Hi, all this is my first time here. I have a problem with my 1990 Acura Integra GS 4-door automatic. I would start her up and the car runs fine but when I either rev the engine or shift into gear like Reverse or Drive the RPM needle would drop all the way down to zero. Could someone give me some suggestion to how to fix my car?

 

Fix the problem... It was low coolant so just fill up with water and it drives now.