Low coolant, weak thermostat, plugged heater core/ and or( if it has) defective heater control switch.If system is low on coolant, fill to top and try it; but keep an eye out for a coolant leak. Take you hand and place it on the two heater hoses going through the firewall. They should both be hot to the touch when the engine is hot.If only one is hot, then you could have a plugged heater core. If engine temp gauge shows that the engine does not warm up, replace the thermostat. I hope this helps you.
Answer The most common heater failure on the F150 is operation of the blend door. Check www.heatertreater.net for diagnostic information and an inexpensive fix.
The most common cause of this failure is a broken blend door. Check heatertreater.net for diagnostic information and an inexpensive fix.
There are several common heater problems for a 1997 f150. A stopped up or leaking heater core, bad thermostat or clogged up blower fan housing all can cause heat problems.
some possibilities are. low coolant level, open thermostat, pluged heater core,
Burried behind the dash on the passenger side, good luck.
engine light comes on and off. when light is on it hesitates and transmission slips. what could cause that on a 93 F150
How do I replace the block heater in my 1998 F150 4.6L?
I don't know about the outside diameter of the hoses but, the outside diameter of the heater core inlet and outlet tubes are 3/4" (inlet) and 5/8" (outlet).
The heater flap, or blend door, is difficult to replace with OEM parts supplied from Ford. There is an aftermarket kit that makes the job and cost significantly easier at heatertreater.net or on the Ebay listing.
The head gasket is about to blow.....Typical ford..
Is the 1997 F150 Transmission is the same as the 1999 Expedition
The thermostat may be stuck open.
heater core hoses not hot
How do I locate the heater blend door actuator in a Ford f150 pickup
No, 97-03 F150's have a 5x135 lug pattern.
To remove the fan shroud from the 1999 Ford F150 you need a user manual to guide you.
check your battery cables. could be old or just loose.
The temperature blend door may not be hooked up or is not working. Check that the temperature can be changed in any mode of operation. It could be a disconnected or failed actuator also.
You have done something to the mix door. It should shut off air to the heater core when the AC is on. It is located right near the core and you may have bent it or just disconnected it by mistake.
Go to hospital take he/she to the hosipitstal
The speed sensor is mounted in the top of the rear differential on a 1999 F150. Remove the wires, then unbolt the sensor to remove it.
Removing the spare tire from a 1999 Ford F150 is simple. All you have to do is get under the truck and unbolt the spare tire.
Low coolant? Defective thermostat? Heat control cable not adjusted properly? Heater core plugged or airbound?
i seriously doubt it. there have been several engine modifications to the the Triton v8s since 1999.