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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / February 2005smoke coming out of a/c vent
1994 accord. I was driving about 55 MPH, with my A/C on, when I noticed that smoke was coming out of the center a/c vent. I shut the a/c off and the smoke stopped coming out. Anyone know what's going on here? I hope it's not poisoning. shc> 1994 accord. shc> shc> I was driving about 55 MPH, with my A/C on, when I noticed that shc> smoke was coming out of the center a/c vent. I shut the shc> a/c off and the smoke stopped coming out. shc> shc> Anyone know what's going on here? I hope it's not poisoning. shc> Are you sure, it was *smoke*? A leaking evaporator could produce a smoke-like cloud of freon. -Bela  SignatureI shook my family tree, and a bunch of NUTS fell out... if it's a leaking evaporator, should i take it to an ASE mechanic or a mechanic who specializes in auto air conditioning systems? > shc> 1994 accord. > shc> [quoted text clipped - 9 lines] > > -Bela You sure it wasn't just condensation? Under certain conditions, especially when the air is humid, you can see stuff coming out of the vent. > 1994 accord. > [quoted text clipped - 3 lines] > > Anyone know what's going on here? I hope it's not poisoning. Smoke? Are you sure its not just water vapor? Water vapor coming out of the vents briefly as the A/C comes on during very humid weather is fairly normal. A steady flow of visible water vapor for an extended period might mean a leaky heater core. Smoke? not much in there to cause true SMOKE except maybe a blower motor burning out. this was a steady continuing flow of visible vapor. It only went away after I had shut off the A/C. It only happens if I drive over 55. Is this considered an A/C problem? If so, I'll have to tell the mechanic to check my A/C. I'm not experiencing problems with the a/c refrigerant though, it still keeps me cool during a hot day. > this was a steady continuing flow of visible vapor. It only went away > after I had shut off the A/C. It only happens if I drive over 55. > > Is this considered an A/C problem? If so, I'll have to > tell the mechanic to check my A/C. I'm not experiencing problems with > the a/c refrigerant though, it still keeps me cool during a hot day. Possible blown heater core. > > this was a steady continuing flow of visible vapor. It only went away > > after I had shut off the A/C. It only happens if I drive over 55. [quoted text clipped - 4 lines] > > Possible blown heater core. It's water vapor from the evaporator... If it were a freon leak big enough to see, the A/C would stop working quicker than soon. If it were the heater core leaking, the inside of the car would reek of coolant, and the windows would be fogging like crazy every time the outside air temp dropped down a little... like every evening/night. My Accord does the water vapor thing, different lighting conditions can make it look dramatic sometimes. Erik so, did you get it fixed or did you leave it alone? I notice the vapor during the daytime, when the a/c is running and while i'm driving at or above 55 mph. You shouldn't have to tell your mechanic what to check, tell him the conditions you are having and let him determine what it is. > this was a steady continuing flow of visible vapor. It only went away > after I had shut off the A/C. It only happens if I drive over 55. > > Is this considered an A/C problem? If so, I'll have to > tell the mechanic to check my A/C. I'm not experiencing problems with > the a/c refrigerant though, it still keeps me cool during a hot day. suretrade001@hotmail.com writes in article <1107465696.371829.159600@g14g2000cwa.googlegroups.com> dated 3 Feb 2005 13:21:36 -0800: >this was a steady continuing flow of visible vapor. It only went away >after I had shut off the A/C. It only happens if I drive over 55. > >Is this considered an A/C problem? If so, I'll have to >tell the mechanic to check my A/C. I'm not experiencing problems with >the a/c refrigerant though, it still keeps me cool during a hot day. What does it smell like? Air -- it's just condensation from cold air mixing with warm, no prob. Antifreeze -- you have a broken heater core. Chlorine -- broken AC condenser. Ozone or something burning -- bad blower motor (?) -- spud_demon -at- thundermaker.net The above may not (yet) represent the opinions of my employer. > this was a steady continuing flow of visible vapor. It only went away > after I had shut off the A/C. It only happens if I drive over 55. > > Is this considered an A/C problem? If so, I'll have to > tell the mechanic to check my A/C. I'm not experiencing problems with > the a/c refrigerant though, it still keeps me cool during a hot day. If it was WHITE it still sounds a lot like water vapor (fog). This is not terribly unusually, as folks have said. Another tipoff is the smell. If it is smoke it will smell, if no smell it is likely fog. Turn actual AC off, or turn temp control all the way to heat. Leave blower on. If fog/smoke disappears now, it is definitely fog. Was it smoke, or "fog" (water vapor). Ed > 1994 accord. > [quoted text clipped - 3 lines] > > Anyone know what's going on here? I hope it's not poisoning. > 1994 accord. > [quoted text clipped - 3 lines] > > Anyone know what's going on here? I hope it's not poisoning. Is there any odor associated with the "smoke"? Could be steam from a failed heater core. |
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