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my 2000 a8 is running hot while stopped in traffic please help

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my 2000 a8 is running hot while stopped in traffic please help

  #1  
Old 07-28-2008, 10:27 PM
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Join Date: Jul 2008
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Default my 2000 a8 is running hot while stopped in traffic please help

hi,
i have a 2000 audi a8 the car runs fine with the a/c on but as soon as i stop somewhere and keep the motor running the temp gauge starts to climb and the a/c starts blowing hotter rather than cold. but if i stop and keep the car running and turn off the a/c it will not over heat maybe i need a fan but which one? please help
 
  #2  
Old 08-13-2008, 07:15 PM
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Join Date: Feb 2008
Location: Ireland
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Im having the exact same problem on the same car,same year. i was wondering if you found any solution.i bought more coolant (G12) and added it but to no avail.
 
  #3  
Old 08-14-2008, 10:03 PM
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Join Date: Jan 2008
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Default Overheating Issue

I had this exact problem on my VW Passat, turned out to be the waterpump (plastic implellar had failed portions), with the A/C on in traffic the car would begin to overheat, a relay turned off the A/C to keep the car from overheating. When you started moving again the air would come on cold. Check the coolent flow from water pump, and or possible obstructions in radiator.
 
  #4  
Old 08-14-2008, 10:04 PM
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Also make sure your fans are both running when a/c is on...smg
 
  #5  
Old 08-16-2008, 02:19 PM
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thanks for the reply il check it out and see if it helps
 
  #6  
Old 08-16-2008, 02:36 PM
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Thermostat?
 
  #7  
Old 08-16-2008, 06:42 PM
Ska
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Check the water pump 2nd first check the viscous fan coupling with a carrot or similar at engine opperating temperature. If it stops by applying a carrot or pencil then that's the cause then pump is a larhe job as the whole front end of the car has to come off as if you were doing a timing belt change.
 
  #8  
Old 08-19-2008, 04:45 PM
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Hello to all of you that have posted.

I had the exact same problem with my '00 A8 and it got to the point where my a8 would heat to the highest point when i was on the road saturday morning. what you'll have to end up doing is you will need to replace the thermost and the gasket leading from the t-stat to the lines. the rise in heat is usually due to a blockage in the t-stat or somewhere along the lines. tends to come with age cause my car only has 59k miles on it, but before i got it, it had been sitting for a substantial amount of time so im assuming the t-stat and gasket just need replacement over time on other A8s..(not sure). but yea, i had to stop the car and the y-pipe in the lines carrying the anti-freeze exploded due to the blockage in the fluid. the anti-freeze sprayed to the top of the engine block which emitted steam from under the hood.

so yea... long story short... it's 6 hours of labor because it requires removal of the entire front end which translates into $450 in labor and $125 in parts... but yea, it has to be done or else it'll lead to your entire engine seizing due to heat i'd think.
 
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