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02 F150 w/issues after trans exploded

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4 years 2 months ago #50663 by R85
Hey all. I have an 02 F150 4.6 2WD. About 3 weeks ago my trans exploded while driving on the freeway due to snap ring falling out of the u-joints and the yoke going nuts and took out the tailshaft. The internals of the trans were frozen too. Anyhow, all at the same time, my alternator went, and I have a misfire on bank 1 cylinders 2, 3, and 4. I also hear a “sputtering” at my feet where the Y-pipe is located and have a rich smell in the cabin. Guessing when the trans exploded some of the shrapnel probably went everywhere. On a visual inspection I couldn’t find anything, I have yet to do a smoke test.

Got the trans rebuilt and installed, changed the alternator with a Bosch unit and everything thing there is good. However I still have the misfires and the sputtering with rich smell. I stumped at this point as I don’t know how a bank can be affected but only 3 cylinders out of 4 on that side.

I wrote down the values from the live scan at idle.
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4 years 2 months ago #50676 by Tyler
Replied by Tyler on topic 02 F150 w/issues after trans exploded
Were your trim numbers taken at idle in Closed Loop? If so, they look excellent. Disregard the SHRTFT11/12/21/22 values - they're not your true short term values. The only ones you really care about are the SHRTFT1/2 and LONGFT1/2.

What makes you think those cylinders are misfiring, exactly? Fault codes? Power balance?

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4 years 2 months ago - 4 years 2 months ago #50677 by R85
Replied by R85 on topic 02 F150 w/issues after trans exploded

Were your trim numbers taken at idle in Closed Loop? If so, they look excellent. Disregard the SHRTFT11/12/21/22 values - they're not your true short term values. The only ones you really care about are the SHRTFT1/2 and LONGFT1/2.

What makes you think those cylinders are misfiring, exactly? Fault codes? Power balance?
 
Yes it was in closed loop. I couldn’t add the picture of the Modis Edge because the file was too large but there are misfires in cylinders 2, 3, and 4. After a 7 min drive there were 244 misfires in each of those aforementioned cylinders.
Last edit: 4 years 2 months ago by Tyler.

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4 years 2 months ago #50680 by Tyler
Replied by Tyler on topic 02 F150 w/issues after trans exploded
Interesting. :huh: Could you send me the files directly? wrenchturnsyou@gmail.com

If you're flagging misses on #2 ,3 and 4, then I'd argue that there's a problem with the entire bank, even if the misfire monitor isn't flagging #1.

How do the fuel trims behave during a test drive?

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4 years 2 months ago #50682 by R85
Replied by R85 on topic 02 F150 w/issues after trans exploded

Interesting. :huh: Could you send me the files directly? wrenchturnsyou@gmail.com

If you're flagging misses on #2 ,3 and 4, then I'd argue that there's a problem with the entire bank, even if the misfire monitor isn't flagging #1.

How do the fuel trims behave during a test drive?


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