Your 1983 Subaru GL loses oil pressure when the accelerator is not engaged Also when idling the engine comes close to overheating What might the problem be?

The issue with your 1983 Subaru GL losing oil pressure when the accelerator is not engaged and nearing overheating at idle could be due to a failing oil pump, which may not be providing adequate pressure at lower RPMs. Additionally, a clogged oil filter or low oil levels might contribute to poor oil circulation. The overheating could indicate a malfunctioning thermostat, a blocked radiator, or a failing water pump, which impairs coolant flow. It's advisable to check both the oil system and cooling system components for proper function.