Air Pump
WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
- Start engine and run at idle. Ensure magnetic clutch is engaged. Disconnect air pump outlet hose and install a pressure gauge. Pressure gauge should show at least .7 psi (.05 kg/cm2 ) coming from air pump. If pressure is less than specified, replace air pump.
- Increase engine speed to 3250 RPM and verify air pump magnetic clutch disengages. If air pump magnetic clutch does not disengage, disconnect electrical connector from air pump. Air pump magnetic clutch should disengage.
- If air pump is still engaged, replace air pump. If air pump magnetic clutch disengaged when electrical connector was disconnected, check air pump relay (located in front engine compartment relay box).