Hello, I'm Chris, a current Ford Lincoln Mercury employee.
Thanks for visiting Just Answer. I will do my very best to help you resolve your concerns by asking questions if needed then suppling a answer. Gaining your TRUST in myself and knowledge is my goal. I try my hardest to respond in a timely matter and I will respond to any reply anytime I am online.
Sounds like you have shifter linkage issues internllay in the trans or the 1st gear sychronizer or fork is holding the gear engaged. This means the trans needs to be dropped and disassembled for inspection.