![]() ![]() I contacted the tuner and ask for a new file, they emailed me one, but they only changed ON/OFF temps under fan setting (which seems irrelevant to the issue) and he's insisting problem is not the tune. Truck has factory 3 wire pressure sensor on high side. It just doesn't respond to A/C HP sensor signal, apparently it doesn't cut off compressor clutch either, as it continues to run ( I checked with manual A/C gauge and high side was like 550PSI before I turn it off ).Recirculation fitted is set to "Fan # 2", Type fitted is set to "serial cycling" and "platform type" is set to "H2"by the tuner (All tunes with Efans I checked this field is set to "GMT800"). On A/C request, compressor clutch activates like normal, HP sensor reads around 1.0V and starts to go up (close to 4V), condenser gets super hot, but no fan kicks on. Now I need to do the necessary tuning in order to enable the fans. Fans work flawlessly as the ect goes up, no problem. I have a 2004 Silverado 1500 that I installed a later model electric fan on, with the wiring harness from. Hi, I also did e fan conversion on a 2003 truck (Hummer H2). I also made small changes to Start-up Airflow Initial on the same page and Spark Start-up Flare Control as they seem to spring to life a bit more freely without the clutch fan drag.how can I download the patch file.? New member I signed in etc I just made a new "Fan Patch" file with the suggested airflow changes for fan electrical drag. the cam is larger than oem and will require more airflow at idle so to request this the braf should be bumped up to around 10 g/s in the high temperature range and. ![]() I also made small changes to Start-up Airflow Initial on the same page and Spark Start-up Flare Control as they seem to spring to life a bit more freely without the clutch fan drag. The ls1 throttle body which would have been oem for the ecu file you supplied is 78mm not 92mm so the etc area scalar to correct this size change should be changed to 0.0178. you do not need to zero out the vvt cam tables themselves as those are now voided by setting the intake cam number to zero. you can zero out the vvt spark tables if you want. ![]() I just made a new "Fan Patch" file with the suggested airflow changes for fan electrical drag. set the vvt cam tables to zero on the intake side. The patch file did not originate with me but if I am passing them around they should have all that suits an e-fan retrofit. I suppose that I need to make these and a few other minor changes to the patch files before posting them anymore. I just added it to my tune and all of the clients' tunes that I have done this swap for.now to call them to stop by for a slight improvement. This helps a bit with the extra drag/bump from the alternator when the fans kick in. Middle of winter in the snow, sun beating down in the heat of summer, it doesnt matter, as tuners we want to be able to simply twist the key, crank the car. Under Engine>Idle>Airflow>Cooling fan airflow 2005 stock truck/suvs have 2.0 lb/h for Fan 1 and 4.4lb/h for Fan 2. One quick thing to add, after doing a few of these e-fans I noticed something that is NOT in the patch file I posted.that IS in a stock 2005 file. ![]()
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