Transmission / Overdrive: Transmission noise

[2R5]

I have a automatic that when it sits for a long period of time it will amke a whinning noise when idioling but if you put it in nutreul it lets up . The transmission woks just fine but this noise worrys me. Anyone know what it is and if I can do something about it ?
Will it hurt the transmission if I ignore it?
If I use the car on a daily basis it doesn't seem to be there , at least not as much
........any ideas?

[gordr]

If the throttle valve linkage is adjusted wrong, or has shifted due to soggy motor mounts, you can get a buzzing noise kind of like a bee in a tin can. Some folks might call that a whine. Transmission "thinks" your foot is into the throttle, when it isn't; generates too much pump pressure, and excess bleeds out relief valve, causing buzz.

Lengthening the the throttle valve linkage rod by a couple of turns on the clevis should make it go away, if this is the cause. If it does, have a good close look at the rubber mounts under the bellhousing, they may well be shot. Keep a record of how many turns you lengthen the rod, and take those turns back out of it upon replacing the mounts.

[jg61hawk]

Check the fluid level when cold and then again when warm. My Hawk leaks after 2 weeks of sitting. It generally is low and that noise has something to do with fluid level and or what was just written above.

[2R5]

Thats the sound!
I have recently done this car and I replaced all the mounts, I will try your suggestion on the linkage. Thanks for your input, will let you know if this makes a differnce or not.

[jg61hawk]

Put "transmission buzz" in the advanced search box at the top of this page. You'll see you are not alone and there is the answer.

[ROADRACELARK]

Remember when checking the A/T fluid level, the transmission needs to be warmed up....drive it a few miles....then check the fluid level, with the car on a level surface, engine running and the transmission in DRIVE. Don't forget to apply the emergency brake or use a brick or chock Hope this helps.

Dan Miller
Auburn, GA

[2R5]

This is the late model transmission , with oil cooler lines. It doesn't have the same linkage as say a 64 automatic , but has a cable housing that goes into the tranny . It looks to me the only way to lengthen the cable would be at the bracket on the carb, is this correct?

[Warren Webb]

Thats the one.

[2R5]

Thanks Gordr , 2 turns seemed to do the trick. Really won't be able to tell for sure until the spring weather comes along and we can get it outside.

[SN-60]

A Flightomatic Transmission will 'tell You' when it's low on fluid by that buzz!

[2R5]

It wasn't low on oil but that cable was out of ajustment .

[tbirdtbird]

this is what makes this site the greatest!

[2R5]

Got a chance this week to get the car outside and really warm it up ...that noise came back , it I disconnect the tranny cable at the carb and let it shorten up the buzzing stops but as soon as I pull the cable a little bit it starts right up again......any suggestions ?
I'm not sure just what that cable that goes into the tranny does but I suspect its important or it wouldn't be there.