Hi, Sounds as if the motor bearing could be gone. The heater fan is behind the glove compartment. When you open the glove compartment, you'll see the two compartment stops on either side of the box, simply press these in and the box will drop down. Should you want to remove the box, simply remove the two screws and remove the box. There's no alignment issue as the tabs where the screws go through have a small nub that fits into a hole. The fan is more accessable with the door removed. The fan resistor is right there too. That's usually the culprit when you lose some of the fan speeds, usually the top two or the bottom two. Good luck. Steve
Remove the water supply hoses to your 2001 Geo Tracker heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
The 1997 Geo Tracker block heater does have a frost plug. The Frost plug will be a few inches below the block heater.
you must remove the dash it's in the heater box
This can result from heater core blockage. If it is partialy blocked, you may notice a little heat with the fan on low, but it goes cool when the fan speed is increased. Other signs of blockage may include engine temperature fluctuation, and/or excessive pinging (pre-ignition). This can also be caused by the engine thermostat being stuck in the open position. Cracked heater core.
Hose blockage, core blockage, disconnected heat valve.
When you have the heater on, does it just blow any air at all? or no air?
it should be below the radio in the heater box . must remove entire dash
no year? wow top of heater box. on 96 , remove glove box door.
AC and heater are 2 different systems. The heater works by channeling fluid from your radiator to a heater core usually located under your dash. Heater may not work due to blockage in the line from the radiator or the heater core under your dash may be faulty.
bad heater core, heater hose blockage, low coolant, bad heater valve, bad control head. With my car, it was Heater matrix clogged with radiator sealant. The workshop cleaned it and it's start working fine!
Low coolant, bad coolant, blockage in the coolant line, bad heater core or element, bad thermostat
The heater hoses on a 305 engine run from the intake manifold to the heater core and the heater core to the radiator. This creates a constant source of heat to supply the heater.
The heater fuse for a 1993 Geo Tracker is located in the fuse box that is inside the engine compartment on top of the battery. It would also be a good idea to check the wires on the heater relay that is on the passenger side of the engine compartment on the fender wall. It is just behind the washer fluid receptacle.
low on anti freeze or blockage in heater coil
if you smell it inside, it's the heater core it has a leak.
Low coolant, bad thermostat, blockage in waterlines ot jacket.
A blockage in the heater core is the most likely cause. This is a difficult and expensive repair.
Sounds like the temperature blend door is at fault.
That'll be an airlock, bleed the heater and it will go way
Could have a blockage in the heater core. Or simply need a coolant flush or another item. To be safe I suggest you shop around for the best price to get it fixed.
Disconnect one side of both heater hoses from either the engine or the heater core, whichever is easier. Fabricate fittings to allow you to attach a garden hose to either the inlet or the outlet of the heater. Connect another shorter piece of hose to the remaining heater hose and direct it into an empty 5 gallon pail to reduce the mess. Gradually turn on the water to wide open and allow the running water to flush the heater core. Reverse hose connections to reverse the flow and flush again. You will be amazed as to how much crud comes out of there. If this fails to clear the blockage you will have to replace the heater core to remedy the situation.
if engine temperature ok, either air lock/blockage in heater exchange matrix or problem with heater control cable. in my case it was the headgasket on its way out. from dom coolent level stops it to if too low!
Check both the supply and return heater hoses from engine to heater for blockage or clogging: remove them and flush. Also check the inlet and outlet pipes on the engine and heater core for gunk buildup and leakage.
Check for any blockage or buildup in the hoses to and from the heater core itself. Also check to make sure the thermostat is working properly. A cooling system flush may also be needed.