Question about 2005 Dodge Caravan

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A/C suddenly quit cooling, literally just quit, but the heater, and blower works. I haven't seen any leaks in the lines, but without a dye it is hard to be sure. Ran over an animal the night before, could it have damaged something?

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I would first try a recharge kit. Get one with a gauge so you can see the level. These small bottles with a short hose and gauge are available most anywhere (Wal-Mart, K-Mart, Target).

Posted on Oct 03, 2009


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I don't mean to be rude, but you should probably get somebody to look at it that knows what they are looking at. Coolant leaks (like all fluid leaks) can be very evasive. I have seen water pump leaks that can drip off of the corner of the engine and make it look at first glance like a hose is leaking. In some cars, the engine is packed so tight into the engine compartment that it can be really hard to tell. I have a bore scope that I use routinely to try and track down these things. Other techs use bright flashlights and inspection mirrors. I have seen head gasket leaks that we had to put dye in the cooling system and use a UV light to find it.

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Air conditioner quit cooling

You need to have it recharged, and checked for leaks in your ac system. they make a dye that bleeds out of the lines if it is leaking and can find out were if you see the dye.

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I just dealt with this problem. Turns out that the equinox cools the tranny fluid by running it through the radiator (in a closed system). Problem I was having was that the coolant from the radiator was leaking into the transmission. The only reason they found this was because the car started shifting rough and I had them check that problem out at the same time I had them look for a coolant leak. When the technician pulled the transmission drain plug, he said it looked like pepto running out. Only way to fix was to replace the entire radiator ($800). They also had to flush the transmission to get all of the coolant out of the housing.

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The evaporator coil is located in the heater-A/C housing, under the instrument panel.

The heater-A/C housing assembly must be removed from the vehicle and the two halves of the housing separated for service access of the heater core, evaporator coil, blend-air door, and each of the various mode control doors.

WARNING: On vehicles equipped with airbags, refer to Airbag Systems Safety Information and Procedures. Before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury. See: Restraint SystemsAir Bag SystemsService Precautions

  1. Disconnect and isolate the battery negative cable.
  2. Remove the instrument panel from the vehicle.
  3. If the vehicle is not equipped with air conditioning, go to Step 6. If the vehicle is equipped with air conditioning, recover the refrigerant from the refrigerant system.
  4. Disconnect the liquid line refrigerant line fitting from the evaporator inlet tube.
    • Install plugs in, or tape over all of the opened refrigerant line fittings.
  1. Disconnect the accumulator inlet tube refrigerant line fitting from the evaporator outlet tube. See Refrigerant Line Coupler for the procedures.
    • Install plugs in, or tape over all of the opened refrigerant line fittings.
  1. Drain the engine cooling system.
  2. Disconnect the heater hoses from the heater core tubes. Install plugs in, or tape over the opened heater core tubes.
  3. Unplug the heater-A/C system vacuum supply line connector from the tee fitting near the heater core tubes.
Unplug the heater-A/C unit wire harness connector, which is fastened to the heater-A/C housing next to the blower motor relay.
  1. Remove the five nuts from the heater-A/C housing mounting studs on the engine compartment side of the dash panel. Remove or reposition the evaporation canister for additional access, if required.
  2. Pull the heater-A/C housing rearward far enough for the mounting studs and the evaporator condensate drain tube to clear the dash panel holes.
  3. Remove the heater-A/C housing from the vehicle.
  1. Position the heater-A/C housing to the dash panel. Be certain that the evaporator condensate drain tube and the housing mounting studs are inserted into their correct mounting holes.
  2. Install and tighten the five nuts onto the heater-A/C housing mounting studs on the engine compartment side of the dash panel. Tighten the nuts to 6.2 Nm (55 in. lbs.) .
  3. If the evaporation canister was repositioned during the removal procedure, reinstall it to its proper position.
  4. Connect the Heater-A/C system vacuum supply line connector to the tee fitting near the heater core tubes.
  5. Unplug or remove the tape from the heater core tubes. Connect the heater hoses to the heater core tubes and fill the engine cooling system.
  6. If the vehicle is not equipped with air conditioning, go to Step 10. If the vehicle is equipped with air conditioning, unplug or remove the tape from the accumulator inlet tube and the evaporator outlet tube fittings. Connect the accumulator inlet tube coupler to the evaporator outlet tube.
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  8. Evacuate the refrigerant system.
  9. Charge the refrigerant system.
  10. Install the instrument panel in the vehicle.
  11. Connect the battery negative cable.
  12. Start the engine and check for proper operation of the heating and air conditioning systems.

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1 Answer

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1 Answer

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