- #1152 of 1193
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Re: air vent direction light always on - why? [wcooper]
by kathyc1
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Jul 15, 2009 (8:46 am)
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Replying to: wcooper (Jul 14, 2009 7:12 pm)
Yes, that's normal. I have 07 EX coupe and the only time one is not on is when the car is turned completely off. This just directs the air coming in to whatever location you want...lower, upper, upper/lower. You turn the air off coming into the car by pushing the button usually beside the A/C button (such as when you notice a dead skunk in the road before you run over it) and it will show a yellow light instead of the usual green.
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- #1153 of 1193
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Re: air vent direction light always on - why? [kathyc1]
by wcooper
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Jul 15, 2009 (12:50 pm)
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Replying to: kathyc1 (Jul 15, 2009 8:46 am)
Thanks Kathy -
In other cars I've had, the light usually goes off when the fan is off. I guess I'll have to get used to it. People in my car for the first time always say "why is this light on?". At least I know what to do if I see a dead skunk in the road! 
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- #1154 of 1193
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Engine Overheating
by paez
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Jul 16, 2009 (10:46 am)
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I have an 06' Honda Civic with 48,000 miles. I've had problems in the past with other things on it, but this one is hard to figure out. Recently, when driving, the air from the vents was coming out warm when I would accelerate and cool again when I'd take my foot of the gas. I noticed my temperature gauge was getting close to the Hot Mark so I took it in to the dealership. They said my radiator was bone dry so they bled it and refilled. 3 weeks later the same thing happens. Never was there any evidence of leaking coolant. Can anyone tell me where the coolant is going? The folks at the dealership are mystified-but they said they may get a better idea by removing the head gasket ($1,500 just for a look)
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- #1155 of 1193
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Re: Engine Overheating [paez]
by knfield
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Jul 16, 2009 (11:16 am)
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Replying to: paez (Jul 16, 2009 10:46 am)
I have been experiencing a similar situation. I have a '07 Civic LX coupe with 30,000 miles. In February of this year, my AC was blowing hot air. I had no refrigerant at all, and the technicians were unable to identify a leak using the UV tests. They refilled the refrigerant, and sent me on my way; however, my AC developed a chemical-burning type smell which was increasingly intensified as my RPMs went up. Honda Techs were unable to identify the source of the smell (and then started to say they didn't smell it at all...). I got used to the smell, and everything was (relatively) fine, and then a few days ago, my AC started to blow hot air again. I went back to the dealership and my car, once again, had no refrigerant. The UV test didn't show any indication of a leak, and so since this happened before, this time the techs are dismanteling my dash board to check my evaporator, and a few other parts to see if they are leaking. They say that they will be replacing, at a minimum, the evaporator. They have had my car for two days now, so hopefully things are going well.
I am not sure if our problems are the same, because mine doesn't invlove the engine temperature; however, it may be worth looking into.
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- #1156 of 1193
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Re: Engine Overheating [paez]
by targettuning
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Jul 17, 2009 (9:50 am)
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Replying to: paez (Jul 16, 2009 10:46 am)
Coolant leaks can be subtle...not necessarily a gusher from a ruptured hose. If it took 3 weeks to go from full to dry again it could be an overflow bottle (which is plastic) with a tight crack and the coolant is disappearing under the car as you drive and dries from evaporation when you park. Does the bottom of the car show ANY evidence of fluid at all? Check toward the rear of the car because it can blow rearward with the airflow. The other (worse) option is a going...going...gone headgasket but to burn off that much coolant you should notice symptoms such as a white vapor exiting the exhaust pipe at idle (also have someone follow you as you drive to check this) and a sweetish smell from the exhaust. I have heard of other 06-07 Civics (on this site somewhere) that developed a cracked engine block. I imagine one could not drive too far with a cracked block though. Just a few ideas.
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- #1157 of 1193
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Re: Engine Overheating [targettuning]
by knfield
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Jul 17, 2009 (12:26 pm)
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Replying to: targettuning (Jul 17, 2009 9:50 am)
Thanks for the information. I got my car back today, and they ended up replacing my evaporator and ex valve. They said that they were able to confirm that this was both the source of the leak as well as the source of the smell.
I have never noticed any leaks on the pavement, and usually do try to pay close attention to that. I will have someone follow me to see about the white vapor.
Hopefully it is not the head gasket...that would be horrible! I will keep it in mind if the problem comes back. Thanks for your help!
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- #1158 of 1193
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Re: Engine Overheating [targettuning]
by paez
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Jul 17, 2009 (12:40 pm)
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Replying to: targettuning (Jul 17, 2009 9:50 am)
You were right on the money, targettuning! It was the "worse" option you mentioned. Took it in this morning, and sure enough the oil looked like the bottom of a glass of chocolate milk. Coolant is going directly into the engine through a crack and evaporating through the exhaust. Although there was no white smoke or funny odor, the symptoms were the air condition blowing hot air on acceleration and the sudden overheating due to a dry radiator.
Anybody reading these posts listen to this guy....he diagnosed my car without even seeing it!
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- #1160 of 1193
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Honda Mile Makers
by civicdriver1
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Jul 19, 2009 (5:32 pm)
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Go to Honda Mile Makers to read honda owner stories with 100,000 miles and above. There is a 2006 4door Honda Civic LX with 253,629 miles as of Sept. 14 2008. 
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- #1161 of 1193
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Re: Engine Overheating [knfield]
by targettuning
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Jul 20, 2009 (7:37 am)
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Replying to: knfield (Jul 16, 2009 11:16 am)
We are talking about two completely different types of leaks. Yours seems to be a leak of the AC refrigerant but I was replying to a poster who has an engine coolant (antifreeze) leak so I don't think my comments and symptoms to look for applies. UNLESS you are also loosing engine coolant (antifreeze) too. By the way there have been complaints here about road debris puncturing AC condenser (in front of the radiator) and the fact Honda refuses to fix it under warranty. Most who experienced this feel it is too exposed to debris thrown up by vehicles in front.
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