#1 a thermostat must be in the system for the coolant to get hot enough to heat the vehicle. #2 check to see if the coolant is flowing through the core by feeling to see if the 2 hoses are hot, if not look for a valve inline on one of the hoses it is rusted shut. If they are both hot then the air mix door in the heater is stuck on vent or a/c and wont let the heat through the door can be opened manually by moving the lever on the heater under the dash
because your ovberflow or condenture tube is clogged remove it and just blow it out with air
Vent bypasses heater core when open,it is for outside air only...I know this because I just replaced heater core.
It mite not be a fuse have you checked the vacume hoses that come from intake manifold this can cause the fan not to blow.
Well if its clogged then i say you need to get it fixed!, it could blow!!! It could blow because of the pressure build up in side
I have a 99 wrangler and have had problems with the wires shorting out or corroding under the box. I had to remove the box and replace some wires, the fuses in the box did not blow.
Remove it and blow through to see if it is clogged. Rather than seeing if it is clogged just replace it to make sure.
most common is a clogged evap drain hose find hose in engine compartment right side lower firewall and blow compressed air into hose. leaves and mulch are the cause
Most likely reason is that it is rusted out. Improper coolant to water ratio can help freeze plugs rust from the inside, and wet weather will help it along on the outside.
Clogged cabin filter
It could be a clogged PVC valve.
oil in intercoolereither turbo seals leaking or excessive blow from engine via tappet cover breather or clogged air filter or under capacity air filter could be some of the causes kulvir66.comIndia
Take it off and try to blow through it. If you can't blow through it, it is clogged. Now, since you have it off....replace it. Fuel filters should be changed like oil filters, especially with the quality of today's gas.
The front expansion valve is clogged.
I doubt the hose if clogged, but if it is, simply disconnect it and blow through it until it is clear. More than likely the spray nozzle at the end is clogged with car wax. Clean it out with a small pin or needle.
If it has the notoriously bad Carter BBD carb, you can remove the venturi's and drill them out as they have a tendency to plug up. A webiste that has the blow by blow info on how to perform this is http://rubicon.off-road.com/jeep/tech/engine/carter.html. It is rather easy to do and will help to keep the venturi's from pluggin ing hte future.
Dead short in either wiring or wiper motor Disconnect wiring harness to motor and install fuse--if it continue to "blow" problem in wiring to motor -- if it doesn't problem in motor
it should exit somewhere thru the firewall into the engine bay. pull it back into the cabin, and blow out the water. it should exit somewhere thru the firewall into the engine bay. pull it back into the cabin, and blow out the water.
Heater core may be defective
if it doesn't heat your heater core is most likely clogged and if it doesn't blow at all then the blower is messed up.
probally closed or clogged
Probably leaking freon.
heater core possibly plugged and leaking
hi i like nomey
Check freon level first
Most likey a bad ground. I would suggest a chaffed hot wire to the tail lights. The bare wire at the chaffing is probably touching the body or chassis and is shorting to ground every time you press the pedal.