ac problems
Sometimes the ac works, sometimes it doesn't.
Here is an update: I replaced the AC relay. No change. Then replaced the Thermal Control Amp. AC seemed to work good for about a month, then back to the old tricks. I'm still not sure if the AC was just on a long run of coming on every time regardless of the replaced TCA, or in fact, a bad TCA was causing the problem to begin with, and the new one went bad after a month. Here's another clue: The AC is working, then for no apparent reason, it stops. But I leave it on hoping it will start up again ( I live in AZ) After a while, there is a loud screech from under the hood for about 10-15 seconds, then the AC starts again. Here's one more thing to mention. I know this will sound funny, but I think it is another clue. Now that it is cool, the AC will start every time you turn it on. It's when it is hotter than hell I have the problem. What in the AC system fails when it gets too hot, that won't fail when the outside temp is cooler?
I have two suggestions: 1. If you notice that the A/C only works while the vehicle is in motion, especially at speed (such as on the highway) but not while the vehicle is stopped, then the problem may be that the auxiliary fan designed to blow air over the condenser (looks like a smaller version of the radiator, and usually mounted to the front side of the radiator itself) isn't coming on while the vehicle is stopped. No air flow over the condenser means the refrigerant temperature remains the same through this part of the cycle, which translates to no temperature drop inside the car. 2. If you notice that the A/C functionality, or lack thereof, has no correlation to whether the vehicle is in motion, then the next thing I would look for would be a partially faulty A/C compressor clutch, or a fault in the wiring to the sensor that determines the clutch engagement. Realistically though, if you don't have an A/C manifold gauge set you are going to have a serious problem diagnosing A/C issues, as that is the tool that professional mechanics use to do so. Also note that your vehicle (unless it has been retrofitted to use R134a) uses R12, which is extremely bad for the environment should it escape. Bearing these facts in mind, I suggest that you take your car to a qualified local mechanic that specializes in air conditioning issues.
I'd put my money on the A/C compresser clutch or the control circuit thereof, only other thing that I can think of would be a low refrigerant level (or air in the lines?) Have you checked the refrigerant level?
Thank you for replying Doran. When this started a couple of years back, I took it to a "recomended" mechanic. When I went to pick the car up, he said no leaks. It took less than 1/8 of a regular size can of freon. And yes, I am aware of the problems with R-12. In fact, part of the over $400 to fix AC was to retrofit to R134a. Part of the problem I had at the time was that he "thought" the problem was a control switch, or something under the dash. The weather was starting to cool down at that point, so I started to pursue information on my own. It doesn't matter if the car is moving or not, when the AC stops, it stops. On the other hand, when it is working, it blows very cold . I'm not sure if he used an AC manifold gauge or not. Here's one other thing that may or may not have anything to do with anything. The day that I started having AC problems for the first time was the same day a fuel pump rely went bad. Could there be any connection between those two things? Would a faulty AC compressor clutch make a squealing noise while going bad? Thanks again.
To the best of my knowledge, you could get belt squeal from a bad A/C clutch, yes. Another possibility is an A/C compressor with a bad bearing, of the sort that doesn't like to start moving, but once in motion seems to be ok. Personally, I'd replace the A/C compressor and clutch as one unit. If you've had the system converted over to R134a, you can pick up an A/C manifold gauge set relatively inexpensively from Harbor Freight Tools (around $50 or so...if they're not in your are, check out http://www.harborfreight.com). As I had mentioned previously, such a tool is invaluable when it comes to troubleshooting A/C issues.
related question. anyone know how to remove those 3 pins/rivets from the clutch plate so you can thread the clutch removal tool in. i tried vice grips, screwdriver, etc. nada
there is no power in the AC switches, athey sometimes come and goes off. I dont seem to know the problem.
New NISSAN quashqa a/system sometimes it work properly and sometimes the clutch stops & blows hot air what is the reason it's not only my problem but it's many of us i cheched the gas it's ok sowhat would be the solution i work in a/c systems but it's different to me any help
ac work sometime
What does it mean when my 2008 Nissan Santa ac will not go off.
I need a
I have a similar problem with my 2016 sentra. Nissan has this as a feature of the car. Yes a feature, you heard that right. When braking “moderate/hard the engine management system turns the ac compressor off for 3-5 seconds. It does this because the car will stall out if it’s supposibly left on. I have been dealing with Nissan for over a month and their aware of this but say it’s a normal working condition. It’s a bullshit answer with an easy fix. Sorry if that’s not the answer you wanted to hear but that’s what the Nissan engineer that consumer affairs has come up with. Nissan won’t do anything to help you but show you the door like they did me.
Six years ago, when my ac problem began, I followed every lead, listened to every suggestion, and replaced everything on the low money end, and nothing worked. Through my journey, the one thing that jumped out at me, more than anything else, was that people were spending hundreds of dollars on their mechanic "fixing" their ac, only to find out two weeks later, that the problem still wasn't solved. Once again, shelling out hundreds more, and still problem not solved. Over and over, the same story kept playing. Something just didn't seem right about it. And how much can you justify putting into a 1992 car? I drive the car in the fall, winter, and spring. That's how I solved the problem.
Sun load sensor center of dash,some models behind glove box. 2013 doesnt have one. Hope that helps.
I have a 2006 Nissan sentra and when i put on my a/c my car goes real slow and cuts off and when I turn the a/c off my car starts again. Can someone tell me what the problems is. opelousasred01@yahoo.com
2014 a.c. works for a while than blow hot heat.Than turn it off an cool air again what the problem 2014 Nissan sentra
2013 nissan sentra a/c system: system will blow cold air when first starting car after sitting over night, then let vehicle get hot and a/c system will not work at all. put new compressor, condenser, high pressure switch. checked ipdm all working. checked sensors. can not find a problem. please help!
Guru7tcbm have you found out what was the issue with your ac i have the same yr sentra and its doing same thing..
Sorry to say, no. But of all the suggestions I received, I would say that replacing the Compressor/Clutch sounded like a good bet. I always kept weighing the cost of doing the work, against the year of the car, and learned to live with driving it anytime its not summer. Yes, I still drive it fall, winter and spring, and enjoy the 38 mpg, as opposed to my Pathfinder for summer driving with ac, but 18 mpg. Good luck, and if you do get it fixed, please let me know.
Cambien el compressor del aire acondiconado en un nissan sentra 2015 y enfria bien pero solo por las dos rejillas derechas en la cabina, las rejillas de la izquierda no enfiran bien solo cuando cierro las rejilas de la derecha, QUE PODRIA SER ESTO?
