If the ABS light is on intermittently, it may be due to a loose ABS ring on the rear axle. If a loose ABS ring is found during inspection, replacement of the ABS ring and affected drive axle may be necessary.
Mazda RX-7 Problem Reports
Newest Mazda RX-7 Problem Reports
If the engine intermittently does not start and is cranking OK, it may be the main relay is defective. The main relay can corrode and fail, requiring replacement.
If the engine surges and hesitates, our technicians recommend checking the condition of the ground on top of the engine block, under the intake. Restore the grounding point if it is found to be corroded or compromised.