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Why would a 99 Jeep Limited heater lines get hot but it only blows cold air?
Wiki User
∙ 19y ago
If (BOTH) hoses are hot U might have a mixer door problem-A bad Actuator will do it,OR U could just have a small Vacume hose off - under the dash on the passenger side OR under the hood - Check from the Intake manifold 2 the fireeall on the passenger side.
Wiki User
∙ 19y ago
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1989 corvette heater blows cold air even though both lines are hot going to the firewall do you have to change the heater core and if so how do you do it?
I would say that your heater core is ok...it sounds like you have a bled door promlem in the dash.
Why would your heat only work on defrost?
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
Why would a 2000 Saturn heater only blowing warm air?
it is a heater. heat. it blows heat. warm air
Why would a jeep wagoneer limited have hot heater lines and only blow cold air?
The thermostat could be stuck closed. the heater core could also be plugged or the door closes when you use ac and opens when you use the heater may not operate.
Why would you smell antifreeze through your defrost?
Blown Heater Core - The heater fan blows past the heater core and if it has a hole in it your antifreeze ios being blown onto your windshield.
What would cause a humming sound when car heater is turned on high?
The motor which blows air through the vents.
Why would an engine run cold temp gauge says cold and the heater blows slightly warm air?
change t.stat
Which fuse would be bad if the heater blows out cold air?
No fuse for those symptoms. Could be low on coolant. Bad thermostat. Plugged heater core (my guess). Temp blend door problems.
The rear heater in your 99 Astro van blows only cold air the front heater works fine any ideas as to what might be the problem?
The line or core is probably plugged, or if it has a manual or vaccum switch check to see that it is not corroded. If it moves freely, I would find both lines to the core (heater), disconnect them and drain as best you can. I would pour some flush into the lines and let it sit in the lines/core for 15 minutes then attach a garden hose and flush the crap out. I usually install some cheap clear plastic tubing on the core/lines to let gravity help me and to direct the waste away. Remember to top off the rad.It will heat good then. I hope this helps you. Mark
Why does heater blow cold at idle only blows hot air when accelerating temperature gauge shows normal Chevrolet Impala 2008?
If the coolant level is okay, I would suspect a restricted heater core. Try flushing the heater core.
Why would a car heater blow cold air but when it's moving it blows hot air?
check heater core could be cloggedCheck the engine coolant level also.*no, the heater relies on the engine for heat and when you drive the engine warms generating heat:)*
1998 transport over heating. when the temp gauge is normal heater is blowing hot when temp gauge gets hot heater blows cool replaced thermostate Why would it be over heating?
This would indicate that the system is low on coolant when the gauge is hot. Not enough coolant to service the heater core.
