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Old 02-25-2007, 08:14 PM   #1
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Default AC Won't Take A Charge

my A/C hasn't worked since i bought my car used (97 accord ex) so i took it to a shop and they said the compressor wouldnt take a charge. i plan on doing the work myself but i could use some help as far as what to do....get a new/refurbished compressor and just put it in? any connections to check? is it to hard to DIY?
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Old 02-26-2007, 06:37 AM   #2
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Default Re: AC Won't Take A Charge (lax1089)

The diagnose of "compressor won't take a charge" is not anything I've ever heard before.
Are they saying the compressor shaft seal is leaking? The compressor is locked up?
Have you tried jumpering the pressure switch to see if the compressor runs and the fan turns on, when the A/C switch is on and engine running?
To properly recharge the system you'll need to be able to pull the system under 15 inches of vacum.
On top of adding freon, you should also add oil and I always recommend flourescent dye.
Post back or feel free to contact me if you need more help.
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Old 02-26-2007, 11:38 AM   #3
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Default Re: AC Won't Take A Charge (hondadude)

how does one jump the preasure switch?
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Old 02-26-2007, 01:17 PM   #4
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Default Re: AC Won't Take A Charge (lax1089)

Quote:
Originally Posted by lax1089
how does one jump the pressure switch?
Unplug it from the switch on the small line from the dryer, put a jumper between the two wire connectors. This is to fool the controls into thinking there is freon in the system. The radiator cooling fans should run and the electric clutch on the compressor should turn on and run the compressor.
When the compressor is running you can reach down to the back of it and make sure the pressure relief valve isn't blowing air out.

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Old 02-26-2007, 03:17 PM   #5
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Default Re: AC Won't Take A Charge (hondadude)

alright i guess ill give it a try...
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Old 02-26-2007, 03:34 PM   #6
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Default Re: AC Won't Take A Charge (lax1089)

1. Check presence of refrigerant charge. Press the low or high side schrader valve pins and see if some refrigerant leaks. Do not press too long. Wear some eye protection.
2. If there is no refrigerant, do not jump the pressure switches. System needs to be leak tested. You should have a vacuum pump, gauge manifold and electronic detector. These tools are expensive. Just take it to a A/C shop.
3. If there is refrigerant, turn on the engine and turn ON the A/C and see if the compressor clutch engages.
4. If clutch do not engage, system is low on charge. Then you can jump the pressure switches and test if it engages and if it will accept a charge. You will still need a gauge manifold to diagnose the compressor condition thru the low and high pressure readings.
Same low and high side pressure readings, compressor is dead and will not accept any charge.
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Old 04-07-2007, 09:56 AM   #7
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Default Re: AC Won't Take A Charge (AccordEX1991)

ok i did what hondadude said and jumped the ac preassure switch and both fans came on and the compressor belt started going when i turned on the car but still warm air. i tried to reach behind the compressor but i dont think i felt any air.....what other tests can i do to find the source of the problem?
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Old 04-07-2007, 01:26 PM   #8
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Default Re: AC Won't Take A Charge (lax1089)

get rid of that a/c crap and youll be much happier.
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Old 04-07-2007, 09:17 PM   #9
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Default Re: AC Won't Take A Charge (JakeIsCool)

hahahaha not in south florida. and not in the summer in south florida. i will be extremely miserable....even with the windows down.
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