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Aluminum shards in Trans Pan

 
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Old 11 Dec 2015, 12:09 pm
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Default Aluminum shards in Trans Pan

Good day all,

I've often visited this site and have always found great topics.

Car will not shift out of first gear. I was trying to do all I could before taking it to get major work done. I can't figure out where these curved aluminum shards, about 6 of them and the longest being about 3 inches, came from. They are about 1/4 inch thick. I found them lying in my tranny pan as I was changing the oil and filter.

Took the pieces in a sandwich bag to a transmission guy that my bro-in-law knows and he said it could have came from the drum inside.

Anyone ever run into this? I'll be asking at the dealer later today after work.

Thanks.
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Old 11 Dec 2015, 01:41 pm
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Default Re: Aluminum shards in Trans Pan

Are there really aluminum, or are they steel? You might take a magnet and see.

The reason I say that is that one of the more common failures of these transmissions is to shear the teeth out of the sun gear. And I think some folks call the sun gear a drum. It happens when you have weak pressure and are shifting from third to fourth if I remember right. After that, the transmission still pulls but it will be stuck in limp mode and will not shift.

I used to have one in a bucket of left over tranny parts. But I don't any more. Just put 41TE sun gear in Google images and you can see some photos.
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Old 11 Dec 2015, 02:14 pm
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Default Re: Aluminum shards in Trans Pan

It is aluminum, the magnet in the pan wouldn't pick them up. I tried. I failed to mention it is automatic. And I at first thought they looked like spline teeth but I didn't think a gearshaft would be made with aluminum teeth. But that's just me assuming.

I'll check that out though, thanks a lot.

When this initially happened I changed out the output speed sensor thinking that might be it. I had to order the input speed sensor and wait for it to arrive. As I changed the output sensor I also removed the input one and checked it and found it dirty. I cleaned it and reinstalled it. It ran fine after that for two days then it happened again and that's why I dove deeper into it.
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Old 11 Dec 2015, 02:25 pm
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Default Re: Aluminum shards in Trans Pan

Anything beyond fine flakes is time to tear down the transmission. But I am sure your transmission shop already advised this.


Most better or Performance transmission shops shop consider the A604/41TE a basket case transmission.

The most common failure is the Torque converter on these.
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Old 11 Dec 2015, 02:43 pm
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Default Re: Aluminum shards in Trans Pan

Are you getting any transmission trouble codes?
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Old 11 Dec 2015, 03:35 pm
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Default Re: Aluminum shards in Trans Pan

Yes. P0700, which when I asked was told it's a general reference to the transmission. Nothing particularly specific.
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Old 11 Dec 2015, 03:38 pm
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Default Re: Aluminum shards in Trans Pan

Quote:
Originally Posted by CoffeeMuggerChugger View Post
Yes. P0700, which when I asked was told it's a general reference to the transmission. Nothing particularly specific.
a better scanner (i'm spoiled) will give you specific codes, not just the 0700. see here:



either way... you have big chunks of metal and a trans guy telling you what likely broke. IMO you should be focusing on teardown + getting parts or a replacement instead of looking for hopes and dreams that it'll be a simple or cheap fix.

Last edited by rob342; 11 Dec 2015 at 03:43 pm.
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Old 11 Dec 2015, 03:55 pm
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Default Re: Aluminum shards in Trans Pan

Yea, I am. I've past the state of denial, haha! I will see the dealer today and get a quote. Nice scanner, by the way. I stay away from all Snap-On trucks because I never walk out with just the tool I was looking for. It's a toy store for big kids.
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Old 11 Dec 2015, 03:57 pm
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Default Re: Aluminum shards in Trans Pan

Oh, and I will share with you guys what I learn.

Thanks a lot all.
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Old 11 Dec 2015, 04:22 pm
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Default Re: Aluminum shards in Trans Pan

Quote:
Originally Posted by CoffeeMuggerChugger View Post
Yea, I am. I've past the state of denial, haha! .
i can relate. i've blown up every automatic i've ever owned. i drive only stick now and i've found when they show signs of breaking, they're generally still fixable.

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first gear, transmission, transmission fluid, transmission pan, transmission problems


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