If the engine runs poorly or stalls while being driven in the reverse, the intake tube between the mass airflow sensor and throttle body may be split. The damaged intake ducting will need to be replaced.
Car Problem Reports
Mazda MX-6 Runs Poorly or Stalls in Reverse
Mazda MX-6 Problem
Engine Affected: 2.2L 4 Cylinder
Average Mileage: 189,443 mi (170,000 mi - 208,887 mi)
Visitor, 1991 Mazda MX-6, 2.2L 4 Cylinder, 208,887 mi
same issue still
Had to replace my intake tube also.