Torque converter noise (I think) - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

jsuthers · 12-08-2009, 07:40

Well this has been going on for awhile now and im not really worried im just curious..

Well what im thinking is my TC seems to make a buzzing like sound ONLY when in park and neutral (shifts fine and drives fine) its kidna like a fading sound to it will get louder and quieter and louder quieter ect. ect.

any idea what it could be ( no cel light or pending codes)

**Bert** · 12-08-2009, 08:16

I've not heard one do that. It'd be hard to tell without hearing it. Maybe you'll have to take it to someone to listen to it, unless someone hear has experience with the noise.

jsuthers · 12-08-2009, 09:46

update.... while thinking about it after driving about 30min I stepped outside of my car... and I couldn't hear it....

so im assuming it goes away after the car/tranny heats up...

if that helps

**Bert** · 12-08-2009, 09:55

It could also be that the RPM slightly changes in gear. Also the engine torques over when in gear. Hope it goes away for you. You learned a lot in the over the times I've read your posts. Good for you.

jsuthers · 12-08-2009, 09:58

ya im trying :) mechanics cost SOOO much and I think its better anyways to do it yourself :)

ya it sounds perfectly fine unless im in park or neutral,,, im going to upload a video as soon as my car cools down

thank you

jsuthers · 12-09-2009, 06:43

weird car.... isn't making the noise now.... so kindof hard to record it but it doesnt seem to hurt anything... so maybe it will when I change my tranny fluid (can I just pull the plug on the converter or do I have to pull the pan as well (aside from changing the filter) and will it hurt my car doing a flush

**Bert** · 12-09-2009, 08:05

If you drop the pan, change the filter, and drain the torque convertor, it'll take about 10 ½ qts. That's almost all the fluid it holds. I wouldn't do anything else. Make sure you use Mercon V. It costs a little more but worth it. After you drain everthing and put the pan back on, put 8 qts in and start it. Then start it and 2½ more. then check it when it gets hot. If you touch the stick and it doesn't almost burn your fingers, leave it in the add mark area. Recheck it after driving it again.

jsuthers · 12-09-2009, 09:47

I trust you 100% but I heard that with transmission with over 60k miles on it you down want to do a flush (the transmission becomes dependent on the sludge...) how would that work on a transmission with 180k lol) or is that only for certain types of transmissions??

dont know where i heard that... but I did somewhere... maybe it was my mechanic when I used to take my car there.... not sure tho

**Bert** · 12-09-2009, 10:09

I would do it the way I mentioned no matter what the mileage. I've done ti on cars almost 300,000 miles. If something is going to happen to it, it will no matter what. The fluid breaks down after heating and running a long time. Acid forms in it too.

jsuthers · 12-09-2009, 10:22

ok thank you very much :-D I have learned so much from you lol

Ill end up doing it after this season.... dont a big fan of working in the cold :-D