|
|
jakew7
New User
Feb 13, 2012, 7:40 PM
Post #1 of 2
(2264 views)
|
|
f150 heater core problem
|
Sign In
|
|
1998 F150 V6 heater is not working. I have put in a new thermostat and updated fluids and still will not work. I removed both hoses going to the heater core from the motor and blew air through the hose. Air was able to circulate all the way through, so I added "CLR" in the hoses and let it sit for 45 minutes. I added fluid back and replaced everything. Now the top radiator hose is getting warm and the temperature hand is reading normal, but neither heater core hose is warm and heat still doesn't work. Anybody have any suggestions?
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Feb 13, 2012, 7:57 PM
Post #2 of 2
(2254 views)
|
|
Re: f150 heater core problem
|
Sign In
|
|
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If not too hot to hold, then you have to look at the actual engine temp and if that is up, if it is, then your looking at a restricted heater core.
If you find that they are both too hot to hold, then the heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
If they are both not too hot to hold on to, then you either have a restricted heater core or the system is not completely full and getting air pockets for some reason.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
| | |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 