Mechanically the piston cannot overcome an internal resistance to move. Your gonna have to see if the compressor is actually getting a voltage when it is stuck. His next two options are to replace the compressor or replace the whole system. The first and most obvious thing to do when your compressor won’t start is … Anytime a climate control system is set to defrost it engages the compressor. HVAC tech just attempted to put on a hard start kit (I think it was a TT6, didn't find it on Grainger's site, I'll check when I get home). My problem is that my AC does not work. You do this by back probing the connector on the compressor. If the clutch doesn’t work properly, you will still be able to drive your car. Disconnect the refrigerant lines from the A/C compressor and remove and discard the seals. Common solutions for: My AC Won't Turn Off. We're here to help, and it's FREE! When an AC compressor won’t turn on, the process can’t begin. This is regardless if the AC button is off or on. Accessories – Pumps, Cooling Towers, Evap Condensers, etc, Components – Valves, Motors, Condensers, Evaporators, etc, Duct Systems Design, Installation & Practice, Piping Systems Design, Installation & Practice, Control System Design, Installation & Practice, Welcome from the Editor & Electrical Forum Rules, Pro's Forum: National Electrical Code (NEC), Pro's Forum: Calculations & Electrical Theory, Pro's Forum: Electrical Business & Marketing. Information Copyright © 2000-2019 by NICOclub, all rights reserved. If your car is compatible with R134a type of refrigerant, attaching a can to the system will override the low-pressure switch and restore the normal function of the compressor clutch. Well, it seems that the problem is not totally fixed. Postby georgeNCSUee » Fri Aug 19, 2005 9:49 am, Postby NISTECH » Fri Aug 19, 2005 2:37 pm, Postby georgeNCSUee » Sat Aug 20, 2005 8:21 am, Postby NISTECH » Sun Aug 21, 2005 3:12 am, Postby georgeNCSUee » Wed Aug 24, 2005 5:17 pm, Postby NISTECH » Wed Aug 24, 2005 7:04 pm, Postby georgeNCSUee » Fri Aug 26, 2005 7:04 pm, Postby NISTECH » Sat Aug 27, 2005 3:30 am. Compressors may be of a … A/C compressor stuck "On" Quote; Post by georgeNCSUee » Fri Aug 19, 2005 9:49 am . Participate in over 40 different forums and search/browse from nearly 3 million posts. It sounds as if the compressor has indeed 'got stuck'. A "hard starting" "tight" air conditioner compressor will probably draw excessive current (Amps) during startup, so that measurement may be used as part of … Remove the nuts (1 and 3) that secure the A/C suction line (2) and A/C discharge line (3) to the A/C compressor. It may very well be the clutch disc is dragging on the clutch assembly allowing it to stay engauged. The relay was the problem even though I measured it and all. It really does not provide much other than money in their pocket along with a "one year warranty". Thanks! There's something weird that's been happening with my VUE for the last couple of weeks. The thing is, I not sure if it's starting to get stuck again or if whatever part was causing the problem in the first place is returning to normal operation. If your car’s ac compressor goes bad or fails over time, your engine can seize due to the stuck compressor. If it’s not because of the weather, then AC compressor stays on all the time means there is something wrong with the unit. jsevinsk. Your "relay option" sounds fishy to say the least. Make sure they check everything relating to the non-operating compressor. It sounds as if it is stuck in defrost mode. But if it begins to stay stuck 'on' all the time, what do you think the problem could be? if the clutch is stuck ON all the time, the compressor is not able to disengage in case of overpressure or underpressure. Yes... we are 20 years old. I would suggest picking one up just in case. less of a load on the relay. Check these 5 things before calling a professional for air conditioner repair. It will likely cause it to hang up again sometime down the road. One of the common problems found while troubleshooting reciprocating compressors is that they simply fail to start. One common mechanical cause is a stuck piston. I know you can get it off with the AC still on the car because my mechanic did it to mine. Freeing a seized AC compressor involves determining what caused the seize and performing the necessary repairs. 2,139 Posts . Post photos, respond to polls and access other special features. There are several different compressor designs, but all perform the same function: they move, or pump the refrigerant throughout the system, and they compress the low pressure vaporized refrigerant into a high pressure vapor. AC Compressor stuck on until engine turned off... Jump to Latest Follow ... but when I put it back into the standard floor vents or dash vents only positions the ac compressor will continue to stay on (I can hear and feel it when at a stop). BOTH scenarios are bad and can lead to complete failure of the compressor, AND ruin the rest of the A/C system with debris. Now, after I turn off the A/C, the clutch remains engaged for a little while but after that it disengages. July 5, 2016, 10:17pm #3. Try swapping the relay with another of the same kind. AC Compressor Operation. I'd still get a 2nd opinion from a reputable firm on compressor!! The stuck clutch fault description doesn't seem to fit; if the AC compressor was turning on and off just fine, then the compressor clutch is not stuck. Install plugs in, or tape over all of the opened refrigerant line fittings and the compressor ports. To determine if the thermostat is shorted out, use a multimeter to test it for continuity. Just adding refrigerant will solve this problem. Our 20th year anniversary is May 21, 2020. If not troubleshooted as soon as possible, you will face a jaw-dropping electricity bill, plus your AC will be subject to extra wear and tear from unnecessary over-working. I have seen it so many times on vehicles where they just don’t use their AC; however, if your AC compressor doesn’t work, you won’t have cold air coming from your vents. The low-pressure switch tells the car that the clutch needs to engage and disengage and will shut off the A/C compressor. A/C compressor Freon help Hello I have a 2010 Nissan Sentra , the engine rubber belt got stuck and burnt and it tore off, based on all the wheel it seems the A/C compressor doesn’t turn as smoothly as the other one so we ordered a replacement. 01-31-2007, 04:42 PM. I recently got a 95 240SX SE , wrecked, totally stock, and I am in the process of fixing it before I start with the mods (if I ever do). If your ac won't turn on, you might be able to fix the problem yourself. A seized AC compressor causes the AC to malfunction. I am going to further monitor this to see if the 'stuck time' get longer or shorter. If you saw smoke coming from the belt, then either the a/c compressor clutch was engaged or the clutch was seized to the compressor shaft. I think we need a better understanding of what the mechanic found. Forget it. Yes, there is a way to reset the compressor on a window mounted air conditioner. Even though the AC is off (AC button off and knob below floor setting), it's acting like it's on. And the faster the engine turned, the more pressure the compressor developed. It will buzz for about 5 seconds then click off. It will spin freely until you turn the air conditioning on. Got questions about your Nissan? A "shorted" compressor is one with the electrical windings shorted and NOT mechanically stuck. I feel extremely newbieish. On both of my Lincolns, the AC compressor runs all the time, summer and winter, if the control is on any setting other than off. Discussion Starter • #1 • Sep 11, 2006. AC Compressor stuck on off (1997 Mercedes-Benz E320) I have a 1997 Mercedes Benz E 320. Your window mounted air conditioner has a reset button mounted near the power cord that makes the entire air conditioner go back to factory defaults, including the air compressor. The A/C compressor may refuse to start at all, or may be hard-starting depending on when it last ran and what it's temperature is. well to me it sounds like the ac compressor is shot. Any idea which component of the system would cause that problem? Hi there! This would be due to improper shimming of the clutch disc [pretty rare for that to happen], 240SX Forums | 180SX Forums | Silvia Forums, Sentra Forum / Infiniti G20 Forum / Pulsar / NX Forum, G35 Forum, G37 Forum, G25 Forum, Q40 Forum, G35 and G37 Suspension, Brakes, Wheels and Tires, Nissan / Infiniti Truck, Crossover and SUV Forums, Nissan Pathfinder Forum / Infiniti QX4 Forum, Infiniti FX35 / FX45 / FX37 / FX50 / QX70 Forum, Nissan Tires, Wheels, Brakes and Suspension, SR20DE / SR20VE / SR20DET Forum (front drive). IIRC its the blue relay which is like 12bucks at the dealer. See if that makes a difference. In earlier air conditioning systems, the compressor ran at full capacity whenever its cycling clutch was engaged. there is a way to check it to be sure, disconnect the harness and find the hot and neutral wires and use jumper wires to a good car battery if it turns it is not shot if it does not turn it is time for a new one. Right on, man! That didn't fix the problem. Upon a close inspection, it seems that the RV air conditioner compressor not coming on.The performance of the AC system depends on its components and the compressor is a vital one. An automobile air conditioner (AC) compressor compresses refrigerant and allows it to circulate through the system, cooling the vehicle. (I just leave it on full auto all the time anyway.) Actually, I do not think it was the relay (yes, it was the blue one). Components – Coils, Heaters, Motors, etc. Stuck compressor generally refers to a compressor that is simply stuck and won't start. Sometimes a compressor is diagnosed as stuck when only the capacitor or start relay is bad. The air compressor still works great when jumped by electric but shuts off as soon as the jumper cables are pulled off. Material may not be copied or reprinted without written permission. It could be the relay is hanging on once it is engaged. The first thing to do is determine if it really is mechanically stuck. The compressor in my window AC unit does not turn on. Check for Power. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. When refrigerant is still in the compressor, it is considered to be at the beginning of the air conditioning cycle. You are driving your RV under the scorching sun and suddenly realize that the interior has turned into an oven. Since my compressor remains engaged even with the controls disconnected, does that mean that the A/C control unit is OK and the problem is somewhere else (like the ECU)? If a serpentine belt goes around an a/c compressor clutch pulley and the compressor is locked up, it is okay to have the belt as long as the a/c compressor clutch is not activated. The #1 question asked by NEW MEMBERS. Ideas? They are independent publications and are not affiliated with or endorsed by Nissan or Infiniti. The only way to modulate the pressure produced by the compressor was […] Ask Our Pros-Owner Assistance - NO DIY advice will be given. Easy. You can figure out the source of the trouble and fix by yourself if you know where to look into. This could be the result of many different causes, both electrical and mechanical. NICOclub's Nissan forums and Infiniti forums and all affiliated sites are the property of HDS Holdings, Inc. And when the A/C controls are disconnected, the compressor should be disengaged, right? The reason is because there is no power going to the Air Compressor. Compressor on the outside AC unit stuck. Caddyman. If you are traveling at high speed on the road or your car shuts off while operating, you no longer have any power steering or brake boosters to easily stop your vehicle. How to manually engage AC compressor clutch when the system is low on antifreeze? This switch is located on the metal canister next to the compressor. 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