AboutMp2 Expertise I prefer to answer questions relating to the Miata since this has been my area of specific
expertise since 1991. I can answer questions relating to the other Mazda models however
some limitation of expertise may reduce my accuracy.
Experience Mazda technician since 1987, shop owner and specialty are regarding the Miata since 1991 covering mechanical, electrical, trim and body. Specializing specifically in drivability concerns.GKHS 1985, BVC 1987, MNA 1989, ASE Master Technician Mechanical 1995, ASE Master Body/Paint/Collision 1996
Education/Credentials GKHS 1985, BVC 1987, MNA 1989, ASE Master Technician Mechanical 1995, ASE Master Body/Paint/Collision 1996
Question 1991 Mazda Miata will start and run fine as long as the car is driven down the road, but stalls and won't idle when at a stop. The fuel system has been flushed and the throttle body, idle air control valve, and tps have been replaced. It has new plugs and wires. The MAF has been replaced with another just to see it if that was the problem and still no luck. Any suggestions?
Answer Get a vacuum reading. (have someone maintain 1000 RPM while you check these two)
Check your timing.
Check all air connection points between the throttle body and the MAS.
TPS units seldom fail.
Have you ever had water on the floor board passenger side?
