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.
Resources for the Repair and Maintenance of your 1990 Mazda RX-7
1990 Mazda RX-7
1990 Mazda RX-7 Problems
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.
An oil leak can develop at the rear stationary gear seal and O-ring, at the rear of the engine. Our technicians report that transmission removal is required to gain access to the components.
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.
1990 Mazda RX-7 Recalls (Recent)
Summary: THREADED INFLATOR COMPONENTS MAY HAVE BEEN DAMAGED DURING ASSEMBLY WHICH MAY ALLOW COMPONENTS TO SEPARATE WHEN INFLATOR RECEIVES A SIGNAL TO DEPLOY THE AIR BAG.Learn more »
1990 Mazda RX-7 Questions and Answers
How often should the oil be changed?
few seconds and shuts off.previous said thats what it was but my mechnic says that model year didn`t have one any ideas. mh
1990 Mazda RX-7 Reviews
This is a very unique vehicle. The rotory engine operates better at higher rpm than a conventional piston engine. Another highlight is the rear wheel drive that it has as rear wheel drive is getting harder and harder to find. Comfort was second to speed and looks in design. Also not the best car to transporting ppl or groceries. If you want a sports car, this is the car for you.
The Mazda Rx-7 is a great car. This car is not for beginners but more for intermediate drivers. The 1.3L rotary engine is a one of a kind engine that requires well checked maintenance. Since it is oil injected, checking on oil is a necessity. The great things about this car is the chassis and steering(if equipped with turbo it has very minimal turbo lag), the lows are the fuel consumption and mediocre interior. Overall this car is great for the enthusiast, and its decent as a DD if non turbo.