0
I disconnect both heater hose off of the engine, then fabricate a fitting that will attach a garden hose to one of the heater hoses. While directing the other hose towards a bucket, I gently turn on the water supply to wide open and let the water run until it shows clear, then reverse the flow into the heater by switching hoses and repeat.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why would hot steam blow from the heater vents?
Leak in heater core. Replace core.
How will the heater react if the heater core is stopped up?
Your heater will blow cold air only.
Heater does not blow hot all relays are good?
Check the thermostat or heater core
What might cause a heater to blow cold air in a 1992 Wrangler?
heater core could be rusty and old or line to heater core could be plogged most likely old heater core
Why does the heater blow heat while driving and cold at idle?
you need to replace your heater core
Why does my 2004 Monte Carlo heater blow cold air?
Low coolant? Bad thermostat? Heater control cable not adjusted properly? Heater core airbound? Heater core plugged?
Why won't my heater blow on my 1993 Buick Roadmaster?
flush the heater core in both directions with water
Why would you smell antifreeze and heater blow cold air?
heater core possibly plugged and leaking
1998 Oldsmobile cutlass heater will not blow hot air?
May be a defective thermostat or heater core
Why does the heater on a 1986 Chrysler Lebaron only blow out cold air?
Low coolant? Thermostat not opening? Control cable not working? Plugged heater core? Heater core "airbound"? Low coolant? Thermostat not opening? Control cable not working? Plugged heater core? Heater core "airbound"?
2003 Jeep wrangle will not blow heat?
Heater core may be defective
Why would heater only blow hot air when you turn the temp switch down Replaced temp switch and still does it?
A restricted/plugged heater core can do that. Try flushing the heater core.
