Cooling system aux fans not working 2006 VW Jetta

ANSWER : Hello – in addition to the coolant temp sensor that triggers the cooling fan operation (so does the AC switch on most cars), the fans utilize one or more relays that route the power to the fan motor itself. Since you are able to make the fans run by bridging the sensor connectors, it seems likely that the coolant at the sensor is not reaching "trigger" temperature. You can check this with an infrared temp sensor o confirm either way. For assistance, I recommend a coolant fan inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.

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 : 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 : I would first look at the diagnostic trouble codes. Those codes are available because the check engine light is on. If the fuel pump is not running (momentarily) at key on, that fault alone will prevent the car from starting as there will be no fuel pressure. Pump output and pressure can be directly tested and you can also check for electrical power to the pump. To find out why the engine will not run, the recommended diagnostic is a no start diagnostic. If you request that service, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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 : Check the fuses with the auxiliary charging ports to see if they have burned. If the fuse is good, then there is an open or short within the wiring to the charging ports. The radio has an auxiliary wire attached to it to turn on the system. Check all of the wiring with a digital ohm meter to see if there is an open or a short that will cause the port to not operate properly. If you need further assistance with your charger ports not working, then seek out a professional, such as one from Your Mechanic, to help you.

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.