1996 Ford E-150 Q&A
1996 Ford E-150 Question: low heat
flush heater core take heater hose off at engine get couplen to go in heater hose then take water flush one hose then the other till water runs clear ,you may have to change therostat use 195deg - delane 72 garage and body shop
If the heater engine is at proper operating temperature, however, you could have an issue in the dash with the part that changes hot air to cold. - DaveJHM
Rear unit has a vacuum operated valve in the heater hose to rear unit. Outside or inside air works fine on front unit.
Does not have A/C.