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Old 06-22-2009, 07:39 AM   #1
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Compressor i think?!?!

When i turn on my interior cooler/heater, even when the AC button is not on, i believe the compressor is kicking on and off every 5-10 seconds. There is the click and then there is this noise for about 3 seconds. This then repeats.

When i turn the fan to off the noise will stop.
I have noticing that when im traveling at very low speeds say 5-10 mph when the fan is on it will actually make the car accelerate a little.

Doesn't sound good does it?

What good could it be, and how much does that cost to fix?

its a 2004.


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Old 06-22-2009, 09:34 AM   #2
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1. The compressor will kick on if you have selected defrost or defrost/floor, even if the A/C button is off.

2. When you turn the fan off, the compressor will stay off.

3. When you are traveling at low speeds, and you feel the car 'accelerate' a little- you're just feeling the A/C compressor drag the motor down, it doesn't take much to feel this when we drive these under powered four cylinder cars! (Just by running A/C can decrease your mileage by up to 10 mpg in some cars simply because the pump runs off the already overworked engine!)

4. The most likely reason your pump is cycling is because it is low on freon. You can either take it to a shop and they can fill it, or you can go to AutoZone or similar place and purchase the refil kit there- the one with the gauge and hose attatched to the bottle. It's not very difficult to do yourself, but if you have problems you can either ask here or have one of the guys at the store show you. (Just make sure you pick someone who at least LOOKS like they know what they are talking about!) There are instructions on the can, though.

-Edit- Sorry forgot to mention, the refil kit should cost you under $20-30.
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Old 06-22-2009, 11:23 AM   #3
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ok, i'll give that a shot.

Funny you should mention this the AC is not really that cold at all, maybe a little but on a hot day i dont even really notice it.

Isnt freon though used for the AC. I dont see how adding Freon will help my problem when im not using the AC.

To restate this is happening when i simply turn the interior fan on (with or without AC), do you still stand by your original post?
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Old 06-22-2009, 12:44 PM   #4
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Quote:
Originally Posted by mattsthe12345678 View Post
ok, i'll give that a shot.

Funny you should mention this the AC is not really that cold at all, maybe a little but on a hot day i dont even really notice it.
This makes me think even more-so that you're low on freon.

Quote:
Isnt freon though used for the AC. I dont see how adding Freon will help my problem when im not using the AC.
Yes, it is used for the A/C. You might not have the A/C button pressed, but as I said if your selector knob is on either defrost mode, the A/C WILL be on, regardless. Conditioned air helps defrost better (it's drier) than non conditioned air.

Quote:
To restate this is happening when i simply turn the interior fan on (with or without AC), do you still stand by your original post?
Read above, and yes, I still stand by my first post. Definitely feel free to wait for others to chime in, though!
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Old 06-22-2009, 01:43 PM   #5
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Just to went to Advanced Auto.
My work buddy came along for the ride and helped me out.

We put pretty close to one full can of Freon in there (i bought a three pack though).

Now the compressor is on all the time, not turning off and on and i have nice cold air in my car.

Thanks so much for your help you rock!!!

...and thanks Dan for helping me gas her up.
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Old 06-22-2009, 02:05 PM   #6
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Glad I could help!
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