My heat blows cold air. I flushed the radiator, back flushed the entire coolant system 3 times, changed the thermostat, changed the blend door motor and replaced the water pump. The top radiator hose gets hot and real tight while the bottom hose barley gets warm. Any idea whats wrong
The temp difference of the rad hoses is normal. Are both heater core hoses getting hot with the heater on and the engine warm?
February, 20, 2013 AT 3:44 AM
Yes they are but still blowing cold air. Why is the top hose swelling
February, 20, 2013 AT 3:56 AM
It is normal for the cooling system to build pressure. Make sure the pressure release is working on the radiator cap and the hose is still good. As far as the heat, if both hoses are hot, you still have a problem with the blend air door.
February, 20, 2013 AT 4:07 AM
Ok ill check both thanks for your expertise
February, 20, 2013 AT 4:47 AM
I RECKON THAT RULES OUT AIR IN THE SYSTEM, IF BOTH HEATER HOSES ARE HOT AS THEY ENTER THE FIREWALL
SEE IF YOU SEE SOMETHING THAT COULD BE WRONG---AS THEY TAKE 'EM APART AND 'SPLAIN STUFF
IT'S GOTTA BE A DOOR STUCK--BROKE--NOT MOVING / ACTUATOR/ LINKAGE/ CONTROL/---NO POWER/ NO VACUUM ISSUE
YOU MIGHT EVEN CHANGE/ SWAP AROUND MY SEARCH WORDS AND GET OTHER/ BETTER YOU TUBE RESULTS
REGARDLESS---KEEP US POSTED---WE CAN TRY TO GET MORE INFO FOR YOU
YOU KNOW---JEEP CJs DON'T HAVE ALL OF THESE MODERN PROBLEMS--HEATER STUFF IS CABLE CONTROLLED.........MINES GOING ON 36 YEARS YOUNG, STILL WORKS FINE!
EVER THOUGHT ABOUT HAVING A "REAL VEHICLE" TO CRUISE IN?.........SEE THE LAST PART OF THIS ANSWER