No Heat
#1
#3
D2 always has hot coolant circulating in heater core. No on/off valve. So if no heat, very likely low coolant. Heater core could be blocked, hard to replace (truck is built around it). Thermostat could be stuck open. If WP was bad, would also suspect overheating. Could remove hose to heater core and reverse flush with garden hose. Here is plumbing chart.
#6
#7
Might not be coolant. Floor boards can be wet becuase of plugged drain(s) for the AC. There is one on each side of tranny hump, looks like a plastic nipple from underside, and both need to be clear. With AC on and draining, should have two water spots under truck.
IMHO with coolant on floorboards I would bypass heater core under the hood, and see if problem fixed, before tearing into dash. Here's the plumbing diagram.
IMHO with coolant on floorboards I would bypass heater core under the hood, and see if problem fixed, before tearing into dash. Here's the plumbing diagram.
#9
#10
That would be the famous waterfall sound which means that there is air in you cooling system. Search how to bleed cooling system and give it a try. Air in system will cause truck to overheat and then a snowball of problems if the snowball is not what caused the air to be in there.