B5 Models Please discuss all 1996 - 2001 B5 A4 topics here...

Temp rises when ac on and in idle

Thread Tools
 
Search this Thread
 
Old Sep 9, 2015 | 12:23 PM
  #1  
yellow_submarine's Avatar
Thread Starter
|
1st Gear
Joined: Dec 2010
Posts: 147
Default Temp rises when ac on and in idle

I've been searching around for about a week now and i don't get any definitive answer to my issue.
Problem is whenever im in idle and ac is on coolant temp starts to rise at about 3/4 120ish C and Oil temp at 120ish also. Im not sure if it will go over that but what i do is i just try to drive off and temp will go back down to normal. I had this problem even before i did my tbelt job. Also changed tstat and cts. No coolant loss and definitely bled all air out. Now i heard it could be one of my fans however i did test the viscous and i get some resistance when engine is hot/warm but still can be stopped with a bit of effort. Ac fan seems to turn on as soon as i turn my ac on but not quite sure if it runs at full speed. Any clue? I also unplugged ac fan switch while ac is pn and it kept running still. Now is that normal too? Thank you very much for your time.
 
Old Sep 10, 2015 | 04:39 PM
  #2  
elduderino200's Avatar
2nd Gear
Joined: Oct 2013
Posts: 550
From: Seattle, WA
Default

My guess would be the fan. I think it should come on when the car is idling to cool the coolant, and when the car is moving the passing air should be enough to cool it so the fan turns off.
Just a guess though. Have you made sure the fans turn on and off?
 
Old Sep 11, 2015 | 01:50 PM
  #3  
yellow_submarine's Avatar
Thread Starter
|
1st Gear
Joined: Dec 2010
Posts: 147
Default

Yeah fan turns on as soon as i turn ac on. But still in idle when i turn ac on during daytime temp rises even when ac fan moving. Now could it be that the fane is only moving on its lowest speed? I believe it has 2 speeds but i cant really tell if its high or low lol.
 
Old Sep 11, 2015 | 03:14 PM
  #4  
elduderino200's Avatar
2nd Gear
Joined: Oct 2013
Posts: 550
From: Seattle, WA
Default

what about the other fan? The radiator one. Does that one ever turn on?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Audi Forums Editor
Brand News, Concepts & Rumors
0
Sep 10, 2013 02:38 PM
Rudy's 01 TT Quattro
Audi TT
2
Aug 11, 2013 09:28 PM
pdigital
Audi A6
6
Jun 27, 2013 07:50 AM
Dstranks
Audi A4
4
Jul 15, 2007 12:06 AM




All times are GMT -4. The time now is 05:53 AM.