My ac slowly stopped working after just two days.

ANSWER : Hi there. In both cases, when an AC system is not working and a warning light is coming on the dashboard, typically a professional mechanic will complete the same initial inspection, which is to download the stored error codes that triggered the warning light initially. This tends to give them an idea as to what is causing the problems. This could be something as simple as an electrical relay that is faulty or loose or an indication of a computer related "glitch". Either way, the best way to move forward is to have a professional mobile mechanic complete a check engine light inspection.

ANSWER : The air conditioning system relies on a full system charge to function properly. A poorly operating air conditioning system is usually caused by a low charge from a leak. If the air conditioning compressor electronic clutch fails, the fuse blows or the relay burns out, you will notice the lack of cooling. The refrigerant inside the air conditioning system is a gas whose use and handling require a certification. Consider hiring an experienced technician like one from YourMechanic who can come out and give your vehicles air conditioning system a performance check which includes checking system pressures in an effort to offer you a more personal diagnosis.

ANSWER : The problem you are describing likely stems from an intermittent electrical fault in the wiper circuit. The windshield wiper system uses a small electric motor to move the wiper arms that you see on the windshield. That electric motor is controlled through a switch, relay, fuse, and wiring. One, or more, of those electrical components has failed although it is also possible that the mechanical arms are binding (seized, if the lubricant has dried out) thus causing the electric circuit to the motor to overload. Regardless of the underlying fault, if you request a non functioning wiper diagnostic/repair, 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 : The blower switch and the plug connection on the back of the switch, as well as a faulty blower motor are likely, too. I would check the blower motor first as you can easily power the motor directly to see if it runs. If the circuit includes a blower motor resistor block, of course be sure to check if the resistor block has continuity (specified resistance in ohms) at each position. If the blower motor runs, I would check the switch as occasionally there will be a bad connection at the switch that eventually causes the blower not to work. The relay is easy to test and if it works consistently as commanded, you can assume there is no intermittent fault. Obviously, check the fuse in the circuit, too, but if the fuse is bad, that means there is a problem in the circuit that will have to be repaired. Fuses blow due to electrical faults (e,g., short circuits). If you desire, a certified mechanic from YourMechanic can diagnose the problem you are having in an electrical component diagnostic.

ANSWER : Hi There,
It sounds like you may have a faulty blower motor resistor. The highest speed setting may still work because in most cars in the highest fan speed settings the current bypasses the blower motor resistor. In some cars, if the resistor is failed, the fan may stop working completely. Another reason a blower motor resistor may fail is when the blower motor has a mechanical problem or when a foreign object jams the blower motor fan blade and prevents it from spinning freely. This leads to increased current through the resistor and causes it to overheat and fail. I would suggest having an expert from YourMechanic come to your location to diagnose your system to determine what may be causing the fan not to work properly.

ANSWER : If the A/C system was working properly (producing cold output) and then just "suddenly" stopped, broadly there are two possibilities: 1) you have a leak and consequently the refrigerant level is too low; or 2) the refrigerant charge is undisturbed (no leak) but for some reason the compressor has stopped functioning. If you request an a/c inspection/diagnostic, the bottom line is the responding certified mechanic will get it resolved quickly but here is an indication of some of what’s involved in diagnosing this. Using pressure gauges one first determines if there is any charge at all in the system. If there is a charge, you can attempt to command the compressor on and then see if high and low side pressures look reasonable (in range). If the pressures are good and the compressor does function, you move on to see why the clutch is not engaging when YOU command the A/C on via the switch at the dash. If, however, the mechanic cannot directly activate the clutch and get the compressor to even run, that typically means the compressor clutch is bad. Sometimes the clutch can just be changed on the car, so no big deal and you don’t even have to "open up" the a/c system. Other possibilities include a faulty low or high side safety switch which fault also prevents the compressor from starting. If you request the a/c inspection/diagnostic, the mechanic will resolve this. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

ANSWER : Unfortunately, since many hands have been on the car opening and closing a sealed system, it is hard to say what your starting point is "now". That is, if in the course of discharging and charging the system, moisture was introduced into the system and/or the system was not properly evacuated (purged of ALL air and moisture), those deficiencies alone will cause the "type" of symptom that you are describing. Let us assume the problem is not moisture or air in the system (the problem with moisture is it will periodically freeze and thaw at the expansion valve CAUSING intermittent cooling).

The first order of business is to confirm system pressures, high and low, while the compressor is on to get an overall indication of the system operation. Certain variances and patterns, in these pressures will give the technician clues as to abnormalities, such as blockages or compressor faults.

If system pressures check out and no unusual patterns emerge, you then have the possibility of an electrical fault – one that is possibly intermittent. These types of faults could involve the electrically operated compressor clutch, the high and low pressure system cut off switches, the wiring and on-off switch that connects all of this, and the condenser cooling fan.

With regard to that fan, if it is not cycling on and off as intended, that alone will greatly degrade the cooling effect you feel in the passenger compartment because the condenser is the part of the system that rejects the accumulated heat to the atmosphere. The bottom line is you need a specialized, certified competent, and most importantly an interested technician to "take it from the top" and get to the bottom of this issue. For further help with this issue, consider having a certified professional from YourMechanic diagnose the AC problem in order to have this corrected properly.

ANSWER : In your application, there is a replaceable blower motor resistor block. The resistor block permits multi-speed operation of the fan. If some fan speed settings work, but not others, the first thing to do is test the resistor block with a volt ohmmeter. If you desire testing, and replacement, as needed, please request a blower motor/resistor block diagnostic and the responding certified mechanic will get this taken care of for you.

With regard to the A/C system, if gauge pressures (high and low) are normal when the system does operate, there are really only two principle possibilities for intermittent operation. One is circulating moisture in the system (due to a saturated dryer) which periodically freezes (and thaws) at the expansion valve and the other is a failure in the A/C control system, that is the clutch, sensors, and other electronics that control the compressor cycling. The cause of the problem can be readily found if you request an A/C system diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.