jimbalaya
Member
- Joined
- May 14, 2013
- Messages
- 48
- Reaction score
- 1
- City, State
- Santa Monica, CA
- Year, Model & Trim Level
- 1997 Exp.XLT 2wd 4.0 SOHC
I am trying to diagnose why my heater has worked sporadically since i replaced the radiator a few months ago. I have done a lot of reading from previous threads on this site and am wondering if no water flowing in/out of the two heater core hoses means definitely that the HCV is stuck closed or that heater core is clogged. It seems oddly coincidental that this began right after radiator replacement.
here is what I have confirmed so far about heating system:
let me know what you guys think - thanks in advance.
here is what I have confirmed so far about heating system:
- temp gauge reaches normal operating temp after a few minutes of driving and stays pegged just below the halfway mark;
- top radiator hose does not have flow and become hot and firm until after the engine reaches normal operating temp [which should mean that thermostat is working correctly];
- both heater core hoses do not get hot with heater control on and engine at normal operating temp; nor do i feel any flow as i can pinch closed with fingers;
- blend door appears to be working correctly
let me know what you guys think - thanks in advance.