DIY 99-02 Efan Swap Tech Info
07-15-2016, 04:04 PM
#23
When you swap from a 99-00 OS you need to make minor changes to the calibration so you don't get a false check engine light.
99-00 is wired different from 01-02 for the charging system.
Only inferior tuning products require that...
07-15-2016, 04:46 PM
#24
And? IIRC, correcting this entails nothing more than turning off a single DTC.
For efans on 99-02: 01-02 OS, F-body fan settings (customize on/off temps to your desire), 145a alt, and OEM harness with appropriate pinning. Yes, you don't have control of the fans based on a/c pressures, however I have yet to encounter a single problem without them. Some have wired in switches to turn on the fans manually, which is also fine.
07-15-2016, 04:49 PM
#25
And? IIRC, correcting this entails nothing more than turning off a single DTC.
For efans on 99-02: 01-02 OS, F-body fan settings (customize on/off temps to your desire), 145a alt, and OEM harness with appropriate pinning. Yes, you don't have control of the fans based on a/c pressures, however I have yet to encounter a single problem without them. Some have wired in switches to turn on the fans manually, which is also fine.
For efans on 99-02: 01-02 OS, F-body fan settings (customize on/off temps to your desire), 145a alt, and OEM harness with appropriate pinning. Yes, you don't have control of the fans based on a/c pressures, however I have yet to encounter a single problem without them. Some have wired in switches to turn on the fans manually, which is also fine.
99-00 are wired with 1 wire 01-02 use 2 wires. you have to change them from on to off as I mentioned before.
07-15-2016, 05:03 PM
#27
99-00 OS charging
01-02 OS charging
These are Stock tables in EFI Live you have to modify the 01-02 to look like the 99-00 by turning off the F terminal
The HPT table is similar but uses 0 for OFF and 1 for ON.
Last edited by 1FastBrick; 07-15-2016 at 05:11 PM.
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randybill (04-05-2018)
12-21-2017, 11:33 PM
#28
Staging Lane
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I suggest adding in a delay on Fan #2 to help from burning up wiring and/or relays... I noticed that if all the conditions were set to turn both fan 1 and 2 on at the same time the load the fans pulled was like 20+ amps (measured with a clamp meter) with the 05+ efans. I would burn up a relay every 6 months. That delay allows fan 1 to turn on and get the fans up to half speed, then fan 2 kicks on and the fans don't draw as many amps since they are allready turning..
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03-31-2018, 09:38 PM
#30
Teching In
what OS to use?
just finished wiring in my 05 efan harness into my 2000 ecsb 1500. fans turn off on with HP tuners fine. it'll be ahwile before I get the truck running to actually test fans that way.
fastbrick mentioned a newer os? I have no problem spending more credits if my fans will work. please advise. longtime listener on here.
ETA: more searching tonight revealed that 1fastbrick has already written about this.
https://www.performancetrucks.net/fo...h-info-536648/
fastbrick mentioned a newer os? I have no problem spending more credits if my fans will work. please advise. longtime listener on here.
ETA: more searching tonight revealed that 1fastbrick has already written about this.
https://www.performancetrucks.net/fo...h-info-536648/
Last edited by randybill; 04-01-2018 at 09:17 PM. Reason: added link for others to follow
