no HEAT
Thread Starter
Banned
Joined: Jan 2005
Posts: 2,997
Likes: 0
From: Baltimore, MD
no HEAT
well as the first cold spell is upon me here...i found out tonight with temps in the mid 20's that my heat no longer works in the truck. it was a cold 30 minute drive home, with engine temps right up at 190 where they should be...the air coming from the vents may have been 60 degrees tops...it just isnt hot like it should be. the heat has always been able to make it so hot i cant breathe and now its 
so anyway i checked heater hose for a kink that wasnt allowing flow...looks good. the controls for metering heat seem to work because it will work fine on the cold side but when going to the hot side it just doesnt warm up.
i had some heater core noise like there was air in it...had that noise for nearly 2 months since doing the head, im thinking this air is trapped in there preventing the hot coolant from flowing properly.
any ideas?
so anyway i checked heater hose for a kink that wasnt allowing flow...looks good. the controls for metering heat seem to work because it will work fine on the cold side but when going to the hot side it just doesnt warm up.
i had some heater core noise like there was air in it...had that noise for nearly 2 months since doing the head, im thinking this air is trapped in there preventing the hot coolant from flowing properly.
any ideas?
Banned
Joined: Apr 2005
Posts: 3,337
Likes: 0
From: Place with no quail:(
A TOM without heat? What is the world coming to??
I would check for air in the heater core, not real sure how, but that seems to be the most likely cause. Or maybe the blend door is stuck. Or partially stuck.
I would check for air in the heater core, not real sure how, but that seems to be the most likely cause. Or maybe the blend door is stuck. Or partially stuck.
Registered User
Joined: Apr 2004
Posts: 2,148
Likes: 0
From: New Meadows, Idaho
Here is a few ideas...
Originally Posted by DODGE FSM BOOK
OBSTRUCTED COOLANT FLOW Possible locations
or causes of obstructed coolant flow:
or causes of obstructed coolant flow:
² Faulty water pump.
² Faulty thermostat.
² Pinched or kinked heater hoses.
² Improper heater hose routing.
² Plugged heater hoses or supply and return ports
at the cooling system connections.
² A plugged heater core.
If proper coolant flow through the cooling system is
verified, and heater outlet air temperature is still
low, a mechanical problem may exist.
MECHANICAL PROBLEMS Possible locations or
causes of insufficient heat:
² An obstructed cowl air intake.
² Obstructed heater system outlets.
² A faulty, obstructed or improperly installed
blend door.
² A faulty blower system.
² A faulty a/c heater control.
² Faulty thermostat.
² Pinched or kinked heater hoses.
² Improper heater hose routing.
² Plugged heater hoses or supply and return ports
at the cooling system connections.
² A plugged heater core.
If proper coolant flow through the cooling system is
verified, and heater outlet air temperature is still
low, a mechanical problem may exist.
MECHANICAL PROBLEMS Possible locations or
causes of insufficient heat:
² An obstructed cowl air intake.
² Obstructed heater system outlets.
² A faulty, obstructed or improperly installed
blend door.
² A faulty blower system.
² A faulty a/c heater control.
Or...
Originally Posted by DODGE FSM BOOK
TEMPERATURE CONTROL
If the heater outlet air temperature cannot be
adjusted with the temperature control **** on the
a/c heater control panel, the following could require
service:
adjusted with the temperature control **** on the
a/c heater control panel, the following could require
service:
² A faulty a/c heater control.
² A faulty blend door actuator.
² A faulty, obstructed or improperly installed
blend door.
² An obstructed cowl air intake.
² The engine cooling system.
² A faulty blend door actuator.
² A faulty, obstructed or improperly installed
blend door.
² An obstructed cowl air intake.
² The engine cooling system.
Thread
Thread Starter
Forum
Replies
Last Post
tswcoaltrain
2nd Gen. Dodge Ram - No Drivetrain
7
Nov 12, 2019 09:11 PM