Why is my mazda mpv 2000 overheating?
While there are a variety of reasons your Mazda MPV is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.)
What to do if your radiator cooling fan Wont Stop Running?
Remove the lid. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.
What happens when coolant comes out of the radiator?
Wherever there is a leak in your radiator you will now have coolant + liquid egg whites flowing through the leak. Once the engine gets to temperature, all the egg whites curdle, including the portion that is in the middle of leaking out of the radiator. Whites turn from a liquid to a solid and the hole is plugged.
Is there a water flow through the radiator?
This will sound crazy, but neither radiator fan works. HOWEVER, as there is no flow through the radiator (lower radiator hose and bottom driver’s quarter of the radiator are COLD), my first concern is getting flow through the radiator and then I’ll worry about the radiator fans.
Can a radiator transfer heat to the engine?
The flow tests is not very helpful. A radiator can flow great but not transfer heat if it is fouled with coolant scale deposits. From your description I would repair fans first, replace the radiator, put it all back together. Test after repairs by timing the fan run time.
Remove the lid. Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.
Wherever there is a leak in your radiator you will now have coolant + liquid egg whites flowing through the leak. Once the engine gets to temperature, all the egg whites curdle, including the portion that is in the middle of leaking out of the radiator. Whites turn from a liquid to a solid and the hole is plugged.
This will sound crazy, but neither radiator fan works. HOWEVER, as there is no flow through the radiator (lower radiator hose and bottom driver’s quarter of the radiator are COLD), my first concern is getting flow through the radiator and then I’ll worry about the radiator fans.
The flow tests is not very helpful. A radiator can flow great but not transfer heat if it is fouled with coolant scale deposits. From your description I would repair fans first, replace the radiator, put it all back together. Test after repairs by timing the fan run time.