Question about 2005 Toyota Corolla

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03 Toyota Corolla. AC clutch doesnt stay on long enough to cool car. Intermittent, off and on. Originally the unit was working at all. Switched relays (horn and ac clutch relay) unit began working. Replaced ac clutch relay and unit continued to work. Checked the charge on the system and gauge was in the red and stated possible mechanical problem. Took it to a garage and was told it was actually reading low. Vacuumed system, recharged system....now all the problems listed above. AC clutch makes noise and will not stay running. Does not appear to be leaking but Im wondering what to replace or check next?

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  • jtwolff69 Jul 24, 2009

    Is it possible to change the clutch while the compressor is still in the car? I have done a lot of work on a variety of autos through the years but have never worked on a compressor clutch. Like everyone these days Im trying to see what the least expensive option is. And of course my wife and I are facing an 800 mile drive for vacation this week. Thanks for your solution by the way and any other incite will be definitely appreciated. Joe P

  • jtwolff69 Jul 24, 2009

    Thanks for the immediate response. Unfortunately Im at work and wont be able to try what you have suggested until later this evening.

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It sounds like a possible loose connection in circuitry. Possible fix would be to eliminate feed circuit by jumping 12 volts straight to the clutch wire.you must be quite careful while doing this, as wire is not fused and can cause real problems if you ground it inadvertently. Monitor clutch (with engine running) and watch for intermittent problem. If clutch works normally, trace circuit back and verify connections. If problem still exists, clutch coil is bad.

Posted on Jul 24, 2009

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A/c intermintantly cools


Try replacing the AC magnet Clutch relay, Toyota part number 90987-02028. If the relay in your car is labeled 90987-02022, it is probably bad.

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