A/C charge

Tiny
CHAVACAMARENA
  • MEMBER
  • 2004 HONDA CIVIC
  • 1.7L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
I am trying to refill the ac system with r134a refigerant, but the problem is that I cannot get the can hooked to the low-side pressure port. I tried pushing it real hard, but the hook does not go all the way down. I think that the valve might be stuck or something like that. I cannot even get to read the current pressure of the system. Should I try to tap on the valve, so that it might get unstuck? What can I do? Please help, Thanks
Monday, February 17th, 2014 AT 4:59 PM

6 Replies

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
You may need to back off the tension adjustment on the fitting..

Heres a guide on how to recharge you system, it will help you get this done correctly

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system
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Saturday, February 22nd, 2014 AT 5:18 AM
Tiny
2K2CIVICOWNER
  • MEMBER
  • 1 POST
  • 2002 HONDA CIVIC
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 121,000 MILES
Dear 2CarPros,
I am having some sort of electrical issue with my 2003 Honda Civic EX Coupe. Today, while idling, the ABS light turned on. Simultaneously, my headlights and other lighting dimmed, the radio reset, and there was some sort of dull "popping" through the car speakers. The A/C was on max cool also. However, when I turned the A/C off, everything went back to normal, including the ABS light turning off. Realizing this was some sort of electrical issue, I tested other loads on the system. I turned my headlights off and turned on the A/C again. Nothing happened until I rolled down the driver's side window. Again, the condition reappeared in the exact same manner. I am sure that other load combinations would produce the same effect, but all have one thing in common, the A/C. Now, some recent background, which may or may not be relevant. About two weeks ago, I had the A/C recharged by a nation-wide, ASE certified total care care establishment. No problems were reported to me concerning the A/C system, other than the low refrigerant level. Also, when starting the car, over the last couple of days, the cranking has been very weak, as if the battery is dying. This is the second battery in the vehicle, and is relatively new. I have tested the battery, under no load, and it registers 12+ volts. I am no "expert" in car repair, but I am very handy. I am sure it is not the underlying issue. I feel something deeper is at fault for the electrical problems, but I am not sure where to start with a diagnosis. Like many these days, I do not have the money to make a number of trips to the repair shop, ending up with several, unnecessary repairs until finally, the root cause is discovered and remedied. I would much rather have a "ballpark" idea about the issue before proceeding with repairs. Any advice you can provide is very much appreciated!
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Tuesday, July 7th, 2020 AT 1:18 PM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,870 POSTS
Hi 2k2CivicOwner. Welcome to the forum. This sounds typical of a generator problem. Use your voltmeter to measure battery voltage again but this time with the engine running. You must find between 13.75 and 14.75 volts. If it is low, the battery will never fully recharge. If the voltage is correct or even a little high, have it checked for its maximum current capability. This is called a load test. One defective diode out of the six of them will reduce the maximum capacity to around one third of its rated design capacity. That means a 90 amp generator will only produce around 30 amps which isn't enough to keep up with lights, heater / ac fan, and the ac compressor clutch. The voltage regulator will see the momentary drop in output voltage and respond by bumping up charging voltage which is why you might see a little higher than normal voltage at the battery.

Another problem that only happens on Hondas is if you added anything electrical such as an amp or cell phone charger. Their computerized systems poll all factory-installed electrical devices to see which ones are turned on, then the computer directs the generator to deliver just that much current and no more regardless of what system voltage is. Added on items aren't included in that poll so their use discharges the battery over time. I'm not sure which model year they started doing that silliness but you would have noticed that long before now. The exception would be if you recently added something electrical to your car.

Caradiodoc
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Tuesday, July 7th, 2020 AT 1:18 PM (Merged)
Tiny
VIVIAN82A
  • MEMBER
  • 2 POSTS
  • 2001 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
  • 90,000 MILES
I bought my 1.6 (2001)honda civic last year. When I bought, the ac gas was empty, then I regas my ac with a dealer nearby. On that time it works well. After one hour I tried again the ac, there is no gas. I return back to the dealer he recharge again and he told it may have some problem, ie leaking sound from the front (radiator or somewhere). He told me it might happen due to thrown chips due to the travel. There is no other bad sounds from the ac. Can u assume that the problem is from the radiator or the condensor, if it is how much roughly to repair cost. How to rectify this problem by replacing or repairing. Please give my an advise as soon.
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Tuesday, July 7th, 2020 AT 1:18 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi vivian82a,

Sorry I am unable to provide any costing.

If the gas disappears after 1 hour, the leak is VERY bad and the dealer should have been able to pinpoint the area, even a blind man would be able to see it. He should not have recharged the gas a second time and instead proceed with checking for leakages and provide an estimate.

This guy is hopeless to get your repair done, go to another dealer to have the system checked. The radiator has nothing to do with the A/C gas, it is for the engine cooling system.

If it is from the front part, the condenser or its joints are likely to be the cause. Condensers are non repairable items.
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Tuesday, July 7th, 2020 AT 1:18 PM (Merged)
Tiny
VIVIAN82A
  • MEMBER
  • 2 POSTS
Hai friend,

thanks very much for your advise. I thought the radiator needs to be changed for curing and it comes around  100 and is feasible. As per your reply, if its condenser, I am ttotaly desperite, costs should be more than  300. Anyway try to find one ac mechanic for diagnosing. Thanks once again

vivian
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Tuesday, July 7th, 2020 AT 1:18 PM (Merged)

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