fordomatic problem


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By jetlag - 16 Years Ago
a friend had his 55 tbird fordo rebuilt and now it pumps oil out filler when warmed up

any ideas readers ? ( not a nice auto to remove)

By paul2748 - 16 Years Ago
Replace with a C4??Smile
By PF Arcand - 16 Years Ago
Jet: How long ago was the rebuilt? Can he return it? Is the trans cooler hooked up & working? (however it may be air cooled) Sounds like the trans shop screwed up...but?
By Hoosier Hurricane - 16 Years Ago
If the case vent is plugged it may cause fluid to come out the filler.  But like Paul says, the shop that did the overhaul should be contacted.
By Doug T - 16 Years Ago
The dipstick/fill tube goes into the trans pan.  This point is under the normal fluid level of the transmission.  There is no connection to any kind of pump so the only way for fluid to come back up the tube is an overpressure in the housing.  This squares with your discription that it happens when the trany is warmed up.  So John's suggestion that the vent it plugged is a good place to start.  There might also have too little fluid in the trany.  Without a vent, as the fluid is poured down the tube it will stop flowing when the air can no longer escape up the tube.  The vent is on the right side of the trany and on my truck is a piece of 5/16 steel tube that is open ended. The T bird is probably different but should be located in the same place.

All of which says the trany shop has to stand up and make it right.  

By PWH42 - 16 Years Ago
I have 56 FOM and a55

I have a 55 FOM and 56 FOM that both do that UNLESS I put the dipstick in backwards.If the stick is in the normal way,it will blow out about 6 inches and then puke out some oil.These are both very low mileage original transmissions that have never been apart,but work perfectly,except for the puking.Weird,huh?

By 56fairlanepost - 16 Years Ago
to 55 thunderboy,you could have a torque converter seal blown out.i had that problem when i got my 56 fairlane and after pulling all the sheet metal off examined the leak at the converter halves.you can replace that large o-ring or it may be advisible to reseal the pump and tailshaft while you are at it.that is what i did and am completely satisfied with the outcome.personnally i would stay with the fordomatic rather than switch it out to a c4,just my opinion.jim
By PF Arcand - 16 Years Ago
I don't have an answer for the original question, but the reference to using type F fluid caught my attention. I know the type F containers say to use it in most pre 1976 Ford transmissions, but my 57 sticker says type A,which I believe has now morphed into Decron III. Am I correct? Although I doubt using type F would cause the boil out problems discussed.
By 56fairlanepost - 16 Years Ago
dextron 111 is what is recommended,i definitely would not recommend using f type
By oldcarmark - 16 Years Ago
This topic was discussed awhile ago.When I worked at the Ford dealer parts counter we were told to use "F"where "A"was used previously.On the last discussion apparentlÿ "A" can still be purchased from some suppliers.My understanding is that the Dextron series of fluid is more "slippery" for smoother shifts.I would not use it in mine where Ä""or "F" was used before.Just my opinion.