2002 Elantra GLS - AC not working, fan is blowing normal air. Indicator does show as AC switched-on.

dhwanit
15

Asked by dhwanit Apr 25, 2011 at 01:01 PM about the 2002 Hyundai Elantra GLS

Question type: Maintenance & Repair

Please advice possible issue, how to inspect and estimated cost to repair.

19 Answers

buccaneerz89
1,005

Might just need to recharge your system with R134a refrigerient, and it super cheap to fix.

7 out of 7 people think this is helpful.
dhwanit
15

thank you very much for your advice. Is there a video on youtube i can watch specific to Elantra. I am little confused with high and low point. Also which R134a would be best to use? Appreciate your help.

1 out of 1 people think this is helpful.
Jon Romero
1,575

When the HVAC control head shows the AC engaged, visually inspect the AC compressor and see if the clutch is engaging. If the clutch engages and then disengages right away then that is usually a surefire sign that the system refrigerant charge is low. If it does not engage at all than there can be a multitude of different things causing the AC Compressor not to actuate; i.e. Compressor clutch relay, HVAC control head, faulty clutch, wiring, HVAC high side pressure sensor, etc.

2 out of 2 people think this is helpful.
buccaneerz89
1,005

Its pretty easy to do. They sell kits at walmart or any autoparts store. All you do is screw the can on and attact to low side. It wont connect to highside so dont worry if one side doesnt fit. Squeeze the handle on and of untill it reachs around 40psi while the car is runnnig. Best would to use a one that has some pag oil in it, stay away for the ones that have mineral oil as they are for R 12 systems. If its not blowing cold at all you might need about 2-3 cans to recharge it fully.

3 out of 3 people think this is helpful.
Jon Romero
1,575

Not only is that ignorant but dangerous to charge your own AC system to a guesstimated amount without being able to monitor that you are filling it to the proper capacity. Overfilling your system can cause catastrophic failure of components due to extreme system pressures. Also using too much PAG oil can hydro-lock your AC compressor. You are more than welcome to "keep filling it until it blows cold, if not you MIGHT need to add 2-3 more cans."

3 out of 3 people think this is helpful.
buccaneerz89
1,005

lol..... Thats why i told her to stop when its 40psi at idle. 40psi is a standard for correct filling. and for the pag oil, the amount in the one or two cans will be fine.

1 out of 1 people think this is helpful.
Jon Romero
1,575

There is no such magical thing as a"standard" fill amount, expecially between different vehicle manufacturers. Not all vehicles run 40 psi low side at idle running. How many cans would it take to fill a vehicle that has a front and rear zone AC system? If i had to throw a number out there, id say most dual systems take approx. 2.5 lbs of refrigerant. Wouldnt it make more sense to spend the money and let a trained professional work on your vehicle then go to walmart and invest in R-134a stock and buy out there shelves?

buccaneerz89
1,005

Your realy making this funny. Yes it is a standard you idiot. 40 psi is around the correct low side pressure reading at idle. Even if not all cars have 40psi there around that psi unless there was some other problems with the system. And the amount i thought of how many cans was about what car she had. I didnt tell her to keep throw stuff cans at it. I am a professonal, i have my epa 609 license and i know what im talking about. Stop be a prick.

1 out of 1 people think this is helpful.
dhwanit
15

Thank you very much for sharing your knowledge. I have one doubt before giving this a try. Is it necessary to vaccum the AC before refilling / recharging it?

buccaneerz89
1,005

Your welcome, It wouldnt hurt to.(If it was my car yes) That way your sure that theres not to much air/moisture in the system plus, That there isnt any leaks. Also when filling make sure you have the can upside down when filling. This insures that only the liquid gets into the system. Also have your A/C on max with the car running.

3 out of 3 people think this is helpful.
Jon Romero
1,575

Your being a "professional", with your EPA HVAC 609 Certification, should know that only trained professionals should perform repairs on HVAC systems. Furthermore, why use anonymity unless your "professionalism" outshines your intellect? I must admit, i was hoping you'd show your name so i know which posts to stay away from as not to emplode my head from your professional advise.

1 out of 1 people think this is helpful.
dhwanit
15

Ok - I found a local mechanic and he test the pressure on low and high points and refilled the refigerant. AC chilled for a day and next day back to same old no cool air. It looks like my car ac has some major leak. I can ask for an estimate for repairing the leaks, but wondering if it is really worth? And how much should I be expect to pay? Please advice.

buccaneerz89
1,005

Sorry to here that, it depends on how dependent you are on your ac. I myself can dea lwith out to save a little gas. Depending on whats wrong it could get expensive. If i were you i would find out where its leaking first. Dont let them repair,after they tell you where its leaking post here and ill tell you what you how much it would cost to get it repaired. I would hate for you to get conned into paying some outragous price. If you want you could check the two air ports and check if theres any residu there. If so it will be a pretty cheap fix.

2 out of 2 people think this is helpful.
dhwanit
15

Ok - the mechanic analyzed that the AC condenser is leaking due to which there is no cooling at all. Total cost is 300. Cost of condenser is 170 and rest is labour charges. check autozone, and cost of part is ok, not sure about labour charges though. Also do you think that the analysis is correct. Please advice.

buccaneerz89
1,005

300 is a fair price, If that includes refilling it. It would be hard to say if that was the problem unless you have some pictures, Or you could check your self by spraying soapy water around the joints, and the condensor and look for air bubbling out.

1 out of 1 people think this is helpful.
Kikilee
30

I was googling to find out where the "low pressure port" is located in my ealantra (just to make my job a little quicker) before I get to work, when I came along this post. It didn't relate to my specific inquiry, but I couldn't stop reading! Lol Gotta say, Buccaneerz, I thought you should hear at least one person thank you for your confidence in us mere 'do it yourselfers' and the sound advice you gave to help us out!! If I had the money to take it to a shop where I'm 99% certain I'd get screwed one way or the other, I wouldn't be googling any of this in the first place. I think you gave great information and appreciate that you took the time to share your knowledge!

3 out of 3 people think this is helpful.
dealershipsux
0

I have a 2002 Hyundai Elantra with outside air temperature coming into the car with the AC on full blast. I had just filled it with a "DIY" canister. Still the same even after driving around. MH said two things that I am going to try immediately. Can should be upside down when filling (it doesn't tell you this on the can) and I am going to put a full second charge into it if the first one does not take. Thank you MH, dealerships, especially American Auto dealers are the biggest fucking crooks out there. There should be more guys like MH. Thx!

dealershipsux
0

Thank You MH! I just finished your recommendations and at an idle it's now blowing cold air. You're a Rock Star!

kyot
0

Thanks Buccaneerz! Gonna try it too!

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