Temperature sensor, MX-5 1.6 mk1, ECU. Temperature sensor from rear of engine, MX-5 1.6 mk1 1989-1998. If this is playing up it will usually trigger an ECU fault code '09'. This is over £30.00 from Mazda.
MX5 Engine Coolant Rear Temperature Sensor Genuine Mazda MX-5 Mk1 1989-1998
MX5 Engine Front Temperature Sensor Radiator Fan Switch Mazda MX-5 Mk1 1.6 89>94
MX5 Engine Coolant Temperature Sensor ECU Mazda MX-5 1.6 & 1.8 Mk2 2.5 1998>2005
Coolant Temperature Sensor fits MAZDA MX5 Mk2 1.6 98 to 05 Sender Transmitter
Temperature sensor for Mazda MX-5 1.6 mk1 fan switch MX5 from front of engine
MX5 Engine ECU Coolant Temperature Sensor Rear Mazda MX-5 Mk1 NA 1.6 1989>1998
