My a/c is really starting to bug me. In auto it blows through the defroster (windshield) and the face vents. It almost sounds like the defroster fans are rattling. If I turn the defroster fan off the sound goes away.
View 5 RepliesDefroster/heater fans quit without warning. Heat continues to flow from vents but volume not enough to keep windows defrosted. All fuses fine.
View 2 RepliesI love my car but under 25 degrees it freezes up. My windscreen ices on the inside like the old time movie windows. My defroster only clears the center area leaving me an oval to look out. Takes forever to clear frost. Granted the weather is ridiculous in the north east. Second no matter how much snow is cleared as soon as I open the door, whoosh it's all sucked in on my seat. Next my clutch sticks in this cold weather, have to run heat on my feet. The bottom first inch of travel it sticks making shifting a chore until warm enough. The stock Pirellis turn into hockey pucks at 30 degrees. They stiffen up bad in the cold. I know they are all seasons but damn. The wipers also build up a ton of ice by the A pillars and where they sit by the hood. Steadily decreasing the amount I can see out and have to stop a lot. The ice under the wipers freezes into a huge chunk. Makes it a fight to remove the glacier. Just things I've noticed, never had any of these annoyances in any other vehicle.
View 23 RepliesWhy does my front windshield wipers come on when I turn on my rear defroster?
View 2 RepliesNew GTI owner here! Just picked up my '16 carbon steel gray Autobahn with PP, DSG, DCC, Xenon. Really enjoying it. Coming from an 07 E92 335i, I'm still getting used to the very different feel of this vehicle, but it's mostly a pleasant experience. However, one issue: there's a sound coming from the defroster vents, a kind of dull "rattle sound" that isn't anything terrible but I wish it wasn't there. It isn't a leaf hitting a fan blade as it goes away if I turn off the defrost vents. It just sounds like air hitting a rough edge on something causing a turbulence noise. I guess it could be something fluttering in that area, but I can't see anything when looking at the vent from outside the car and it's very constant.
View 15 RepliesMy R now has 78k on the clock so I guess it's time for the obligatory issues with the radiator fans. My car started running hot from time to time, not constantly. Brief explanation of the issues and my "diagnosis" for each:
Without the A/C turned on the fans don't come on - when I turn the A/C the passenger side comes on all the time (faulty switch). Driver's side fan is intermittent - usually it turns on with the a/c but if it doesn't a tap on the center with the lug wrench gets it spinning (stuck brush).
The main thing I want to make sure is that it's not a thermostat issue as well (or instead of the switch). The heat works fine - I've been blasting it every time I hit traffic on my way home just to ensure that the car doesn't overheat. My assumption was that if the heat works then the thermostat is opening to allow the coolant into the heater core.
I have changed all fuses and even the temp sensor to the green one. My fans wont kick on unless I put on the AC. Where is the fan control module?
View 4 RepliesSo once I start the car the fans kick on, and stay on, even when off. The car currently has no coolant in it and it is not being ran longer than to simply start it. I am guessing the fan control module is no good? Anything else to look for? The car has a new green coolant sensor and the coolant res. is deleted.
Also, what resistor to remove the coolant level sensor? I would like to rid my dash of that annoying light.
The fans in the engine bay wont turn off. As long as the car is on they run. they do turn off when the car is off.
View 10 RepliesI think my fan module might be bad because neither of my fans spin anymore, and my air conditioning doesn't work either. My buddy let me borrow a fan module but it isn't the right one, I just need a picture of the connectors or a part number would be good too.
View 1 RepliesAs it was such a matter of time, my fans on my 24v gave up during winter, no big deal as it was a pretty cold winter but now that spring is around the corner, I gotta fix this issue. To they change for the same OEM unit that will die in the next 30k miles.
View 3 RepliesStarted the R and moved it out of the garage after the motor build. At which during that time I replaced the large fan with a new one from Ecs and the small one I took apart and cleaned up after I found the Diy for it.
Before I rebuilt the motor the car started to over heat on its last ride home before the rebuild (Neither one of the fans would turn on). So I replaced the switch on the radiator today and let the car warm up and the fans didn't kick on again. I checked the fuse and it good but I'm not sure where the relay is.
Also my A/c is not charged up. I also touched the coolant lines running to the Aux radiator and they are cold. And I do hear the after run/electric water pump running.
The green coolant temp sensor is clean and plugged in. Could it be the thermostat? Are there any fuses in the panel that sits on top of the battery that deal with the fans? Is there a way to test the coolant fan control module?
I have a 1.6 8v mk4 Golf, and my fans started staying on all the time. There are 2 coolant sensors on this model, one is the green one, and the other is the black one which seems to be hardwired into the thermostat housing. Anyway, I changed the green one, and that didn't solve it, so changed the whole thermostat, which obviously came with a new sensor build on....Hey, it worked, for 2 weeks, and then the fans started coming on again as soon as you turned the ignition key...and the temp needle doesn't move much, as before.
My suspicions have moved to the sensor wiring loom, that was fiddled with, while changing the thermostat...I hear they can become brittle over time, and so behave as if the sensor is unplugged, i guess.... Do these wires unplug anywhere in there so I can test the loom properly?
As the title says, car is overheating. Car gets to 190F within a couple miles drive. Temperature fluctuates between 190F and 225F.
Water pump was replaced ~2 months ago. Was not overheating prior. Temp reached 190F and stayed. Currently has the "black top" coolant temp sensor.
I noticed the coolant fans are not running after I turn the ignition off. This time of year they would usually be running after turning the engine off. If car is overheated and with AC off the fans do not run while engine is running.
I used the guide below to try diagnosing the cause: [URL] ....
Remember both fans should come on in slow speed any time the key is on and the AC is on - if the temperature is above about 32 F (0 C). Both fans run with key on and AC on
S180 (fuse 8, 30 amps, green plastic, above battery) must be good for slow speed operation.
Fuse and holder look good: no melting, no discoloration.
S164 (fuse 3, 40 amps, metal strip, above battery) must be good for fast speed operation.
fuse looks good: unbroken.
To ensure the AC circuits and the Fan Control Module has power check:
Fuse 5 on the cabin fuse panel.
Fuse 16 on the cabin fuse panel. When this fuse is blown the radiator fans will often run unexpectedly.
Fuse 25 on the cabin fuse panel.
All three fuses look good: unbroken
For the first test of the slow speed fans from the radiator thermoswitch have the key off.....Both fans should run in slow speed.
Passed test: both fans run slow
The second test is for the fast speed fans, key on, AC off.... Both fans should run in fast speed.
Passed test: both fans run fast
If the fans run in the tests above, then you should be good to go. No further tests are needed.
If you have been seeing high coolant temperatures and the fans have not been running, then you may need a new thermoswitch.
how common a problem it seems to be that our fans just stop working. Replacing those later this week.
My question is concerning my AC not working. Is it possible that, since the two fans won't work at all, the AC system won't engage? Or do I have two completely unrelated problems?
The last few times I drove my car, I noticed the A/C didn't feel very cold. I checked today, and noticed that neither cooling fan comes on with the A/C on. My understanding is that both fans should be in LOW mode with the A/C on. Also, after idling for a while and even after doing some spirited driving and pulling over, the fans never turned on.
From what I'm reading, this sounds like it probably is either the fan control module or the fans themselves failed. Is the fact that both fans don't work in either high or low speed point to this being more likely to be a fan control module? Would this show up as a fault code on a VAG-Com scan?
After about 3 weeks, I finally get my 04 .:R32 back from the shop after getting a new fuel pump (long story there) and the mechanic mentioned the fans began to run and stay running when the key is turned to the on position and then turned off, key removed etc. I picked the car up tonight and repeated his claim turning the key to the on position and the fans kicked on and stayed on until the battery was disconnected. I am hoping there is an easy fix. What this could be? FCM maybe?
View 20 RepliesCompressor does not engage, and my fans do not come on when I turn on the A/C. They do come on low speed when I jumper pins 1 and 2 on the temp switch plug, but they do not come on high speed when I jumper pins 2 and 3.
I have replaced the FCM with a new one, as well as a guaranteed working used one; neither one changed anything. I assumed right away that it was the fcm because my original one has a hole eaten through it from battery acid.
Compressor clutch ohms out within spec, and it will engage if jumpered.
So this seems to be a common code that is thrown when you near 100k miles, I'm at 77k .. This thread seems to be the most organized [URL] ....
"Long story short, there are 5 main reasons this problem can pop up, listed in order of likelihood, least to greatest:
1) Coolant sensor
2) Thermostat
3) Bad fans
4) Coolant mixture
5) Water pump "
My issue is that the only ones I'm (probably) able to rule out is coolant mixture and bad fans. My radiator fans do turn on from time to time, so I thought I'd ruled that out (unless it would throw a code for not turning on at appropriate times?)
I heard of a test to turn on your AC and see if they turn on, but my AC hasn't blown cold air like ever, so I don't know if that affects the test (probably not?)
A couple years ago I had a shop replace the original thermostat with the new one, or was it the coolant sensor, or both (ugh, I don't remember!) That leaves thermostat, coolant sensor, and water pump.
I guess my main question is is there anyway to find out which it is between these 3, without spending so time, money, parts etc? It doesn't seem the coolant sensor is easily accessible for one.
My car has been really slow recently but I also need to change the spark plugs, I'm doing that this week. I cleared the CEL/P2181 code and it returned a few weeks later,
I'm starting to change my mind about this car being easy to maintain/reliable, I'm always on time with maintenance and with only 77k miles on a 2004 car.
I don't understand what is going on I noticed smoke coming from my fans radiator fans and I'm pretty sure that it was motor being fried I've gone to the junkyard and bought a used assembly hooked it up and still nothing could be a possibility that when the motor fried it fried the control module for the fans
View 1 RepliesSo my friend, ignoring my advice that this generation seems to be riddled with electrical problems, decided to purchase a seemingly nice 99 Jetta, with a junkyard AEG swapped in(AEG is written on the intake and block like a JY would do). Sun roof doesn't slide back, gets jammed, evidence shows water has built up previously and run down the A-Pillar to the fuse box.
I just got the fans unplugged and verified that the fans with power applied, both have their low/high speeds. The fuses on top of the battery are in-tact, no visible melting, looks like the thing is in ok shape(haven't taken them off to inspect the contacts yet).