2008 Audi A4 Overheating / AC problems
#1
2008 Audi A4 Overheating / AC problems
Picture of engine load at idle with A/C on. Compressor must be switching on and off.
Specs:
My conclusion:
Due to the two front fans not engaging when they were supposed too, too much pressure would build up in the a/c lines and cause the compressor to have alot of stress, which meant it began to turn on and off and put alot of load on the engine. This engine load along with lack of proper cooling led to overheating, which was eliminated when natural air blew through the radiator from me driving at speed. The fix? I have no idea. Right now I'm guessing it's the temperature sensor or the fan control unit.
Other notes to be considered:
Below is a picture of the engine load at idle with A/C on. Notice the compressor switching on and off (assuming due to high pressure in lines).
Specs:
- 2008 Audi A4 3.2l Sedan
- About 85,000 miles
My conclusion:
Due to the two front fans not engaging when they were supposed too, too much pressure would build up in the a/c lines and cause the compressor to have alot of stress, which meant it began to turn on and off and put alot of load on the engine. This engine load along with lack of proper cooling led to overheating, which was eliminated when natural air blew through the radiator from me driving at speed. The fix? I have no idea. Right now I'm guessing it's the temperature sensor or the fan control unit.
Other notes to be considered:
- -When I got home I smelt burning clutch (I have an automatic so it was most likely the fan on the A/C compressor)
- -For whatever reason when it overheated they stay in a much lower gear, shifting up at twice the rpm than normal
Below is a picture of the engine load at idle with A/C on. Notice the compressor switching on and off (assuming due to high pressure in lines).
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