Civic - Honda :: 2003 - No Heat Coming From Vents Unless The Car Is Over 2000 RPM
Nov 10, 2014
2003 Civic, ~180,000 miles. Previously had overheat problems, replaced head gasket, timing belt, water pump, thermostat and hoses (+ a few other things) No longer over heating, but there is no heat coming from the vents unless the car is over 2,000 rpm. Hoses to the heater core are both warm/hot, so flow through heater core seems to be good. Also AC has same issue no cold air unless over 2,000 rpm. Is this the control to the blend door? Are they operated by vacuum and with a leak, need higher vacuum to operate?
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We have a 91 civic whose air conditioner doesn't work. The coolant level is good, and the compressor is running, but we only get external air coming through the vent.
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Problem: About 10 minutes after driving, the heat starts to blow out of the upper vents when the a/c is on automatic. The heat comes out even if the outdoor temperature is mild (55 – 70 degrees Fahrenheit) and the cabin temperature is warm, which heats up the SUV quickly making it very uncomfortable. Turning the a/c off tends to somewhat solve the problem some of the time, however, occasionally hot air creeps through the vents even with the a/c off. The a/c often makes a gurgling sound whether it is on or off. I noticed today (2/3/12) that the back vents are not affected by the problem, so the very warm air is only coming from the front upper vents.
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About mid-October I noticed when it as real cold out and I had the heat running whenever I would come to a stop I noticed there is very little to no heat coming from the vents, despite the engine being warm and running at operating temps. At the time I was working for a shop and I asked one of the mechanics what the problem was. He said that it was the radiator not having enough coolant.
Turns out when we pulled the cap the coolant res, was just about bone dry. So we added in about a gallon or so of coolant with the truck running and sure enough at idle the heat was back.
Fast forward to the last couple of weeks and when I am sitting at idle again same thing happens. So somehow the engine is losing coolant. Its not ending up in the oil (no white on the dipstick) and there is not a coolant leak. As it sits there is 255,300 miles on the truck now. 1999 5.4L F150....
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I noticed a couple weeks ago after starting the truck and turning on the a/c that nothing was coming out of the vents. I found it odd when after driving a few miles the a/c kicked in and started blowing cold air. Today I needed to put on the defrost and same thing, nothing came out of the vents. I drove around for a while hoping it would kick in just like the a/c did but nothing. I did check the fuses and relay. When you turn the control either to heat or a/c you can hear a clicking sound under the hood. It's trying to engage but nothing is coming out of the vents.
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2003 Honda Odyssey 150K+ miles... My wife called today and said she was smelling raw gas coming from the heater vents on the first cold day this year. I thought we had this issue last year but not 100%. What it could be or how to fix it?
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I have a 2003 Honda Civic coupe (EX) that makes a loud squeal. It starts when I just get going in the car, maybe two or three minutes into the drive. The squeal seems to come from the engine, and lasts for 15 to 30 seconds, before abruptly stopping. I seem to think its a belt, but not sure why its doing it or how to stop it.
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I have a 2003 Honda Civic coupe that is making a interesting noise. When making a hard left turn with some speed, an intermittant rubbing noise is coming from the rear right tire and wheel. I cannot duplicate that noise turng right at any speed.
One more fact, the right rear and left front tires lose 5-10 psi of air a week. They were filled yesterday, so they should be around 30 psi still (door sticker recommendation). New tires put on last summer by previous owner- not sure if they were losing air at that rate before the new treads or not.
I plan on buying a used wheels to replace current ones to hopefully remedy the losing air situation!
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The heater fan runs fine. Cold air comes out of all the vents (defroster, floor, dash). There is plenty of coolant in the system, and my mechanic advises the engine is running at the correct temperature. The heater hoses at the firewall are warm/hot as if coolant is flowing through. Flushed the heater core (but that didn't fix the problem). My mechanic now wants to drill some holes in the duct work to see if there is a mouse nest or some other obstruction.
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I have a Honda civic 2011. Sometimes my middle two ac vents is not blowing out any air at all ( but the sides somehow works very little ). The reason why I said sometimes is because it stopped working for a day then it would work again the following day. I don't know what's wrong with it. I called for an estimate and the guy tells me if he has to open up the dashboard to open up the vents it would cost in upwards of 800.
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540,000 kms Canadian climate. It happened once last year at -30 C. Recently, it was very cold again and the car ran ok but no heat and the gauge was going up to hot - it never gets that high, even in hot summers. One thing - I used the block heater on both occasions and I never used other than those times. Without using the block heater it does blow warm air (-20C currently). I did note today that the coolant was a bit low perhaps from overheating the other day? Would my block heater affect the thermostat? No coolant leaks noted under the car.
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1990 honda civic lx Won't start after being in heat/hot sun. Starts after 5 min or when it cools down.
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Nothing will blow out from vents, with heat or AC. I checked the fuse under the hood and that had continuity, I checked the 7.5 fuse under the dash and that was fine. I also replaced the blower motor resistor and the blower motor with brand new ones. Also used a test light to make sure power was getting to the resistor and motor and that is all good.
2004 Honda Accord EX Sedan .....
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When I start my 1999 Honda Civic, a sort of sulphury smell comes through the vents. I ended up having my compressor replaced today, and I assumed the smell would be clean, because the a/c is new. (Tells you I don't know much.) Anyway, the smell is still there, along with a smell from the oil (I have a small oil leak) and engine. It all goes away after a minute or two, but is this anything to worry about?
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Recently I noticed that I still have hot air coming through the vents with the climate control system completely off. I can tell that the fan is off because it's not blowing through the vents but the vents are very hot.
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The other morning I started my car up and no heat or air would come out of my vents. The night before I had to drive through a blizzard and my car was completely packed with snow. The climate controls function normally, everything is lighting up when i select a button, but no air is coming out of the vents (rear defrost and seat warmers work fine). There is no sound of the blower starting when I turn the air on, hot or cold. I live in Northeast Ohio so we currently have several inches of snow and it's well below freezing outside. I live in an apartment so my car is outside 24/7 between being here and at work. I looked up a bunch of posts on here and other websites to try to figure it out. I ended up taking my cabin filter out and it is completely packed with snow. So i vacuumed out the snow that was left in the cabin filter housing as far as i could reach. I also unpacked as much snow as possible from wheel wells seeing as the HVAC vent goes to there, and the blower still doesn't work.
What I am guessing, which I could be completely wrong, is that the HVAC vent is completely packed with snow and it's not letting the blower turn. I guess my question is does that seem remotely possible or is it something else completely? My climate control doesn't work on the highest setting so I don't think its the relay I read about and my heater has been working fine with no noises or anything and I don't believe it would just go bad out of the blue.
2012 Passat SE 2.5
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History: A few months back I had a leak repaired in my cooling system. I noticed the other night that my radiator was nearly empty again, so I've filled it back up, but haven't fixed it yet.
As summer is over, I no longer need my AC. However that caused me to notice that at its coolest setting, the vents are blowing warm air (maybe 15º warmer than outside) and that seems high to me.
My immediate thought is that the heater control valve may be leaking/damaged/corroded.
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Snap, crackle and pop sound coming from the vents in the front and rear when the heat is on. It sounds like rice krispies with milk.
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The vents in my 2002 Prius are starting to become problematic. When I turn on the heat, the air is not coming out. When I hit the glove compartment, the air starts to come out, but it is very low and stops after a minute or two. I just want to know if the blower motor is dying, and how to replace it, if it is really the blower.
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I have a 1999 Dodge Durango SLT 5.2L (318) 4x4. My problem is that there is no air or heat coming from any of my vents. It started out where there was no air coming out on the lowest setting. Then a few days later, no air from the next highest setting. It then continued to where absolutely no air coming from any setting. I don't know where to even start looking.
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I have a 2003 GMC Envoy XL. There isn't any heat or air conditioning coming out of the overhead vents. My mechanic tells me it is a control head module. I would like to try and fix this myself. I don't know where this module is located on the vehicle. It seems I could just remove the defective one and replace it with a new part. Are these modules easy to find in part stores and how expensive is this part?
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