P2761 troubleshooting

extremecowboytec

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I just had a PPE 5th stage kit put in my Allison, and now I'm getting a P2671. I tried taking some electrical grease to the connection on the back of the tranny, but no luck.
Where should I start troubleshooting?


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extremecowboytec

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Good question about the builder, he's a friend in Michigan. I live in FL, so he said to see what I can do.
The truck runs and shifts great, no issues that I can tell. It's just annoying to see the light on


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Mike L.

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2007.5
Good question about the builder, he's a friend in Michigan. I live in FL, so he said to see what I can do.
The truck runs and shifts great, no issues that I can tell. It's just annoying to see the light on


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I suspect you have the TCC solenoid or the main mod solenoid disconnected. TCC solenoid is on the far left of the valve body ( driver side ) and the main mod solenoid is all the way on top of the valve body.
 

Awenta

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Did you check what Mike suggested?

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extremecowboytec

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I suspect you have the TCC solenoid or the main mod solenoid disconnected. TCC solenoid is on the far left of the valve body ( driver side ) and the main mod solenoid is all the way on top of the valve body.


Mike are you a magician?

I finally pulled dropped the pan, and found to my amazement that one of the solenoids was disconnected. Not sure if it's the one you where thinking but here's a picture.
071417e1da0e9100c8ad125110e7b55d.jpg


However, I also found a large amount of metal shavings. In some cases, half penny sized chunks.
Could that be because that solenoid wasn't hooked up, or do I have other issues with this tranny? I was getting code P0762, and she stuck in 2nd for a few mins, and then 4th for a few on the way home today.
9ae649703e9632b37ccb1c5aff708285.jpg
562a23f64a84c570648ef0a4c6fe79bc.jpg
cf1af560500bfe7ef74978891686662b.jpg

Should I put it back together and hope for the best?


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clrussell

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Sep 23, 2013
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Mike are you a magician?

I finally pulled dropped the pan, and found to my amazement that one of the solenoids was disconnected. Not sure if it's the one you where thinking but here's a picture.
071417e1da0e9100c8ad125110e7b55d.jpg


However, I also found a large amount of metal shavings. In some cases, half penny sized chunks.
Could that be because that solenoid wasn't hooked up, or do I have other issues with this tranny? I was getting code P0762, and she stuck in 2nd for a few mins, and then 4th for a few on the way home today.
9ae649703e9632b37ccb1c5aff708285.jpg
562a23f64a84c570648ef0a4c6fe79bc.jpg
cf1af560500bfe7ef74978891686662b.jpg

Should I put it back together and hope for the best?


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Uhh that no look good


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extremecowboytec

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That was the solenoid I suspected.

As far as the metal; I don't like it. For some reason it looks like a crushed magnet. See if it is magnatised.


I collected all the shavings and put them on a piece of paper so you can see about how much was in there. When I got them all in a little pile I didn't realize that most of them were actually very small.
3a9f03f4c1128017bda5aae45bec7b95.jpg

That's with about 1700 miles on it since build.


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Mike L.

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The material in the pictures looked like they are soft cast metal pieces. I'm going to take a guess here. Just maybe the plastic washer was not replaced over the .100 shim on the P2 planet. If so, this would cause a metal to metal contact on a rotating assembly and cause the metal that we see.
 

extremecowboytec

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The material in the pictures looked like they are soft cast metal pieces. I'm going to take a guess here. Just maybe the plastic washer was not replaced over the .100 shim on the P2 planet. If so, this would cause a metal to metal contact on a rotating assembly and cause the metal that we see.


Is has 2 tabs on it? I'm pretty sure I know which one you're talking about and yes we did replace that. (I watched him do most of the build and specifically remember that part)

I went on ahead and put everything back together though. Drove it for about 20 mins and got a P0741.
Possibly related?

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Mike L.

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Is has 2 tabs on it? I'm pretty sure I know which one you're talking about and yes we did replace that. (I watched him do most of the build and specifically remember that part)

I went on ahead and put everything back together though. Drove it for about 20 mins and got a P0741.
Possibly related?

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P0741 indicates that the converter clutch never applied. Unless something in the converter let loose or was not assembled correctly, or converter flow valve was stuck in the release position; shouldn't have anything to do with this.
 

extremecowboytec

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P0741 indicates that the converter clutch never applied. Unless something in the converter let loose or was not assembled correctly, or converter flow valve was stuck in the release position; shouldn't have anything to do with this.


Ok. I checked the fluid level and it was a little low, added another qt, and cleared the code...

Just to make double sure, the tcc solenoid being disconnected doesn't have anything to do with the shavings, correct?

I do agree with your previous statement, they do seem to be made of soft metal.


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