2002 Ford F-150 Q&A
2002 Ford F-150 Question: Little or no heat, have flushed system, replaced thermostat.
when you turn the knob,or move the lever to change from hot to cold or vice versa,do you here any noise from under the dash? this truck has blend doors which control the temp of air that you get.they are controlled by small electric motors called actuators. in is very common for those to fail on your particuliar year and make. - jethro29
Check heater control valve for proper operation. That black thing in the heater hose near firewall with the vacuum hose hooked to it. - pushrod
agree with both posts 1 and 2 - globalhelper
yes I did aii these things and stii no heat - king dog