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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 08-04-2015, 01:27 PM
AV8R4AA AV8R4AA is online now
Officially Welcomed to the 'Fest
Location: Dallas
Join Date: Jun 2011
Posts: 230
Mein Auto: 1987 //M6 2000 528it
How cool are you?

Wondering what AC vent temperatures everyone is getting.
I'm in Dallas, I am getting about 46.5 degrees center vent.
That's max cold temp,recirc on, 101 degrees driving down the road.
Rotary dial 3 blue dots.

It takes about 10-15 minutes to cool off the cabin to get those temps.
The internal temps are 120 degrees after sitting in the sun several hours.

I have a dark blue exterior and window tint and grey interior.

How well does your AC work in your neck of the woods?
I love my BMW 528it
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Old 08-04-2015, 01:39 PM
edjack edjack is offline
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Location: San Jose, CA
Join Date: May 2007
Posts: 11,132
Mein Auto: '97 540i 6 speed
Sounds pretty good.

Mine blows 40 deg, fresh air, 85-90 deg ambient, AUTO mode. Never recharged.

The system is designed to blow max of 4 deg C out of the evaporator. This prevents evap freeze-up in humid climates.

Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
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Old 08-04-2015, 02:49 PM
1gr8e39 1gr8e39 is offline
Looney Tuner
Location: Bellevue, Wa
Join Date: Jul 2015
Posts: 171
Mein Auto: TOTAL TERD 540
Stück in Houston reported temps of 39 degrees after having his apart then recharging it.
M62-STAGE 5 Dinan 5-Sport-Sterling/Black-NAV-DSP-PDC-Sunshades-99k-AFE C.A.I-Dinan MAF,Throttle Body, Intake Manifold, Strut Bar, Stage 2 Suspension, Stage 2 Trans Software, Stage 5 DME Tune-Magnaflow Cat-back- 19" Varrstoen ES2 9.5/10.5 on Conti DW 275/30/19

M54-STAGE 3 Dinan 5-Sport-Black/Black-Cold Weather-Dinan C.A.I., Throttle Body, Stage 1 Trans Software, Stage 3 DME tune, Stage 2 Suspension, Floormats-HRE 3 Piece 543r 19x10.5/9.5 on Conti DWS 275/245
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Old 08-04-2015, 05:51 PM
Jicafold Jicafold is offline
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Location: San Antonio
Join Date: Aug 2014
Posts: 166
Mein Auto: 540i
I measured this today in my 2002 540i in San Antonio with 100 degrees outside. With a mercury thermometor, I measured 2 degrees celcius, 35F after less than 10 minutes dirving. My AC is great. Cools off quickly and I never set it at more than 3 on the fan speed. After a while I have to turn it off as my corneas get frosty.
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Old 08-04-2015, 06:03 PM
Nfs021 Nfs021 is online now
What Speed Limit?
Location: Oregon, USA
Join Date: Nov 2012
Posts: 673
Mein Auto: 2002 540i
Mine was starting to blow on the warm side. After replacing the aux fan and evacuating with the vacuum leak test. I recharged the system to the factory 1.65lbs and now it blows super cold. If you leave it on full blast. After 20 mins you literally start to see your breath. Now that's what I call ICE cold
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Old 08-04-2015, 07:37 PM
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kakalika kakalika is offline
Officially Welcomed to the 'Fest
Location: Houston TX.
Join Date: Mar 2006
Posts: 393
Mein Auto: 11 X5 35D, 02 540i/6
With my 03 530, I get 40 degrees shortly after I start up.
Once I'm on the highway cruising at about 60 mph plus with good airflow to the condenser, I get 30 degrees after about 20 to 30 minutes.
I have a cooking thermometer with the probe permanently inside the center vent. If I hit stop and go traffic, the temp creeps back up to 35 - 40, but quickly goes back to 30 once I start moving.
Just goes to show the importance of good airflow to the front of the car.
Run flat tires? Nein Danke!
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Old 08-04-2015, 09:23 PM
AH673000 AH673000 is offline
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Location: Delaware
Join Date: Apr 2011
Posts: 340
Mein Auto: 1997 BMW 528i
On a 97 528 with a new compressor and dryer I am seeing 39 degrees @ 90 degrees and high East Coast summer humidity.
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Old 08-05-2015, 06:57 AM
wiltray4000 wiltray4000 is offline
Registered User
Location: Houston
Join Date: Apr 2015
Posts: 22
Mein Auto: 2000 540i
I am also in Houston. I recently replaced the auxiliary fan and get 40 degrees at the center vent when outside temp. is around 97-100 degrees. At night the temp will drop to 37-39 degrees at center vent.

Last edited by wiltray4000; 08-05-2015 at 06:58 AM.
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