First time poster here! A little background, I drive a 2008 edge with ~85,000 miles for my main mode of transportation. I have never had transmission issues before and the car has been great up to this point. Likewise, the vehicle was purchased new from the dealer.
Two weekends ago my GF and I take a short road trip of about 60miles. On the way back, while cruising at about 75mph on the highway, the speedometer without warning drops to zero, the odometer reads "------" and the display signals an ODO error. A quick google search reveals that this is textbook transmission sensors issues on Edges and that slowing down will put the car into a safe mode (5th gear supposedly?). Given that apple maps was signaling traffic congestion ahead I decided to pull off while we could and call a tow truck. I want to add that the "thud" you get shifting between park/drive/reverse is really strong! Feels like you are hitting a speed bump or something....WOW
The next morning I called in sick and spent half a day trying to get a quote to replace the OSS and TSS sensor. Finally settled on a shop that came in at ~$715 parts plus labor and had mostly good reviews (~4.5/5). Had it towed over there, shop diagnosed the OSS as issue and agreed that it would be wise to include the TSS as well, 3 days later (Ford sent the wrong part apparently so it took longer) I get my car back.
Now, when chatting with the mechanic they indicated that there were small metal shavings/debris in the pan when they drained the fluid. Note, I have never had the transmission flushed or drained before. I asked how large and they said small, but just large enough that you could see and feel them. They had the opinion that the particles in the fluid might have caused the sensors to go out and this might happen again (covering there ass maybe who knows?).
So at this point I am starting to worry that there are some serious transmission issues. I have been hearing for about a month what I can only described as a knocking/marbles rolling. It only happens in gear and only happens under load/acceleration around 30-40mph.
Fast forward to this Wednesday, I am driving home on the freeway and I get a very small but noticeable thud, wrench light comes on, and the car becomes more sluggish. I do not loose the speedometer. I drive straight to the shop, light turns off 1/4mile away and the car comes back to life. They scan the computer, do some tests and drive it around....they find nothing.
Thursday I am noticing some weird behavior switching between drive and reverse (very small thud) and also what looks like leaking. (To be fair I am on edge at this point and noticing everything so it may have been nothing). The knocking was particularly bad that day (colder out) so I take it back. Mechanic concludes that the knocking noise is from the engine but as far as they can tell, nothing it wrong with the transmission. He says to bring it after work Friday so that can diagnose the engine noise Saturday.
I drive to work today and get another very small thud when pulling into the parking lot. Wrench light comes on, when I turn the car off/on the light goes away and the car drives normally.
Fast forward to this afternoon, sitting in some traffic and the wrench light comes on again accompanied by the car going into safe mode AND the check engine light is now on. It seems to get stuck in a low gear with noticeable gear wine. I pull off and the car pops into the safe mode gear so I drive to the shop. Again, the light turns off and the car returns to normal just before I get there. The mechanic can't seem to replicate it.
This seems to happen almost exclusively in 1st gear with really really low pressure on the gas pedal, i.e. pulling into a parking lot; crawling in heavy traffic; ect.
Would love to hear peoples thoughts on this. Is my transmission on its way out? Is the engine issue and transmission issue related? Just trying to become more educated on the topic.
Likewise, the cherry on the topping is that this had to happen the week before thanksgiving!!!! I am supposed to drive LA to PHX next Wednesday night.