07 Sport Trac large puddle now throwing several lights

[DSport]

Hey everyone been having a lot of rain down here in Florida. Was heading down a gravel road at 3mph when I hit a very deep hole in water, enough to knock my alignment out. Checked under the truck and it splashed up at least to the muffler.

That was yesterday, it now has been throwing the Check engine light, traction control, wrench, and airbag light and then will refuse to upshift past whatever the last gear I was in.

This all happens randomly while driving with no prior warning. I have had the transmission rebuilt 2,000 miles ago at 126,000. It also has an issue when entering first gear like a big clunk like you’ve been rear ended ever since the rebuild. I think it’s rear driveshaft

limited V8 4x4 128,000 miles

 

[J_C]

Put a code scanner on it, ideally one capable of the Ford-specific codes in realtime, rather than only OBD2 but if OBD2 is all you have, that's a start.

Did the entire engine compartment get wet? You may have one or more electrical connectors fouled or now corroded. One thing to try is unplugging, spraying contact cleaner and replugging any bulk connectors towards the top of the engine bay, probably two of them near the firewall if like prior generation explorers, then move on to other connectors, where to start depending on the trouble codes set.

While unplugged, it also helps to apply a fresh, light coat of dielectric grease around the perimeter of the seal on the male connector side, or if you're going to be driving through more large puddles flooded areas a bit more than a light coat.

 

[Mbrooks420]

Take the transmission back to the rebuilder, and have them fix the driveshaft. Otherwise, you’ll be taking it back for a rebuild.

 

[DSport]

Put a code scanner on it, ideally one capable of the Ford-specific codes in realtime, rather than only OBD2 but if OBD2 is all you have, that's a start.

Did the entire engine compartment get wet? You may have one or more electrical connectors fouled or now corroded. One thing to try is unplugging, spraying contact cleaner and replugging any bulk connectors towards the top of the engine bay, probably two of them near the firewall if like prior generation explorers, then move on to other connectors, where to start depending on the trouble codes set.

While unplugged, it also helps to apply a fresh, light coat of dielectric grease around the perimeter of the seal on the male connector side, or if you're going to be driving through more large puddles flooded areas a bit more than a light coat.

Took it to autozone came back the TCM is losing communication with the transmission. Didn’t soak the engine compartment by any means was only going 3 mph because I knew this road was most likely washed out. Error codes are as follows
U0101
U0100
U0073

 

[Mbrooks420]

If you dropped a wheel hard enough to mess up the alignment I bet you splashed a lot more than you think. I’d start with the transmissions main harness. Sitting with a fan blowing underneath to help dry things couldn’t hurt.

 

[Bazz270]

communications DTC issue: probably TCM main connector shorted or bad trans harness insulation (HSCAN or ACC wires shorting to ground somewhere) near passenger rear side of exhaust manifold.

also check your TCM fuse. If blown your TCM harness (part of main harness) shorted for sure.

it is pretty common water cross issues if main harness never replaced in your vehicle.
because of no " back amperage" HS/MS CAN communication wires protection ,keeping going with shorted HSCAN ( no communication related DTCs) wires can cause several NOGO troubles like EEPROM chips (AKA keep alive memory chip) burning or for example PATS cluster module permanent key erased.