I'm looking for some help. I recently purchased the last 09' F250 5.4(new) on the lot. Hell of a deal when it sits on the lot that long by the way......Anyway....I waited 1000k before towing with it, then I towed 2 cubic yards of mulch. That is when I noticed a slight rattle coming from underneath.

Well, I began to pay more attention and this is when it happens. The transmission has to get up to temp. Once at temp and you accelerate you will hear a rattle at 1900rpm which sounds like BB's in a can. I played around a little and noticed you will get the rattle in Neutral and Park all at 1900rpm. It happened idling once but then went away.

Now, I drive a crown vic police interceptor for a living(take a guess what i do) and it was recalled due to the heat shields on the cats having a rattle also. So that is what I assumed it was. Took it to the dealer, they said they found a loose shield, fixed it.........nope........still doin it.

So I put it on a lift and had an exhaust specialist look at it. With it just idiling you could hear the sound faintly coming from the larger portion of the transmission(no clue what part of the transmission this is) so anyway now I'm concerned it could be a transmission issue.

The transmission shifts smoothly, not all the time sometime's harder than others but I figured that because it's a truck.

Does anyone have any idea's or suggestions. I just hate having to keep going to the dealer and have them thinking I'm nuts.

Thanks in advance!!!

 

When I had my 04 Super Duty I had a similer raddle and it ended up being the shield on the front of the transmission where the torque converter and engine meet. A little foam padding and it was all fixed. I have read other posts on here who had the same raddle as I did and that is how I found out about it. Simple 5 minute fix.

 

Have a 03 v-10 with a manual trans that rattled at 1700 rpm, only rattled in gear and moving, I pryed the mid plate out stuffed a small piece of rubber in rattle has been history
for 3 years.

 

What type of foam? And could you be more specific on how to do the fix? I'm a novice at working on vehicles. Thanks

 

Pryed mid plate away from the trans bell housing with a flat blade screwdriver stuffed a kitchen cabinet door bumper between the trans and mid plate.
Rick.

 

For an automatic trans. remove the torque convertor bolt access cover for a test drive only. If no rattle, install stick on door seal found in home centers and hardwear stores and
reinstall cover. Hope it works.
Rick.

 

i bet its the inspection cover rattling...

quite common among super duties actually..

give the bottom area of it a slight twist with a screwdriver to create a bit more gap..should fix it.

do a search for "inspection cover rattle" you should find some threads discussing the problem/fix i bet.

 

I've got an 09 with a 5.4 that's been doing the same thing. I only noticed it while I was in the drive thru. At least it's not anything bad and it's an easy fix.

 

I have a 2001 F-250, w/V10 71000 miles. I have been noticing this rattling sound when I shift to reverse or drive, but not in park or neutral. I just went to my dealer, they said that they have a service bulliten out on this and that the torque converter is the problem. So I have an appointment to get it replaced. Luckily I bought an extended warrenty which will cover the replacement. But reading here I think I should pull the inspection sheild and see if it still rattles.

What do you think? Is this a common problem with the converter.

Thanks,
Shawn R.

 

I have 2010 5.4 auto, 4x4 f350 c/c w/ same rattle. I took cover off and had same rattle, gonna take it off again to be sure.

 

We have had a lot of problems with the cats in the later gas superdutys at work rattling when heated up. It requires replacing the y pipe assembly to repair.

 

carltonwebb, I hope it is only the cats. I can live with the noise if that is all it is. My concern is that the rattle is from within the tranny. My rattle seems to be at 750 RPM. What trucks did you experience this on? I have 2010 F350 screw. 5.4 auto 4x4. It is hard to duplicate at times, and I am afraid the dealer is going to dismiss it saying they don't hear it.

 

We have had some flexplate issues on the 09's. No mechanical problems yet with the 2010 models but we just started getting the superduty 2010 's towards the end of summer so its a little early still.

 

Guess what, I checked my brother's in laws 2010 F150, his does the exact same thing, same noise, must be characteristic of tranny or 5.4 engine.