Clueless

[mossyoak009]

Tonight on my commute my truck stuttered and my wrench light came on. I was almost to my destination when the truck slammed down into 4th gear.

It remained stuck in 4th. So I got where I was going, put the truck in reverse and it wouldnt shift out of neutral. There was a small puddle of something on the ground where I was parked. I assume tranny fluid?

I shut the truck off and then it wouldn't start. Agreed a few minutes it finally started so I went for a drive. It wouldn't shift out of 4th until it slammed down and got stuck in 3rd. It still will not go into reverse.

I'm taking tmr off to try and figure it out.

Does anybody PLEASE have any suggestions of things to try? My guess is something with the computer or torque converter?? I don't know

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[travisH3]

Do you have any way to pull codes and post them up?

[Doss]

Yeah, we're going to need some codes. Are you deleted/tuned?

[mossyoak009]

Negative all stock right now. Except for an intake


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[drewactual]

have you determined what that puddle was yet?

what was your transmissions temperature when all of this was happening?

you didn't by chance run over something in the road previous to this, or been off road?

[mossyoak009]

Originally Posted by drewactual

have you determined what that puddle was yet?

what was your transmissions temperature when all of this was happening?

you didn't by chance run over something in the road previous to this, or been off road?

No. I'm thinking the puddle was from a car that was previously parked there. Idk my tranny temp. And no I don't think I hit anything. But I could have hit a block of ice or slushy snow. I'm in northern Ohio and I work for ODOT so I drive in bad weather constantly.

I think I'm going to go out and unhook the batteries for a while and see if it will reboot the computer to c if that's the problem.

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[drewactual]

I was focusing on the lines-to-cooler, and thinking one may have been injured or ruptured- like, something hit them or they are bent/kinked..

it sounds like you've lost hydraulic pressure, is the basis of my concern..

edited to add: there is a thermostatically controlled valve in the transmission that diverts 90% of flow back to the transmission when operating temperatures have not reached 165*, and allows 10% to circulate to the cooler..

here are a few "If's":

If that valve is clogged up with debris, it stands to reason that more than 90* of the flow is being constricted
If that valve isn't allowing flow to circulate, the transmission will get hot internally while having nice cool oil on the other side of the valve- and if the transmission is overheating internally, it will do funky things.. And, it's possible the transmission will starve for fluid to- which could also be the cause of your situation...

I don't know where the temperature sensor/sender is located in these things.. it 'may' be in such a location that a reading form it isn't telling the true story of it's condition.. if it's on the hot side (exiting the trans heading toward cooler) you'll see it on the dash gauge.. if it's 'after' the thermostatic valve, you may not see the temperature on the dash..

all the same, from what you've described it seems to me you've lost pressure somewhere.. an external leak would be easy in this case- but if you're losing flow due to an internal valve, then that can be a booger to figure.. If I'm not crazy, I think you can get a snap-on scanner hooked up that monitors pressures.. that would be a good start if there is nothing obvious (like a puddle or a kink)..

[mossyoak009]

Okay. I really appreciate you taking the time to explain that to me. I have almost no experience with transmissions so I'm blind about this. I think I'll call a ford dealer. Or should I just call a transmission shop?

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[drewactual]

something along those lines would be my guess, is all.. you're going to have to pull those codes to be able to figure out your issue in particular.. it just sounds to me, based on what you've shared, that it is a flow issue...

if you've got a warranty, I'd head to the dealer.. if not, I'd find a reputable transmission shop to work with..

[mossyoak009]

Yeah I'm heading to the only tranny shop around this afternoon


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