2001 Other Suzuki Models maruti 800 dx 5 speed gets overheat

Check Engine Thermostat - An engine thermostat is designed to regulate the flow of coolant from the engine to the radiator. This temperature sensitive valve is designed to open when the engine has reached operating temperature (190°-198° F). The operating temperature of 190°-210° F is used to help facilitate fuel combustion. When a thermostat fails it will either stop the coolant flow "stick closed" and overheat or fail to stop the coolant flow causing the engine to run colder longer than necessary. If the thermostat fails to "close" it will cause the coolant to continuously flow through the engine creating a diagnostic trouble code (check engine light) to be set. When a thermostat sticks closed it will cause the engine to overheat quickly, usually within 5 to 15 minutes of operation.

There is a hose pipe running from the top of the radiator to the engine. Normally in a maruti the valve is situated at the point where the hose pipe is connected to the engine but i'm not too sure about the 5speed Maruti 800.