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Sedans Toyota Camry Older Camry Maintenance and Repair
558 messages, Last post on Nov 20, 2009 at 11:36 AM
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Replying to: heisman98 (Jun 23, 2009 9:36 am) It should be cycling on and off.
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Replying to: kiawah (Jun 23, 2009 10:12 am)
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Replying to: heisman98 (Jun 23, 2009 10:20 am)
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Replying to: kiawah (Jun 23, 2009 10:24 am)
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Replying to: heisman98 (Jun 23, 2009 10:28 am) Things we know/suspect at this point.... - Your system is cycling at 2K, which tells me that the compressor is able to pull down a vacuum low enough that it turns the compressor off (so low pressure switch is working, compressor is working, compressor relay is working), and it also tells me that the freon level is not overcharged. You also indicate it's cold when running, so freon level seems like it's not to much, and not too little, so that's goodness. - The fans are turning on, so that tells me the temp switch appears to be working, the relays and fans themselves are working. - You indicated that when idling and the compressor kicks in, the idle speed increases, so we know the idle up VSV is working and EFI main relay are working. There's a couple things left which would be hard to figure out are working or not via the internet. There is a revolution detecting sensor on the compressor, which is used to verify that the compressor is turning and how fast it is turning (so it doesn't overspin). This sensor might be bad, or the wiring to the sensor is bad. There is also an A/C amplifier used for control, and the ECM computer. The symptom that you mention that when you have this problem, you turn the engine off, and then back on and it works correctly, points me to an electronic control issue, which may be intermittent. Some error condition is getting set after a while of running, which turns on the error light and turns the system off. You turn off the vehicle, error condition is reset, and doesn't immediately return. Other than the compressor sensor, I think you're going to need to get this to the dealer to trouble shoot further. Having a dependable failure is most helpful for the dealer to actually see the failing condition.
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Replying to: kiawah (Jun 23, 2009 10:56 am) I just have not had much luck at dealerships and sometimes they are not trust worthy. It could be something as simplistic as a sensor and they might want to charge me to redo the entire system. Thanks again for your help.
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Replying to: heisman98 (Jun 23, 2009 11:08 am) You'd probably be hit or miss at a general A/C shop as to whether they know the Camry specifics. Good luck.
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Replying to: kiawah (Jun 23, 2009 11:25 am) I just purchased a 2006 Camry LE and came from a 200 Olds Intrigue. One of the issues that many Intrigue owners complained about was the A/C cycling on and off. it was caused by a bad control unit. replacing the unit fixed the problem. Since all else seems to be working with regarding to the AC system, maybe the control unit itself is the problem. |
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I have a 96 Camry with 167K miles. After driving home from work, I heard the coolant was boiling in the radiator and saw the reservoir was full. There's overflow and some coolant was on the driveway, but the temp gauge was normal (not overheat). I turned off the car and let the engine cool down. The coolant in the reservoir went back to the radiator. I opened and checked the radiator and it was full, but the coolant level in the reservoir was low. I took the car to the shop where I had the water pump replaced six months ago for repair (the warranty was 12 months). The mechanic drove 17 miles and told me there's no visual leak and the car was normal. The coolant in the radiator is boiling and filled up the reservoir which then causes an overflow when the engine is hot. Is this really normal? Kenny
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Replying to: kfrohlich (Jul 03, 2009 9:10 pm) I'd suspect your cooling fans first though. |
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