Yes, a catalytic converter can make it run hot if it is plugged.
The 1981 Chevy Malibu 350 engine thermostat is located on the front of the engine. You can follow the water supply hose from the radiator to the thermostat.
follow top radiator to end of hose, the thermostat is in the housing at end...
Most stats are located in the thermostat housing at the bottom of the upper radiator hose.
the thermostat will be under the THERMOSTAT HOUSING, which is where the TOP radiator hose fits on ie(radiator to thermostat housing) this keeps the engine at an OPTIMUM temperature BUT can be A cause of OVERHEATING IF malfunctioning
The thermostat on a 2009 Chevy Malibu with a 3.5L engine is located where the lower radiator hose connects to the engine. Labor manual states 1.0 hrs. Drain radiator. Remove plastic intake hose. Remove upper radiator hose. Remove lower radiator hose. Remove 2 10mm bolts from thermostat housing. Replace faulty thermostat. Reverse procedure for reinstall.
Drain the radiator. The thermostat is in a housing connected to the water pump. Remove the housing to replace the thermostat and gasket.
just follow the upper radiator hose to engine, and you will find it.
Drain the radiator. Remove the upper radiator hose at the engine. Remove the bolts holding the thermostat housing. Remove the housing and the thermostat. Clean both surfaces and install the thermostat and gasket. Install the housing,bolts,the hose and refill the radiator.
The thermostat on a 1999 Chevy Malibu 2.4L is located on top of the engine, in the intake manifold. It is within its own housing which is connected to the upper radiator hose.
Drain the radiator into a suitable container. At the end of the upper radiator hose on the engine is the thermostat housing. Remove the 2 bolts and remove the housing. Remove the thermostat and clean both surfaces. Install the new thermostat and the housing. Service the radiator as needed.
Drain enough of the radiator to remove the top radiator hose. Remove the hose, then the pipe that the hose connects to. The bottom end of the pipe houses the thermostat.
Almost all thermostats are located where the top radiator hose attaches to the engine.