Passat (B5) :: A/C Isn't Blowing Cold Air
Aug 12, 2011
I have a 2004 Passat 1.8T and I am having issues with my a/c. it isn't blowing cold air. The first time it happened, I paid to have it recharged and it worked for 2 weeks then it went on the fritz again. I had the gas pressure checked and it is at a regular level. The second cooling fan comes on when the a/c is turned on, the fuse and the relay are also good. I checked the a/c pressure sensor and it is also working properly. I suspect that there is a valve or sensor that has seized up (due to the temporary addition of refrigerant). I also scanned the HVAC for fault codes and the only fault is an air flap position motor.
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My 2013 Passat SEL TDI has 40,000 miles on the clock and in the past few months I've noticed it's taking longer to start blowing cold air. I've had several summers already so I'm already used to it's performance in the hot summer months but this summer has been different. The A/C will not blow any cold air at all before the car gets going under load (it didn't need engine load before) and sometimes it just won't blow cold at all but just barely "cool" air. I'll sometimes be driving for a half hour and never get the A/C to really blow cold.
Other times, it'll blow just fine. It's the hit and miss performance that has me confused. I then bought one of those refrigerant bottles from an auto parts store that comes with a gauge to see if maybe I have lost refrigerant or it's low but when I checked the gauge the pressure was exactly where it needed to be. I just came off that dreaded 40K service at the dealership and am trying to avoid going back there at all costs...
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Turn the interior air fan On, select air for Windshield, AC Button turns On. I turn off AC (amber light turns off on AC button), but i still get ice Cold air that is blowing on to the windshield.
I this normal? Never had this issue with other car makes.
Just want to know before i take a trip to the dealer. Its a new car with 5k miles on it. Its been doing this since day one.
I also cant select recirculated air for windshield.
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I took my 2000 V6 Passat into the shop because my heater vents were blowing cold. They tested the system and told me the following:
The hoses leading to the heating core are warm, but no warm air is leaving the heater core, indicating that it's plugged up with corrosion. They testing the coolant fluid and found that the incorrect coolant had been put into the system and that the fluid was carrying an electrical charge that must be corroding the aluminum portions of the system. In addition, the engine temp sensor is kaput and never goes up.
They offered a garden hose flush the heating system for a few hundred bucks, but warned that it is only 50% successful. They recommend replacing the heating core.
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2007 passat wagon fsi auto..
Any fuse/relay of any sort for the ac system. My ac stopped blowing cold completely, didn't even fade out. So I was wondering how is best to troubleshoot and also had questions if I could recharge the system myself if that be the problem.
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The A/c stopped blowing cold on my 06 Passat 2.0t. I checked the pressures on the low side of the system and it was 100 psi with a cold engine and 130 when hot. Obviously this is too much. It seems as if the compressor is always engaged even when the a/c is off (every part of the a/c pulley is always spinning the little nut sticking out of the center of the pulley spins as well not but im not sure if that's how it is when the compressor isn't engaged).
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2002 Passat v6 - climatronic control...
I have just cold air blowing at idle and under load. I have read posts and checked the following: temp remains at 190, heater coil hoses-both are hot and removed the dash to see if the flapper door (red arm) was moving-it is. Any other things I can check?
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Have 2003 V6 FWD Passat. A/C blows hard but quit blowing cold. Noticed last week, that sitting for a long light, A/C would quit blowing cold, then cycle on again every 20-30 sec. After worked fine. Yesterday no cold air.
Read on forums about the 384 relay. My electric fan is NOT coming on. Started car, turned A/C on high, and checked voltage on connecter to fan. was negligible. Car was fully warmed up, so i figure voltage should be 14.0 VDC
Making assumption that it is either the AC relay 384, or the fan relay but there are two, a 214 and a 213.
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When I start the car after its been sitting for a few hours it takes at least 10 minutes to the ac to start blowing cold air. If it sits for less than an hour cold air comes out right away. Went to the dealer last summer and everything was working to spec, of course...
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I have a 2002 Passat that is only blowing cold air when it is supposed to be heat. I have checked the following items:
1. Both heater hoses are hot at the heater core which would indicate that the core is not restricted.
2. Air has been bled at the heater core and the antifreeze is at the correct level.
3. Car thermostat is operating correctly and maintains a steady 190 to 195 degrees.
4. When temperature control lever is moved from "cold" to "hot" the air noise definitely changes like a damper is moving but there is no change in air temperature. This is a manual control with cables (not digital read-out).
From what I have read so far I am convinced that there is a problem with the blend door but referring you back to #4 (air noise change) I believe that the cable is moving the damper. Can the blend door be accessed on this car without removing the center console? Can it be accessed through the glove box area?
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Was driving down today (4 hour trip) my AC is not blowing cold air at all... I had the temp set to 62 and fan speed all the way up and i can barely feel it with my hand... Feels like no air coming out of the vents but the air is set to the highest speed, i can definitely hear the fan blowing but no air (very weak air).
After park our car for about 2 hours, on our trip back the AC worked again... i was able to get nice cold air at fan speed 2... but it only lasted 2 hours, half way into the return trip... same thing happened!! Fan speed all the way up, temp set to LO and still very weak air and temp feels like 78.
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My A/C wasn't working (blowing hot air instead of cold), so I had some repairs done. First I was told it was some sort of bracket, replaced that. Then the guy told me it was the compressor, replaced that. About $1K later, he returned the vehicle to me, and the A/C worked about one hour, and even then wasn't super cold. I have since had the freon level checked and there are no leaks, everything seems to be OK, it just doesn't cool.
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Over the past few days my A/C has gotten progressively warmer to the point it's not blowing cold at all. Early summer I checked the low side pressure and it was at around 30 while running. I added a can to bring it up to 35-40. Blew ice cold air all summer. Now when I check the low side pressure it's around 40 when off. When I run it, the compressor short cycles. When the compressor kicks on, the pressure drops real low (LOW on my guage). When the compressor kicks off, the pressure goes up to about 55-60 then drops back down low for the 2 or 3 seconds until it kicks off. Thought I might have a leak but after seeing the system pressurized like this, i don't think so.
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My car is blowing cold air but no heat at all. I checked the codes and it's throwing a B1 1-3-1. It's also throwing a A7 1-2-2. a buddy of mine is a mechanic but not too familiar with Volvo's. But he said that he thinks the B1 1-3-1 Driver's side air duct short is the problem. Is this the problem and how do I fix it?
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Today I got in the car and turned on the ac, got no air blowing. Turned the ac off and the heat up, still nothing. I assume the blower is shot or maybe the fuse? I could hear the vents switching from top to bottom as I changed it but no air coming out. Where would the fuse be? What to check? Engine cooling fans replaced last year and working.
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100 degrees in Florida a couple days ago and I pop the ol' AC and chilled seats on. It is like a blowdryer on my face. Uh-oh.
After pushing multiple buttons and settings, I can't get the air cold....except on the right side of the car.
The right/center vent and far right vent in the front, and the rear passenger right vent will blow cold, while the left/center, far left, and rear left vent blow warm-hot air. Tried everything from Low to 70 to 74....same results. The right side will adjust up to heat if I put it on hot air matching the left side.
Are there two compressors in the car? Is there a stuck vent? Fuse issue? Something more sinister?
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So it's finally been nice this week, only problem was it was Humid as it poured for more than 24 hrs the day before. I tried using my Ac but all it was doing was blowing warm air. I figured it was the car being hot since it it black and it was sunny & I did have the car running. I tried using the Ac yesterday and it was blowing slightly colder air but still warm. I don't know what the problem is and so I went to my moms elantra to compare since we have the exact car just different colors and her car was blowing air as if it was straight from the arctic.
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Heater is blowing cold air. What I have checked, coolant level, replaced water pump and thermostat, checked blend door, flushed heater core. When I checked the blend door via the heater treator method I was getting hot air coming off the core but also getting very cold air coming from the A/C evap in side the plenom box. I also pulled the fuse for the A/C clutch and I am still getting cold air. I am look at replacing the HVAC contol.
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Suddenly yesterday, my AC was blowing hot air on every setting except for Max AC. When on Max AC, then heater control valve closes but with just AC, it opens back up. for floor, defrost, etc. seems to work just fine, but it blows engine hot air at those places except for Max AC.
It seems as though the temperature control is stuck in hot or quit working all together, AND (I'm guessing here) that Max AC overrides the temperature control? That's the only thing that make sense to me.
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When i turn on the ac its cold for about a few mins and after it just starts to blow air and its not cold anymore, also it smells funny when i turn the fan on for a few seconds.
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I have a 2004 2nd generation Toyota Harrier (Lexus model RX330). The A/C blowing hot air if temperature is not set to Max Cold. This happened no matter whether turn on the A/C with Auto or Manual setting. This case also happen no matter whether setting the A/C system to Dual mode or not, no matter whether turn on or off the air intake control button.
As long as A/C on, cold air only come out when temperature set to Max Cold, even if set to 18 degree, full hot air come out. Another thing is, say I have the A/C on, set to max cold, cold air came out from the front vent, but after I try to increase the temperature to say 18 degree, the hot air flow will change to Floor/Windshield mode.
Could it because due to the change of the battery? Is there anything need to reset after replacing the battery?
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