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 Tried to adjust idle speed. When jumpering terminal 10 to ground terminal in diagnostics block the engine shut down. What would cause this? Is this the proper procedure?
Answer Be sure the AC is off as well as other electrical items. Be sure your in GND & TEN.
You may have to set the idle stop higher than normal to maintain some level. Be sure to set the timing first then idle down then cross check the timing once you establish the appropriate idle.
It's a good practice to clean the throttle plate and the ICS ports since gum/varnish can collect and cause operational issues. All part of fine tuning.
