Could use more info about the vehicle but a good place to start would be to replace the thermostat.
your car might be weak on accelerating because it isn't firing on all cylinders.
Lebron JamesORMiami Heat
yes it is
The heater in your car uses waste heat from the engine to heat the car. When the engine is not running there is no heat to distribute.
Weak battery
It shields the rest of the car from the heat of the exhaust or radiator .
Weak battery and no gas can both cause a no start.Weak battery and no gas can both cause a no start.
A car engine is a heat engine, but there are various types of heat engines outside the realm of car and truck engines.
a weak battery, weak alternator , just a low idel speed or bad ground
for one weak 7 days
Probably not for long. If the engine is deprived of oil, it will seize up and stop running. What kind of car is it and how do you know it has a weak oil pump?
Car not blowing air or heat