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Old 08-15-2010, 12:38 PM
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Transmission Slip?

Okay, so on my Looney Tune, when the truck is cold, every once in a while the truck will jump from 2000-2075 RPM's before shifting into 3rd or 4th. Is this normal? And how is the transmission supposed to feel when shifting? WIth the Looney Tune it will kind of "suck back" when shifting, but it shifts similar to stock. Should I go with a Innovative tune with the firm shifts to lengthen the life of the tranny?

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Old 08-15-2010, 07:22 PM
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Old 08-17-2010, 02:14 PM
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Old 08-17-2010, 02:59 PM
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Sounds like its defueling..good idea as these trans need to 100% disengage a gear before engaging the next.
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Old 08-17-2010, 03:17 PM
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Okay, so I understand about the defueling, but what about the raise in RPM's? Would a firmer shifting tune (like Innovative) keep it from slipping? I'm about to get a bunch of Innovative's tunes, as Eric seems to really know what is best for these trucks.
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Old 08-29-2010, 12:36 PM
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Okay guys, so even on my stock tune my transmission is slipping about 100 RPM's every once in a while, I think from 2-3. Is my transmission on it's way out?

The transmission fluid hasn't been changed in probably 90k, so I'm assuming this is what caused it. It was scheduled to get the fluid changed Friday, but it got bumped back to Tuesday. Will this help at all?

Would replacing the Torque Converter solve the problem? How much do they run? Or do I need a new reman from Ford? How much do they run?

Would a tune with firmer shifts (EX: Innovative's tunes) help solve this?

Or should I just sell my truck? Everybody at my dealership worships my truck, and they said they'd put it in the front on the hill, if one of the workers didn't buy it first. LOL

How much do you think I could get out of it? I'd wanna sell it before the transmission completely goes if I don't replace it. It only slips while cold now.

I'd probably buy this one if I sold it, but idk if I should sell it or not.
2005 F250 Powerstroke - Powerstroke Nation
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