The unit under the glove box is bad and defaults to the heat position. It needs to be replaced. It can be hardwired to the cool position.
To replace the air filter on a Porsche 944, first locate the air filter housing, which is typically on the driver's side of the engine bay. Remove the screws or clips securing the housing cover and take off the cover. Remove the old air filter, clean the housing if necessary, and then insert the new filter, ensuring it fits snugly. Finally, reattach the housing cover and secure it with the screws or clips.
The Air Conditioner is on
The heater bypass valve is not fully closing, or leaking hot coolant into the heat exchanger.
If the ambient (air) temperature rises and the A/C blows warm air, it probably means that you need to add freon.
spark plugs and wires, oil and oil filter, air filter, check rotor and points in distributor, check belts, just basic maintenance.
A fan on the engine blows air through hoses and into the heater box that is wrapped around the exhaust headers. The heated air from the exhaust headers in the heater box is then blown into the cabin.
For a 1984 Porsche 944, a suitable supercharger option is the Eaton M62, which provides a good balance of power and reliability. In addition to the supercharger, you would need a custom intake manifold, appropriate fuel injectors, and a modified engine management system to handle the increased air and fuel requirements. Additionally, consider upgrading the cooling system and exhaust to accommodate the added power and ensure optimal performance.
WaY ToO expensive!, sell your NA 944 and buy a 944 turbo. Unless you find a COMPLETE 944 turbo engine with the mounts, turbo, the complete long block, the computer with electric harness and all sensors, air filter and intake system, fuel distribution system... for some reason, the clutch housing is different too. You will even preferably have to convert your whole front end to the turbo style to provide a proper airflow to your intercooler, also to note, the turbo exhaust system is completely different (wastegate, catalytic converter side pipe, bigger muffler...). The 944 turbo have bigger brakes and there is a heat guard for the master cylinder
To fix the heater in a Porsche 944 that's not blowing hot air, first check the coolant level, as low coolant can affect heating. Ensure the heater control valve is functioning properly; if it's stuck closed, it won't allow hot coolant to flow into the heater core. Inspect the heater core for clogs or leaks, and examine the blower motor to make sure it's working. If these components are functional but you're still not getting heat, consider checking the thermostat and the climate control settings.
it blows air
ruud furnace only blows cold air, no heat
a/c blows warm air when idles cold when running