check both heater hoses under the hood with engine at running temp. if only one hose is hot your heater core is restricted( try flushing it out),m low coolant will also cause no heat since the heat comes from the hot coolkant in the heater core. if both hoaes are hot chances are the blend air door in the interior heat unit is faulty or climate control is not calling for heat.
Your thermostat is shot! they're only about $10. and easy to replace but don't install it upside down.
Poor coolant circulation from a plugged up heater core. Try flushing the heater core and replacing the thermostat.
They get old and become weak.
IF a Vaccume hose comes off OR is bad going 2 the DASH Controls that will happen OR a bad Actuator or Actuator door (stuck) will cause that.Make sure the vaccume Canister is not cracked (if it hs one) Usally it's a very small Vaccume line(hose) that causes the Problem. You either have a vacuum leak in the heater control system, or a cable that has come off of its control panel...
There is a sort somewhere in the starting system
Excess fuel causes black smoke.
Engine coolant leaking into cylinder. Possible bad head gasket.
The most likely cause would be a vacuum leak at the rear of the engine or a defective selector switch.
Either the a/c system is low on freon or the evaporator has an internal restriction....
Check the cabin filter if applicable.
Any of the following can cause this......... 1. Bad a/c - heater controller.. 2. Bad a/c - heater controller inside door operation.. 3. Bad, broken or cracked vacuum line/lines..
The flap that directs sir to the selected vents is jammed or broken...or the switch that controls it is.
Check all of your vacuum lines from the ac control panel and under your hood. You have lost vacuum somewhere witch controls your vents. There is one of them loose, disconnected or broken. Should be easy to trace. Good Luck!!
vacuum leak the vacuum reservoir is below the left head light, check the hoses
A plugged cabin air filter could cause poor air circulation coming out of the ac vents but you would still hear the blower motor running.
The Gaseous buildup inside of the internal combustion chamber would cause engine failure, the engine to blow, and explode litterally
Leak in heater core. Replace core.
heater on at idle and will not blow warm air. when moving it blows the warm air from the vents. what will cause this
Yes it can cause bulbs to blow.