In fact, the fix may be a relatively inexpensive repair that can be done in just a matter of minutes. And you need to know how to solve the problem immediately. Also, sometimes not using the compressor or the AC system makes it passive, and you may have to get it checked. You mentioned a solenoid valve and it probably means it's an externally controlled variable displacement swash/wobble compressor. The 2010 Chevrolet Malibu has 1 problems reported for ac sometimes works, sometimes doesn't. Low refrigerant causes evaporator frost to happen fast (basically that little liquid that makes it through can't cover the entire coil extension, so that it boils only inside one part of the evaporator, near its inlet; the evaporator progressively develops frost across all its surface as the actual boiling location progresses along the evaporator's coils). Strange but... will look into your suggestions. Note : When AC is off, the low pressure is 80 PSI. If the air is warm to cool, but not cold as it should be, there may be an issue with air flow. So if your vehicle’s A/C is only kicking out hot air, you should take steps immediately to get the problem fixed. If you’re unable to visually locate any electrical issues, it may be time to take your vehicle to an experienced dealer for further diagnosis. Definitely a VS16. Once you step on the lot or in the showroom, our personable and caring team of auto specialists will show you why we've remained Sedalia's leader for new & used trucks, SUVs, cars and more. Why are the edges of a broken glass almost opaque? Find top-quality Dodge, Chrysler and Jeep, including the Ram 1500, Wrangler/Grand Cherokee and other models designed for getting the job done or getting through some of the serious farm and rural country Missouri is known for. Chrysler: Chrysler 200 Touring, Chrysler 200 Limited, Town & Country, Chrysler 300, Jeep: Patriot Latitude, Compass Latitude, Grand Cherokee (Limited, Overland, Summit), Wrangler, Bryant MotorsCentral Missouri Best Car Dealership Serving Customers in Sedalia, Warrensburg, Whiteman Air Force Base, Jefferson City & Surrounding Areas including Marshall, Boonville, and Clinton, MO, 5 Reasons Why Your Car Heater is Blowing Cool Air, FCA Announces RAM Electric Pickup Truck Coming Soon, Best Off-Road OHV Trails Near Sedalia, Missouri, Properly Signing Over Your Used Car Title. Rotated all the PDC relays around, they have the same ID, other than ABS pump. I guess I just won't be going anywhere during the summer. Best if they have some sort of leak detectors. The condenser of your vehicle’s air conditioning unit is supposed to re-cool hot refrigerant once it has been compressed. If the condenser is blocked by some type of debris from the road, then it will be unable to properly cool the refrigerant and your car’s system will continue to operate with overheated refrigerant. 4. But when the ac unit isn’t serving its goal, things become a little uncomfortable for us all. Evaporator frost stops heat exchange and clogs airflow through the evaporator fins so that, more than no cold air, you should actually temporarily feel a reduced airflow. Having the system serviced by a pro is the only way of not doing any damage when dealing with variable displacement compressors. Did "Antifa in Portland" issue an "anonymous tip" in Nov that John E. Sullivan be “locked out” of their circles because he is "agent provocateur"? For best-in-class towing & fuel economy, test drive Motor Trend's Truck of the Year for both 2013 and 2014, Dodge's Ram 1500. I will take the AC every time. Sometimes after using the control buttons for several years, they can get gummed up and stop working. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So the compressor is not receiving the same cooling effect from the refrigerant that reaches it. But A/C is more than just comfort; it’s a safety issue too. I guess you set it on max cold (with manual climate control: no heat, AC on, max blower and recirc on) and if so the evap should have immediately reached 0°C (27.7 PSIG suction for R134A) on max charge and then stayed there (variable displacement compressor so it doesn't cycle). If there doesn’t appear to be anything blocking the condenser, it’s possible … If its hot outside then the ambient air … What did Amram and Yocheved do to merit raising leaders of Moshe, Aharon, and Miriam? I think it’s more likely an electrical problem, like the pressure switch on the dryer canister, or the clutch relay near the fuse box. Dodge SUVs are one of our best sellers. heater control switch switches in between air conditioning unit and heat not the identical system air conditioning unit device runs by freon well did and heater operates off coolant high temperature from heater center the swap in between scorching and chilly not switching swap red to blue or air conditioning to high temperature / … And if you're really in need to speed, the Dodge SRT Viper is in a class all to itself. Replacing: Out with the Old, In with the New. Perhaps even the dash switch is worn on a car this age. There is no battery to operate the blower. New Cars: Come test drive our Chrysler 200, 300 and Dodge Avenger. Check the heater core temperature. At least some of them must be freezing cold. Bryant Motors has been the premier go-to place for central Missouri's transportation needs for nearly 80 years. New Trucks: Find the best selection of both 2-wheel and 4-wheel drive trucks in central Missouri at Bryant Motors. A/C sometimes works and sometimes doesn't. As my current low side pressure is 32 PSI when AC MAX, do you think its still low? Hi there. 3. In fact, one of the most dangerous places for someone to be during a heat wave is inside of their car without A/C since temperatures can spike to dangerous levels. Best answer for Why Does My Air And Heat In My Car Only Work Sometimes. We’d be happy to have our experienced ASE-certified technicians take a look and get you back on the road in no time. There is a 'low pressure' switch that will not allow the compressor to engage if the refrigerant level is low. How often does the system fail? AC systems featuring one of these must be charged by refrigerant weight, not by pressure. My air conditioner doesn't always work. This is done using the airflow that comes through the front of your car as you drive. Does your A/C work fine when you first start the car but then fail after a while, especially on hotter days? Over time, this can cause your car to start emitting only hot air. Spot a possible improvement when reviewing a paper. In 1 John 4:18, does "because fear hath punishment" mean, "He who fears will be punished"? . According to my mechanic, it is the A/C Expansion Valve. To learn more, see our tips on writing great answers. What does a faster storage device affect? Do I have to stop other application processes before receiving an offer? Unfortunately i don't. ... too much refrigerant flowing into the evaporator doesn’t lead to cooler air. ... Honda Accord - Car air conditioner works sometimes and doesn't work sometimes- question about Cars & Trucks × Ask a Mechanic Now. Our Sedalia-based auto dealership serves the new and used car needs of surrounding communities, including Warrensburg and Jefferson City. The air conditioner … 1st thing to check is that the AC rad / condenser is clear of any debris and there's nothing in front of the air flow to it, next ensure that the AC pump drive belt … It Will Cool When Sitting In Park. The thing that leads me to believe it's not a poor electrical connection is the consistancy with which it doesn't work at first, then works after a few minutes and continues to work. Asking for help, clarification, or responding to other answers. How can you know it's TXV or orifice tube, without even looking for anything resembling one of these two devices or pulling any drawing at all? J.P. SAN NICOLAS MEMBER; 2013 NISSAN SENTRA; 80,000 MILES; Already vacuumed and charged AC. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Find out what could be causing your car air conditioner to blow cold then warm! Hi Al_, yes the compressor label quite hard to see, but it is written Ford and VS 16. here is image i could take. Add the lowered oil return, and the compressor is getting hotter than it should. Here are some potential causes for this code: •The wiring connector or "pig tail" on the throttle body could have a poor connection. When you notice no cold air from the vent outlets, go and check the A/C tubing under the hood. But no cold air blowing out. Sometimes it take a few seconds for the blower to activate at the "high" setting and this would explain the delay you describe. Is the air conditioning control panel functioning normally? Why is the country conjuror referred to as a "white wizard"? •Possible shorting... Read more. ... My 2005 Scion XA air conditioner will not work when I first start the car, it blows only hot air. Air conditioning can not cool due to a fault in the electric system that doesn't allow the fans to work … Bottom line, go follow Jan's recommendations as soon as you can. You'll also find the most knowledgeable and friendly sales staff out in all of central Missouri. Checked for battery at the blower, when the car is running. Why doesn't the fan work when the LED is connected in series with it? If you suspect leak, let the system be tested for leaks. Intermittent cooling is often caused by the components of your vehicle’s AC system freezing up. At least some of them must be freezing cold. Other times it doesn't, no matter which speed or setting I have it on. What is the name of this type of program optimization where two loops operating over common data are combined into a single loop? Be aware though, that the vacuum test done by A/C machine doesn't necessarily find a leak unless it's big enough. New SUVs: When it comes to Jeeps, we have the best selection of all Jeep models including Cherokee, Grand Cherokee, Wrangler, Patriot and Compass. Were all the air vents starting to get warm? Checked for incoming resistance ground to the blower, from the dash control switch and it works. Collecting Initial Information Turn the air conditioning on while the car is running. It’s sometimes possible to see an oily substance accumulating around these connection, which is likely the source of the leak. my car ac will only work sometimes? This can easily be removed from the grill of your car and the issue should be resolved. Sometimes it comes on just fine...other times nothing happens when I turn it on. Then when the car is cranked up again, if it's still warm the AC will kick on much quicker, sometimes instantly as if nothing was wrong. 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