Why does my Mazda RX-7 keep overheating?
The most common cause of constant overheating is the thermostat. While Mazda thermostats are very reliable, like everything it will eventually wear out. The thermostat then becomes stuck or sticky. This results in less (or no) coolant flow through the radiator.
What’s the normal operating temperature of an RX-7?
For the purposes of this document, normal operating temperature is defined as 1/4 on the stock temp gauge for ’86-’88 car, and 1/2 on the stock gauge for ’89+ cars. Note that the stock ’89+ gauge is truly terrible and has basically three positions: cold, normal, and “new engine”.
What kind of cooling system does the RX-7 have?
There is nothing particularly special about the RX-7 cooling system, except the fact that there are actually two in the car. The first system is the one we are concerned with. This is the water system. Like any other car, it contains 4 key components; the thermostat, the radiator, the water pump and the fan.
What causes a Mazda RX 8 fan to stop working?
Fan – A bad fan clutch can cause the fan to stop working. The clutch can wear out over time, and if it leaks, freely spins, wiggles or wobbles when the fan is pushed in or out, or has no resistance, you should replace it. Make sure that on an electrical fan that it cycles on and off when the engine heats up or cools down.
The most common cause of constant overheating is the thermostat. While Mazda thermostats are very reliable, like everything it will eventually wear out. The thermostat then becomes stuck or sticky. This results in less (or no) coolant flow through the radiator.
Can a 3rd Generation Rx 7 overheat?
While it comes as no surprise to most of us, the 3rd generation RX-7 has been known to overheat easily when driven aggressively on the street or track.
For the purposes of this document, normal operating temperature is defined as 1/4 on the stock temp gauge for ’86-’88 car, and 1/2 on the stock gauge for ’89+ cars. Note that the stock ’89+ gauge is truly terrible and has basically three positions: cold, normal, and “new engine”.
Why is the cooling tank on my RX7 not working?
The plastic tank that the RX7 is originally equipped with has proven to be inadequate again and again. The extreme underhood temperatures combined with the pressures of the cooling system can cause the tank to fail without warning and drain the pressurized cooling system in virtually seconds.
There is nothing particularly special about the RX-7 cooling system, except the fact that there are actually two in the car. The first system is the one we are concerned with. This is the water system. Like any other car, it contains 4 key components; the thermostat, the radiator, the water pump and the fan.
Why is the thermostat closed when the engine is not running?
The thermostat is closed when the engine is cold and not running. Regulation of water by the thermostat prevents engine hot spots. Once the optimal temperature has been reached the coolant water will be let into the radiator for energy dissipation. If too much of the coolant goes to the radiator the engine is overcooled.
What causes a car to overheat with a new thermostat?
A leaky head gasket or a cracked cylinder head are normally due to expansion and contraction of engine materials along with high pressures caused by excessive overheating. The Integrity of the system cooling system is compromised if there is a leaky head gasket or cracked cylinder head.
Why is my car heater not getting coolant?
A car that is not getting coolant will heat up and damage itself permanently. If it leaks water, you need to find the source. It can be a split hose, leaky radiator, the water pump, or even worse, the head gasket.
How do you remove the thermostat on a Mazda?
First, detach the water hose, then the lower radiator hose. Next, remove the thermostat. Finally, remove the thermostat gasket. You may need a nail brush or piece of wood to scrape it off. Do not use a metal object to remove the gasket; it can damage the surface and prevent a good seal.
Why does the thermostat on my Mazda stick open?
However, rust or contaminants can cause the thermostat to stick open or closed. When this happens, the engine either runs cold or overheats. Learning how to troubleshoot and repair your Mazda thermostat can prevent major damage to your motor and save you money.
How do you know if your thermostat is faulty?
There are three main ways of discovering a faulty thermostat: error codes from the check engine light, your temperature gauge, and feeling the radiator hoses. If the thermostat is stuck open, your car will not run efficiently.
What does po126 mean on Mazda thermostat?
PO126 – This code indicates that either the coolant temperature sensor or the thermostat needs to be replaced. Most of the time, the thermostat is malfunctioning. PO128 – This code indicates that the engine is not reaching the correct operating temperature within a set time after startup.