Issue:
After traveling approximately 4 hours, tranny felt like it "slipped" into neutral.
Pulled over, put into park, shut down engine, and waited five minutes. Started engine, put into drive and pulled away. Drove another 350 miles with no problem.
Next morning, drive approximately 45 miles, downhill on I-77 from Va into NC, and same thing happens.
Towed to Piedmont Ford in Greensboro, NC.
Solution:
Scanner immediately gave two codes, pointing to solenoid A. After two days of testing at Piedmont Ford, they replaced the solenoid. Continued on to Orlando, and back to NY with no further problems.
2003 Ford Chassis, 4R100 tranny.
The folks at Piedmont Ford did an outstanding job, getting me in right away and diagnosing the issue. They also looked for other potential causes to rule out.
All covered under warranty, as they occured at 10,265 miles.
Good Sam tow was there in 25 minutes. Awesome job.