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Old 02-12-2006, 09:43 PM   #1
Worst Mod Ever
Member#: 369
Join Date: Oct 1999
Chapter/Region: SWIC
Location: Phoenix, AZ
12 CTS-V Wagon
17 GTI

Default A/C Condenser Fan Problems

I recently purchased a 99 Impreza OBS that has already been converted to an EJ205 with 2002 WRX ECU. It retained the stock 99 OBS A/C, radiator and fan assemblies.

The only problem I have found with the swap is that the A/C condenser fan does not work correctly. When the A/C button is pushed the A/C condenser fan turns on for < 1 second then turns off. I checked the voltage at the harness and it sees 12-14v for < 1 second then back to zero. If you make a jumper for the Sub Fan Relay-1 the fan will stay running. The A/C blows cold the entire time, just the fan shuts off, causing the compressor to cycle when the car is not moving or in stop and go traffic.

Any thoughts from you experienced swappers? I need to get this fixed before it gets hot as the previous owner burned out a couple A/C compressors before we discovered what the problem was.

Cliff Notes: Something is cutting the A/C condenser fan 12v signal almost instantly after sending it. 99OBS with EJ205, 2002 WRX ECU, 99OBS fan assembly


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Old 02-13-2006, 09:32 PM   #2
desert pirate
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Member#: 70033
Join Date: Sep 2004
Chapter/Region: SWIC
Location: Nasioc nursery
use thesearchbutton


I have an 02 wrx and when i turn the ac on the thing doesnt spin at all it used to come on for one second also then shut off , now nothing.
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