No heat I have a 2001 chevy tracker 4 wheel 2.o liter engine. Replaced the thermostat and still no heat

Does 4x4 high work?

If there is cold air coming out the heater than there is air in the system. After you replaced the thermostat did you run the engine at idle with the radiator cap off until the engine came up to operating temp? Doing this will purge the air from the system.

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-Take the battery to the part store to test for you. It could drain too
much voltage. That's why it keep burning the alternator.
-And make sure alternator fuse is correct amp.

mai

it may be the sensor if it has one or it may be the unit it self

Go under the vehicle and check the four wheel drive linkage.

2001 Chevy Tracker 6 cyl Four Wheel Drive Automatic

My 4 wheel drive stop working on my 2001 ZR2 chevrolet Tracker. It has a shifter on the floor and when it is put into 4 hi or 4 lo. the vehicle does not change from two wheel drive into 4. The 4x4 Dash light indicator stop coming on. What should I check?
I lost 4x4 traction when driving in icy conditions.

the mass air flow is part of the throttle body assembly. its where the big air hose from the air filter hooks to on the motor. here is a picture to aid you. hope this helps

Yes there is, and the VIN number is the equivelant to human DNA for a vehicle, and the 8Th digit of the VIN is the engine identification code, and yours is a "C" so the engine in that vehicle is a 2.0 liter, and the engine size should also be printed on the vehicles emission label under the hood.

it actually sounds like you dont have enough coolant.if coolant level is full,try changing the thermostat.

You have an heated Oxygen sensor. 2 of the wires heat up the sensor and keep it at a certain temperature, it is turned on and off by the computer. The other 2 are use to send a very low voltage reading back to the computer to tell the computer if the engine is running rich or lean. I don't have a diagram to tell you which wire does what but you can get a manual and that should give you the information that you need and tell you how to trouble shoot it to tell if the sensor is bad or not, you may want to look for a wire laying on the exhaust, I have found wires burnt and lay on the metal.