When I turn on the "heat" in my 2002 jeep Wrangler X the "air" runs also. I can feel it in the peddle as little surges as the compressor kicks on and off. When I lift the hood I can hear the air conditioning system kicking on and off. The condenser gets condensation and becomes cold. What do I do?
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Sounds like low flow issue. Flush and clean system, PROPERLY! Buy a flush kit, drain system, blow compressed air through, fill with cleaner/water mix, run for 30 min with heat on, drain system, blow out with compressed air, fill with water, run for 30 min, drain, blow out with compressed air, fill with 60% coolant mix.
Well this is different since most questions now are about no heat. If one ac line is cold and the other is warm, I would suspect a blend door under the dash is not working. The blend doors direct air thru the heater core and the vents.
You most likely have a partially blocked heater core, and at least it isn't leaking on the floor.
You might have sucess in trying to flush your cooling system, but often you end up replacing the heater core to fix the problem. Other possibilities are blockage of the air inlet on your heating system by leaves or other debris, but not likely in this case if you still have good air flow, but just not hot air.
Run it for a while and check the two heater hoses to the fire wall for the heater core. Turn the heat inside on low and floor. The hoses (when the jeep is hot) should be about the same temp. One will be slightly cooler than the other one. If this is not the case and one is much colder than the other you have a plugged heater core. Mark the cool hose let the jeep completely cool remove the cold hose and the hot hose use a garden hose to flush the core in direction of the cold side to hot side. If this is not it you have a air pocket in the system or your blend doors in the air box under your dash are broke.
This may be the AC compressor cycling switch is defective. It is located in the larger of the 2 AC lines coming from the compressor, it has a wire connector to it with 2-3 wires. To verify this is the issue jumper the connector with a small piece of wire and see if the compressor runs.