Question about 2004 Honda Accord

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2004 Honda Accord 48,000 miles - AC system air flow is great though it stopped blowing cold air a couple of days ago - was told that the compressor is not engaging Was told it could be an electromagnetic something and/or the clutch assembly - also could replace the compressor - cost could run $600 Any feedback would be appreciated!

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  • toheidi Sep 03, 2010

    I was told that fan blower coming on , there is a signal to the compressor, signal going in though the electromagnet is not pulling the clutch together......why would this occur? What needs to be repaired?

  • toheidi Sep 03, 2010

    So then what would need to be repaired?

  • toheidi Sep 04, 2010

    Thank you for the quick response and answering all my questions!

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  • Master
  • 580 Answers

Did they check the charge on the system? If not, it just may need a top up of freon. The compressor will not come on if the freon is low. I'd check this out first before you change the compressor. Good luck!

Posted on Sep 04, 2010

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  • Honda Master
  • 17,970 Answers

Did you use a single gauge on the low side to check the pressure? This only tells you if there's enough refrigerant (although under certain conditions, it can read inaccurately, like with a bad expansion valve). You need to install a gauge in each line accurately diagnose a problem.

For example, if you have a blockage somewhere on the discharge (high) side, the suction (low) side will read correctly, but the high side will be extremely high. When that happens, the pressure switch opens and cuts the compressor off till the pressure drops to a safe level. Then the compressor will come back on and the same things happens over and over (NOTE: you'd never find this out with just one gauge).

About pressure specs, this is so hard to specify because it depends on various conditions such as ambient temp, humidity, state of charge, etc. A ballpark figure could be 40 psi on the low side, and 210 psi on the high side.

If you have an automatic climate control system, it should be using a relay/transistor combo, but manual systems would have a resistor in place of the transistor and lack a high motor relay. Be specific, even though it sounds like you will get to the bottom of this before we do.

Keep in mind, regardless of which system you have, the failure of the motor itself tends to be inconsistent, see here. I was always able to get the motor to run if the current was high enough, but when the power was limited to 30A, it would come on sometimes and sometimes would stay off.

Hope helps.

Posted on Sep 03, 2010

  • ZJ Limited
    ZJ Limited Sep 03, 2010

    Is the clutch not working or not getting power? It's easy to check the
    clutch operation yourself. Just hook a 12V source (battery) to the 2
    pins in the plug socket. You should hear a the clang of the
    electromagnetic pulling in the clutch plate. If you hear that noise
    then you know your problem is in the climate control not sending a
    signal, not the clutch.


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https://www.hexautoparts.com/a-c-compressor-clutch-fits-acura-tl-v6-2004-2008-honda-accord-v6-2003-2007.html

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