insertion

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Dallas, TX

Sep 21, 2020

#11

• Sep 21, 2020

• #11

Lockup is a clutch in the convertor. The actual OD band is in the transmission.

...unless I misunderstand how the AOD transfers torque, which is possible, I'm no guru. I've taken one apart, watched video's, read a book, and everything. Even have 2 cores in storage.

Gas mileage can be mid-20's. Not bad for a V8 in the '80's.

 

90sickfox

Wasn't a pretty sight...and I've got big hands

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#12

• Sep 21, 2020

• #12

I drove a 700r4 for almost 2 years daily with only first and second gear. It was fun on the highway...didn't have to drop a gear to pass. It was in an Astro van so not the best gas mileage. How long it lasts is up to your particular transmission and your right foot.

 

KRUISR

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#13

• Sep 22, 2020

• #13

Have another thought on this... you say gears 1-3 work fine. At what RPMs do shifts occur if you are not hard on it, just going for an easy drive?

 

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Thebigwhopp

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Sep 22, 2020

#14

• Sep 22, 2020

• #14

KRUISR said:

Have another thought on this... you say gears 1-3 work fine. At what RPMs do shifts occur if you are not hard on it, just going for an easy drive?

Click to expand...

I just got the car so I'm not sure yet

 

KRUISR

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#15

• Sep 22, 2020

• #15

If you are not sure, how do you know it doesn't shift into OD?

 

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Thebigwhopp

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Sep 22, 2020

#16

• Sep 22, 2020

• #16

KRUISR said:

If you are not sure, how do you know it doesn't shift into OD?

Click to expand...

I just got the car drove it down the road shifting into 4th is like a second neutral

 

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Bird76Mojo

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Sep 26, 2020

#17

• Sep 26, 2020

• #17

Wouldn't it be worth checking the OD apply servo piston's o-ring, and making sure the OD band is still hooked to where it anchors? If you're doing a fluid/filter change anyway..

I do agree that the OD is probably cooked, although it could be the TV cable is out of adjustment which is what KRUISR was alluding to.. It was cooked on the one AOD I've owned, so I sold it for $200 (with a fresh shift kit, etc, in it) and went T5Z.