More than likely the blend door has or is about to break off. Common problem on '98-'04 grand cherokees. A full explanation is offered on a website called heatertreater.net . Very useful. Pictures and videos show the problem quite clearly.
Check Fluid levels first if you do not have enough coolant you wont get heat.... you could have a clogged up heater core or a baffle door is not functioning properly.... same for the AC with the baffle door... top off the refrigerant for the AC if you get the heat working and the AC still won't work properly
The problem is most likely with the blend doors on this model. Check the web site at HeaterTreater (.net) for diagnostic procedures and a cheap,easy fix.
Can be a thermostat stuck open. Replace the thermostat and service the cooling system. Can also be a heater control valve malfunction.
No, the XJ Cherokee does not have the same heater box as a WJ Grand Cherokee.
The Grand Cherokee is notorious for failures of the air flow control. However the Cherokee has the same basic problem. The blend door has a tendency to break, killing control over air flow through the heater core. The fix is fairly simple with the kit from HeaterTreater. Check the product at heatertreater.net.
No, the entire dash has to be removed.
The grand Cherokee is a body style, sport is a trim package that is used on all jeep models(wrangler, Cherokee, grand Cherokee, patriot, ...)
Cherokee Laredo, no. Grand Cherokee Laredo, yes.
No, the XJ Cherokee does not have the same heater box as a WJ Grand Cherokee.
There are several things that can cause heater problems in your 1998 Jeep Grain Cherokee. The most common cause of heater problems is low fluid in your cooling system.
I have a 1999 -- same problem, and I've heard that it's a common one.
Common problem. The heater grid burns a hole and the only fix is to replace the element.
Yes
Do you live in an area that you need your heater?
The Grand Cherokee is notorious for failures of the air flow control. However the Cherokee has the same basic problem. The blend door has a tendency to break, killing control over air flow through the heater core. The fix is fairly simple with the kit from HeaterTreater. Check the product at heatertreater.net.
On a 4.0L, yes one of the heater hoses does.
The heater core is inside the hvac housing under the dash.
It is bolted under dash on passenger side.
bad heater core.
The most common problem is with the blend doors. Check heatertreater.net for diagnostic information and an inexpensive fix.