igokom10
Member
Short story: after having my valve body replaced ( along with fresh fluid, filter, tcm reprogram.) less than 100 miles later, was driving on highway and noticed it wouldn’t go into 10th gear after multiple tries, few Seconds after “powertrain malfunction” displayed. I pulled up transmission temp on the display it was around 280, by the time I pulled over safely it was 300 degrees. Was at 300 for a few seconds. Towed it back to the shop where I got the valve body replaced, serviced less than 100 miles go. Is 300 degrees, although for a brief second enough to cause enough damage to warrant a rebuild/replacement?
Long story: bought the car 2 months ago, with 84k, currently has 86k. Have the heavy duty tow package. Noticed some weird shifting from 3-5, sometimes would take 1-2 tries to get into 10 Gear, clunk/slight delay from P to D, Twice under very light throttle, tranny went from 3rd straight to 8th, rmps went super high, and car wouldn’t move. Pulled over, let it downshift to 1st and drove again no issues (besides what I listed above.) over all the shifts seemed bit clunky about 50% of the time, the other 50%, drove decent. Didn’t throw and codes. Around town driving temp was 215-220, I would hear the fan constantly trying to cool the unit down. so I finally decided to take it in to a transmission shop.
upon telling the tech my symptoms, he said 9/10 times it’s a valve body, didn’t even open it up, just said that’s what he would do. Took his word, he couldn’t source one (back ordered till April/may) I found one at a dealership in stock. Made the drive 2 hours away, picked it up and dropped it off for him to install. Day later he calls says he swapped over the new valve body but the 3-5 clunk is still there…said the oil was in great condition with no burning or shavings. He recommended I take it to a dealership see if they could diagnose that 3-5 clunk. I picked the car up and drove it home. It felt much better, shifting was more crisp and noticed it went into 10th gear all the time and occasional the 3-5 clunk was there but much much better than before. I was ok leaving it as is if dealership couldn’t diagnose it.
Day later I’m on the highway and notice it’s having a hard time going into 10. After a few attempts (3-4) the “power train malfunction” light came on, by the time I pulled over safely the transmission temp was 300, with ATF leaking from the bottom.
Towed it to his shop, thinking it was something they had done.
He calls me the next morning, the leaking oil was from the vent, and it came out due to the transmission heating up. He said he dropped the pan and again no shavings or any sign of anything catastrophic. Said the put fluid back in, drove it and it drove like before but still needs to figure out why it over heated.
He is dropping the transmission Tommorow and we’ll see what the inside looks like. I’m guessing if the temp got that high, a rebuild/swap is inevitable. Also from my research the CDF drum is a common issue. If that is fairly Would that cause the transmission to over heat?
Could they have made a mistake in installing the valve body that made it over heat?
I found a tranny from a 2018 f150 3.5 (floor/dial shift) few hours away with less than 20k miles for a good price ($2500)
Would that be a direct swap? From 2018 f150 to 2018 expedition.
I’m almost inclined and swapping out the whole thing, expecially because now it was overheated.
If you’ve read this far, you’re a champ and I’ll buy you a beer if you respond.
Thanks !!
Long story: bought the car 2 months ago, with 84k, currently has 86k. Have the heavy duty tow package. Noticed some weird shifting from 3-5, sometimes would take 1-2 tries to get into 10 Gear, clunk/slight delay from P to D, Twice under very light throttle, tranny went from 3rd straight to 8th, rmps went super high, and car wouldn’t move. Pulled over, let it downshift to 1st and drove again no issues (besides what I listed above.) over all the shifts seemed bit clunky about 50% of the time, the other 50%, drove decent. Didn’t throw and codes. Around town driving temp was 215-220, I would hear the fan constantly trying to cool the unit down. so I finally decided to take it in to a transmission shop.
upon telling the tech my symptoms, he said 9/10 times it’s a valve body, didn’t even open it up, just said that’s what he would do. Took his word, he couldn’t source one (back ordered till April/may) I found one at a dealership in stock. Made the drive 2 hours away, picked it up and dropped it off for him to install. Day later he calls says he swapped over the new valve body but the 3-5 clunk is still there…said the oil was in great condition with no burning or shavings. He recommended I take it to a dealership see if they could diagnose that 3-5 clunk. I picked the car up and drove it home. It felt much better, shifting was more crisp and noticed it went into 10th gear all the time and occasional the 3-5 clunk was there but much much better than before. I was ok leaving it as is if dealership couldn’t diagnose it.
Day later I’m on the highway and notice it’s having a hard time going into 10. After a few attempts (3-4) the “power train malfunction” light came on, by the time I pulled over safely the transmission temp was 300, with ATF leaking from the bottom.
Towed it to his shop, thinking it was something they had done.
He calls me the next morning, the leaking oil was from the vent, and it came out due to the transmission heating up. He said he dropped the pan and again no shavings or any sign of anything catastrophic. Said the put fluid back in, drove it and it drove like before but still needs to figure out why it over heated.
He is dropping the transmission Tommorow and we’ll see what the inside looks like. I’m guessing if the temp got that high, a rebuild/swap is inevitable. Also from my research the CDF drum is a common issue. If that is fairly Would that cause the transmission to over heat?
Could they have made a mistake in installing the valve body that made it over heat?
I found a tranny from a 2018 f150 3.5 (floor/dial shift) few hours away with less than 20k miles for a good price ($2500)
Would that be a direct swap? From 2018 f150 to 2018 expedition.
I’m almost inclined and swapping out the whole thing, expecially because now it was overheated.
If you’ve read this far, you’re a champ and I’ll buy you a beer if you respond.
Thanks !!
