What should the coolant level be on a Miata?
Make sure your coolant level is correct With the engine cold, fill the overflow reservoir to the “Full” line with your coolant mix. Do not fill it while the engine is hot. This will cause extremely cold mixture to be sucked back into the radiator as the engine cools, possibly causing thermal shock.
Can a racing radiator be installed in a Miata?
Consider an oversized radiator If all else fails, especially if you have forced air induction, you should consider an oversized radiator. Aftermarket racing units are available. Another option is to install the radiator from an automatic Miata into your 5-speed.
Where is the cooling fan located on a Miata?
The base Miata has one fan, mounted on the left (looking forward) side of the radiator, called the Radiator Cooling Fan. The Radiator Cooling Fan motor should use 5.3 – 6.5 Amps.
Why does my Miata heater freeze in winter?
Thermostat’s, over time, have a tendency to freeze up. They may freeze in the open position, which will result in slower engine warm-up and, in winter, lack of heater output. Or they may freeze in the closed position, causing your engine to overheat. We recommend replacementevery few years – they’re cheap. Note from Magnus Bo Bojesen:
Where does the coolant flow from on a Miata?
To check, remove the rubber bypass hose from the the thermostat housing to the water pump inlet. It runs almost vertically from the housing to the inlet. Coolant should flow freely from the barb on the water pump inlet once the hose is removed.
If all else fails, especially if you have forced air induction, you should consider an oversized radiator. Aftermarket racing units are available. Another option is to install the radiator from an automatic Miata into your 5-speed. The radiator on the automatics has a bit more cooling capacity.
What causes a Miata engine to overheat in winter?
Thermostat’s, over time, have a tendency to freeze up. They may freeze in the open position, which will result in slower engine warm-up and, in winter, lack of heater output. Or they may freeze in the closed position, causing your engine to overheat.
Is the water thermosensor on a 1990 Miata?
The 1990 FWM is written as though the Water Thermosensor is the temperature gauge sensor, which it is not. There is no data on the actual gauge sensor, although the manual spec on the gauge itself states that the gauge should point to ÒHÓ for a resistance to chassis ground of 20 ohms (18 ohms for Canadian cars). Coolant Flow