Noise

[JUGGERNAUT]

Ok so I bought the truck 3 years ago and I have put 80,000 miles on it (total 186,000 miles on the truck) when I bought it, it had a noise that I heir on allot of the 99's it is a loud rattling. It doesn’t do it at high altitude and now I installed a tcc lockup switch and as soon as I lock it up it stops. A long time ago I looked up the tech service bulletins and found one that sounded similar tom the noise but it had to do with the fuel lines so that’s what I thought, until I out the switch in.
Any input on what this is??

[99Smokin73Stroker]

I've heard that it's actually a "loud" converter that Ford used on those years. I had the little cover off the bottom of the tranny that looks right in at the TC once and started it got back underneath and the sound was very loud, almost hurt my ears. When I went to sell it one guy said I had a cracked flexplate, but the sound was the same as when I bought it 35k earlier....and if the flexplate was cracked it would have destroyed istelf a lot earlier than 35k.

[djsdiesel]

it is torque converter rattle, ford says it won't hurt it, but anything making noise IMO is going to break sooner or later, Fords test for this is to lock up the converter if the noise goes away then it's the converter. It should be just 99's but if your tranny was rebuilt in that time frame then it most likely has that torque converter.

[JUGGERNAUT]

Thanks i guess its somthing else i will have to save for.

[ipz2222]

It's called a dual clutch converter, 2 lockup clutches, and it does rattle as it gets worn. If not replaced, it will eventually kill itself and the trans. There are aftermarket converters available with that part of the converter made of billett steel. Much better than Ford's.

[99Smokin73Stroker]

It must take a long time, cuz it sounded the same when I bought it with 112k until I sold it at 147k...

[JUGGERNAUT]

My truck had 99,000 on it when I got it and I now have 169,000 still going good just noisy

[99Smokin73Stroker]

Yeah when I went to sell mine when the guy told me that my flexplate was cracked and then tried to say he could tell from the noise I almost told him to lay off the bowl

[JUGGERNAUT]

I was worried about it when I first noticed it but I have heird quite a few with the same noise so I quit worrying Sure would like to get rid of it.

[99Smokin73Stroker]

buy a performance converter!