Cooling fan only works when A/C is on

ANSWER : Hi there. It is best to always put on the OEM parts that are required for the vehicle. However, you can get a flex-a-light clutch fan for your vehicle as long as it will bolt up to your water pump pulley and clear the radiator and shroud. I recommend having a clutch design fan for your vehicle and not a fan that spins with the engine all the time. Those fans will cause the engine to overheat on highways and in town especially in hot weather. If you need further assistance with your cooling fan, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Hello,
You should check with the person you bought the fan from. I show a listing of a single or a dual fan system. You should replace the fan with the same as what was removed. You should not use the single fan when you were equipped with a dual fan system. The wiring and programming is different depending on how it was made.

ANSWER : This can happen for a number of reasons such as being low on refrigerant, a faulty AC thermostat switch or a failing AC compressor. We do currently offer services for repairs/inspections of air conditioning systems.

ANSWER : Hello. The cooling fan is activated when the temperature of the car reaches slightly above normal operating temperature. If the engine stays cool long enough, the cooling fans will not come on. If the engine gets warm but doesn’t overheat the cooling fan may stay on after the car has been shut off in order to cool down the engine. It is also possible that the coolant is low. This could cause the issue that you are describing with the engine cooling fan. It may be a good idea to have a certified technician, like one from YourMechanic, come out to top off the coolant in your vehicle.

ANSWER : What you are describing sounds like a failure of the blower motor that circulates air in the HVAC system, however, there are certain faults that could occur in the electric circuit that powers the blower motor. If power is reaching the blower motor when the blower switch is in the on position and the blower motor is not functioning as intended then the blower motor is condemned and replaced. On the other hand, if there is no power, then the blower switch and the plug connection on the back of the switch, as well as the rest of the circuit should be inspected. If the circuit includes a blower motor resistor block, of course the resistor block has to be checked for continuity (i.e., specified resistance in ohms) at each position. If equipped with a relay in the circuit, that is easy to test and if the relay works consistently as commanded, you can assume there is no fault there. If you want these diagnostic steps performed by a certified Mechanic, dispatched by YourMechanic right to your location, please request a non functioning blower motor diagnostic/replacement and the responding mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

ANSWER : Hi there. Your issue is the ECT sensor B is not closing the loop when engaged. There is power to the sensor A from the computer, but the sensor B is not connecting when the vehicle is running hot or when the air conditioning is on. I recommend replacing the ECT sensor B, which is the on and off switch for the cooling fans. On the relay, terminals 2 and 4 are the direct circuit for the cooling fan, terminal 1 is the ground, and terminal 3 is for the circuit to the air conditioning system. Check the wiring between the fuse box and the terminal 3 for resistance and see if there is 0.5 ohms or less. If the meter reads OL, then there is a break in the wires and it would need fixed or replaced. If there is 0.5 ohms of resistance or less, then check the A/C switch and the ignition switch as they could be the source of disconnection. If you need further assistance with your cooling fans not working, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Hi there. There could be an issue with the electrical wiring to the fans from that connect to the coolant temperature sensor. Check the wiring for any loose connections or any corrosion that could keep the sensor from making a connection to the fans.

For the engine stalling only when hot, there could be an issue with the coil packs getting too hot. Check the condition of the coil packs and see if the harness is plugged in correctly. Make sure that the coil packs are mounted away from any additional heat source. If the coil is getting too hot, then the windings are expanding causing a break in the current making the coil stop generating a voltage making the engine stop running. When the coil cools down, the windings colaps and cause them to create the voltage needed to make a spark. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your stalling issue.

ANSWER : If the fans are not working properly and consistently to cool and condense the refrigerant in the condenser, pressure in the system could rise high enough to trip the high pressure cut off switch, thus accounting for the compressor shut down. There is a control circuit for the fans and that circuit will simply have to be traced for BOTH voltage drops and continuity and, as well, proper function of the relays and any temperature sensors that might be in the circuit. The factory wiring diagram is essential. To obtain this diagnostic, and get the required repairs implemented, please request an a/c condenser control circuit inspection and diagnostic and the responding certified mechanic will get this resolved for you promptly. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.