My 2002 Jeep Liberty Sport just got transmission filter-fluid change. Moved to Georgia, now engine light on, battery light on, no A/C, blowing hot air. Should I get diagnostic (yes,. probably) but what things should I expect? My last mechanic did say I need a sensor (O2) but as soon as I could get the part, but wasn't under the impression I needed it yesterday. He said that was where some transmission fluid leaking (condensation) Anyway somebody brief me so I dont spend too much I do not even have.
I appreciate a brief tutorial.