Prius (2004-09) :: Cooling Fan Runs High While A/C Turned On?
May 27, 2015
I had my AC charged and belt replaced after this all is done I noticed the cooling fan likes to run a bunch now - its 80's outside and the cooling fan runs all the time.
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The cooling fan runs on high as soon as the a/c is turned on, regardless of the engine temp. I have the sensor(6F9Z-19D594-AA) that mounts on top of the accumulator. If i replace the existing sensor, will the refrigerant leak out?
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I've noticed the last few days that my Prius seems to be dropping MPGs horridly (even worse than the typical winter drop). The engine will idle hard and loud when stopped sometimes or when braking even. I noticed this morning, when I am braking to a stop, the MPGs are registering at 75 or below and it's running when idling and it seems to be running the gas engine more. It will sometimes shut off at a stop light, but hardly at all the last few days regardless of if it's been running 5 minutes or over an hour.
I thought maybe it was because it's cold-- we've dipped to single digits, but have been above 30 or so the last week or two and has only happened in the past two or three days. It happens at start up and at the end of my hour long commute to work. I've turned off the defrost and heat and it still does this.
She's a 2005 and has just over 105,000 miles. I just had her oil changed, a fuel injection cleaning and spark plugs replaced two days ago and had the inverter serviced and recommended transmission work done at 100,000 miles. Her water pump was replaced in the last year with the recall. I just replaced the air filter. There are no warning lights, so I"m not sure if anything would show up with the codes. I'm worried because it did not do this previously, and started to as soon as I got the car back from the injector cleanings and plug work...
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The past week I have noticed my battery cooling fan running constantly on all highway trips - 20 mile one-way trips going 65-70MPH.
The performance of the battery doesn't seem be degraded, but it seems like the battery is hopping more between charging cycle or whatever you would call it , where you watch the instantaneous MPG on the highway drop down for 10 seconds to 40-50, then back up to 60-70.
The car is a 2011 Prius III. It did not run like this earlier in the summer in the same weather conditions, I would hear the fan maybe once every few weeks in hot 90 degree weather. Now I hear it constantly. This is my first summer owning the Prius so this may be normal, but I wanted to double check with you all if this is a sign of premature traction battery death or something.
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Lately when I turn the AC on my battery runs all the way down to two purple bars. The temp here is hot and it happens when I'm traveling at low speeds. The battery finally gets back up once I drive faster.
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2003 camry 2.4 ... This is what is happening, cooling fans will not come on except when the AC is turned on and they will stop working when the AC is turned off, otherwise the car will over heat.
This is what I have done...Replaced the fans (because the radiator fan was bad, after hooking them up directly to the battery). I checked all the grounds, including the one under the intake, checked the fuses, checked relays using 12vots to the relay and used a ohm meter to see if it made contact when activated, on the three fan relays. Replaced and tested the new radiator sensor using a pot of water on the cooking stove with a cooking temperature gauge and ohm meter. It tested ok.
Unplug the radiator sensor while the car is running, the fans will come on, but go off as soon as it is plug back in, even when the motor is over heating. Also replaced the thermostat.
What can I do next, before I burn the motor up trying to fix it? Motor just started running rough. Just now pulled up a code of the number three cylinder miss firing
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I always take care of my car oil changes on time. And in the last week my check engine light turned on for a few hours then turned off. And today it turned on again. I kinda regret getting rid of my scan gauge now.
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I have a 98 Grand am with the 2.5 and recently noticed first that the a/c compressor wasn't coming on. It had freon added recently and did okay for a few days,then no compressor coming on again. (It still has freon) Then I noticed that the engine cooling fan was running as long as the engine is running on cold or hot engine with heat controls off (I know the compressor runs when on on defrost position as well as a/c). I thought the 2 problems may be related? I found 5 relays at R/F strut tower and the 3rd relay cut off the fan,so I swapped some of the relays, but made no difference.The fan only quits when I turn the engine off, and I can't get the a/c compressor to come. I don't if I have 2 seperate problems or not. Could it be the PCM?
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My 2000 Windstar cooling fan on the passenger side is running all the time when I am driving, even in freezing temperature. My gas mileage goes from 18 to 13 now.
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i have a Echo 2005,140 000 km,AC.Changed antifreeze with a proper mixture(bought from Toyota). Changed the thermostat(from Toyota) as well and flushed the radiator with water at the mechanics garage.The water was going out from the bottom hose on a steady flow. Yesterday drove my daughter back from school, distance around 10 km(5-6 miles around),ambient temp.was about 15 degrees Celsius(around 59F), 3 traffic lights, 4 stops at the last traffic light the fan turned on and worked for 5 sec. I can`t imagine what will happen in the summer when its 40 C(around 104 F). No AC on, no defrost on, water pump its not leaking and its not noisy. I used to have 2000 Echo did pizza deliveries, i ve heard the fan only in very hot weather ,never in such conditions. Same with my Corolla, never heard the fan in such conditions. Actually at the last traffic light the only car with a working fan was mine.
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Anytime I turn the headlights on, the high beams go on too; I cannot switch off the high beams unless I turn off the headlights entirely (I have been driving with the low beams on during the day for the 5 years I have had the car)
I can find no reason for this; I'm inspecting the fuses (with little expectation). The only thing I can think of is the control switch or wiring. I have standard headlamps, not hid.
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My prius 2004 AC not cool what really problem come from ? I didn't do anything with it....
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I have 05 prius and the cooling fans wont kick on as well as the ac wont work. I have had the cooling fan motors checked they are good. I have changed the 2 cooling fans relays and the cooling fans still wont kick on.
When I bought the car the check engine light was on so I had it scanned and it threw the code P1121 coolant valve control. so I went and bought this part since I heard it was a common problem but haven't got it put on yet. Could this cause the cooling fans to not kick on and ac not to work or is it something else?
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My inverter over heated. Looked at reservoir for motion of water saw none. Took car to toyota for pump recall. When I got it back I heard the pump. Never heard it before. I don't think it ever worked. & water is flowing in reservor now. Now I am thinking about the HV bat. fan because I never never ever heard it working. When does it come on and how could I test it?
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OK, so I have the 100K extended warranty. What can I expect soon after 99K to maybe go out?
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I bought my 2007 with almost 100K miles on it back in November. It's been a great car, and I had various maintenance done to it and did some myself. Looks like there's a problem with the A/C -- it's just not cooling the air. Yesterday was the first day in the sixties here in NJ, and the A/C just wasn't what an A/C is supposed to do.
The car was maintained at a dealership exclusively. Here's the entry about the A/C:
05/29/2012 93,478 AIR COND. INSPECT
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I have an 04 F250 6.0L and for the last month or so when I turn on my AC it makes a high screetching noise but only last for a little bit. Had a friend that works on cars on the side take a look at it one day and he said it was the AC cutch trying to engage. Does this sound like what it could be? Also if it is can it be changed out without having to remove the compressor? What all is involved in changing it out?
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Went outside to start my '99 V6 and nothing! No interior lights, no door chime, no annoying ding ding with the key in the ignition. The car ran great yesterday but I noticed it sounded like the cooling fan was running long after the car was turned off in my garage.
I tried using a car starter/charger and charged it up for 3 hours - was reading a positive charge on the gauge- but it won't start. When I get ready to crank the car with the charger attached to it, the fan noise kicks in again but it isn't coming from the radiator fan- it sounds like it is coming from under the air intake for the air filter.
When I attempt to start the car,I can best describe the sound as a machine gun like cranking noise that lasts as long as I turn the key. I am hoping it isn't the starter. The battery is less than 2 years old with about 10k miles on it.
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I have an 05 Prius with 53k miles and the ac just recently stopped working. The blower fan still comes on, but neither the compressor nor condenser cooling fan will come on. I've checked the fuses and relays, and they check out ok. I'm hoping there may be one I missed? It just stopped working with no warning signs. What could be causing this? If the compressor was bad, the condenser fan would still work, right? I'm fearing it's the ac inverter. Do the symptoms match?
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Just read a post about this, I would like to check mine and see if it needs cleaning.
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The SAI pump (part number 021 959 253 B) on my 97 Passat continues to run intermittently after the car is turned off, eventually draining the battery. How do I fix?
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