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 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 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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If the clutch comes on,but turns off to soon,you probably have a low charge.There are many do-it-yourself charging kits at part stores to charge it up.It is also possible the system is overcharged,but this would only be the case if there was recent service done.

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1 Answer

Toyota Corolla 1995. Quality of air conditioner reduced when stopped (traffic light) or moving at slow speed (condenced city traffic) No problem on the highway. Checked freon gas and fan. Understand that...

Normal, the ac heat exchanger condenser need air moving across the fins to remove the heat. While moving in town the condenser isn't remove the meat that is building up the it's aluminum fins. Even though the vehicle uses an electric fan. The fan is used to cool the engine temperature. If you Toyota is equip-ed with automatic transmission. The electric fan will need to pull enough air to cool the engine temperature, automatic transmission fluid, air conditioner condenser, and maybe power steering condenser to cool the power steering fluid. Later model of vehicles/trucks are using different refrigerants instead R134A in which you Toyota uses.

The simples way to explain is the ac remove heat from inside your Toyota and this heat is removed by the refrigerants inside your ac in the car. To cool the refrigerant this coolant is removed to the heat exchanger condenser located in front of the engine radiator. So, while moving at 60mph there is enough air flow through the radiator, ac head condenser, and other aluminum heat exchangers. GB...stewbison

Sep 12, 2011 | 1995 Toyota Corolla

1 Answer

My AC is not blowing cool air. Compressor clutch is not getting engaged. AC button is showing green light indicator though. I am suspecting clutch relay problem. where is air conditioning clutch relay in...

First of all check the freon pressure, if the pressure is low the compressor clutch will not turn on. The pressure should be between 30-40 PSI.

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Not cooling as before

If you are talking about the AC, then I suggest cleaning or replacing the cabin air filter located behind the glove box. See your owners manual for details. If problem persists replace the AC clutch relay ( $11), located in the under hood fuse box towards the front of the fuse box.

Aug 03, 2010 | 2003 Toyota Corolla

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I am guessing you need to charge your ac its empty

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BBB Industries should have the TSBs and wiring diagrams for this as well .

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if the compressor was locked up the drive belt would come of when u engage the AC compressor, your problem is most likely a low charge

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2001 toyota corolla blows 7.25 fuse when turn on ac

I would guess that your AC compresser clutch is shorted out. Try this: Look down into the area where the compresser is, and unplug the wire going to it. Replace the fuse, and try the switch. If the fuse does not blow, you need an AC clutch assembly. Let me know what you find out.
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1 Answer

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.

Sep 28, 2008 | 2003 Toyota Corolla

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