Aloha, recently my girlfriend was driving her 1989 Mazda 323 hatchback when it suddenly "slipped" into neutral, and wouldn't engage any gear. I adjusted the shifter linkage, and I changed the filter and tranny fluid, but still no engagement of any gear, and I was noticing that I can move the shifter lever without engaging the brake pedal. Any correlation? And more importantly, any ideas on what the problem is? Fixable?

Thanks for your time!!

Daniel