Changing auto trans Fluid AOD
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Changing auto trans Fluid AOD
I have a 93 F-150, with the AOD tranny, not the electronic one. I want to change the trans fluid and was trying to figure out if the converter can be drained. If so where is this drain? How do you get to it? How do you turn the converter to get to the plug if there is one? I just changed the engine oil, the plugs, air filter, PCV and breather filter. I took the truck to the beach this past weekend and turned in no better gas mileage than in traffic during the week. I got about 15 mpg. I am not complaining, it is after all, a pretty big truck. Is there anything in particular I should check? I thought I would be able to get around 18mpg with the cruise set to 70-75mph. I did inflate the tires properly. The plugs are the Bosch platinums, the air filter K+N, the oil is Amsoil 10w30. Thanks for your time,
regards,
Bryan
93 F-150 SC LWB 4x2 5.0 AOD
regards,
Bryan
93 F-150 SC LWB 4x2 5.0 AOD
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Changing auto trans Fluid AOD
I also have a 93 w AOD, 175,000 miles. I changed my trans fluid the first time at 70,000 and now about every 50,000. Unless you have a specific reason for trying to get every drop out, just drop the pan and filter, let it drain, put back and fill it up. If you insist on a complete fluid change, some dealers have equip to do a flush change. It involves connecting to your trans and introducing new fluid as the old is pumped out. I don't know how or when they change the filter.
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Joined: Jan 2001
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From: Central Illinois
Changing auto trans Fluid AOD
Well, I have the E40D, so it may be little different, but worth a shot...
Anyway, just in front of the tranny, on the bottom of the torque converter is a rubber plug. Pry out the plug with a screwdriver or something, and you will find a happy little drain screw inside the hole.
I would definitely recommend draining the converter when you change the trans. fluid. Even after removing the pan and draining the tranny, there will still be quite a lot of fluid in the torque converter. I would guess as much as 2-4 quarts in my experience. Not worth the effort of removing the pan and then not doing the simple task of emptying the torque converter.
I just changed mine a few weeks ago...here's my "post-mortem"
https://www.ford-trucks.com/dcforum/DCForumID39/1784.html
Hope this helps!
Bryan
Anyway, just in front of the tranny, on the bottom of the torque converter is a rubber plug. Pry out the plug with a screwdriver or something, and you will find a happy little drain screw inside the hole.
I would definitely recommend draining the converter when you change the trans. fluid. Even after removing the pan and draining the tranny, there will still be quite a lot of fluid in the torque converter. I would guess as much as 2-4 quarts in my experience. Not worth the effort of removing the pan and then not doing the simple task of emptying the torque converter.
I just changed mine a few weeks ago...here's my "post-mortem"
https://www.ford-trucks.com/dcforum/DCForumID39/1784.html
Hope this helps!
Bryan
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Changing auto trans Fluid AOD
How do you locate the drain hole? I understand where you said it was. Do you have to turn the converter, if you don't see it? Can you turn the converter? How do you do it? I am asking because I did not see the plug. But then again I did not look real hard. I seem to remember hearing something about aligning the converter.
regards,
Brayn
regards,
Brayn
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Joined: Mar 2001
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From: So Cal
Changing auto trans Fluid AOD
To locate the drain plug you need to first make sure the engine cannot start, pull the main coil wire, pull the ignition fuse whatever. Then put the tranny in neutral and keep the parking brake on and block the wheels. Then depending on whether you are a manly man or just a regular guy, you turn the TC by hand or use a TC wrench(Looks like a big C with teeth attached to a pry bar) or use a pry bar or whatever lever looks like it will doo the job to turn the TC.
Alternatively you could turn the engine from the front harmonic balencer/pulley. It should not be too difficult to turn the engine by hand. Or you could use one of those remote starting switches to "bump" the engine. Eventually you should see the drain. Note that some TC have the drain on the front of the TC, some on the bottom and some don't have a drain at all.
Good Luck,
Jim Henderson
Alternatively you could turn the engine from the front harmonic balencer/pulley. It should not be too difficult to turn the engine by hand. Or you could use one of those remote starting switches to "bump" the engine. Eventually you should see the drain. Note that some TC have the drain on the front of the TC, some on the bottom and some don't have a drain at all.
Good Luck,
Jim Henderson
