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-   Cooling: Radiators/Fans/Controllers (https://www.lateral-g.net/forums/forumdisplay.php?f=89)
-   -   PWM cooling fan(s) control using ECM (https://www.lateral-g.net/forums/showthread.php?t=40215)

samckitt 03-26-2015 12:15 PM
Is there a preferred position where the AC pressure switch needs to mount? Between compressor & evaporator, evaporator - condenser, or condenser - compressor?

Vince@Meanstreets 03-26-2015 10:40 PM
Quote:
Originally Posted by samckitt (Post 600185)
Is there a preferred position where the AC pressure switch needs to mount? Between compressor & evaporator, evaporator - condenser, or condenser - compressor?
anywhere between the condenser and evaporator. #6 line

65C6Corvette 03-27-2015 11:37 AM
Quote:
Originally Posted by Vince@MSperfab (Post 600242)
anywhere between the condenser and evaporator. #6 line
Thanks,

This is helpful. Where did you install the trinary switch? Assuming that you also used it for the vintage air.

parsonsj 03-27-2015 11:56 AM
Quote:
Where did you install the trinary switch? Assuming that you also used it for the vintage air.
You don't want to use a trinary switch when the fan is being controlled by the ECM. You should use a binary switch to protect the compressor from over/under charge since the ECM doesn't control that.

Vince@Meanstreets 03-27-2015 12:01 PM
Quote:
Originally Posted by 65C6Corvette (Post 600282)
Thanks,

This is helpful. Where did you install the trinary switch? Assuming that you also used it for the vintage air.

I usually put it right into the drier. But if I can't inline on the high side hidden in the fender.

Quote:
Originally Posted by parsonsj (Post 600284)
You don't want to use a trinary switch when the fan is being controlled by the ECM. You should use a binary switch to protect the compressor from over/under charge since the ECM doesn't control that.
Yes, there should be an AC input wire right? Let me see if I can find the pin #

parsonsj 03-27-2015 12:09 PM
Quote:
Originally Posted by Vince
Yes, there should be an AC input wire right? Let me see if I can find the pin #
On the E67, the A/C request signal is via CAN request from the BCM, not a signal wire. :(

Vince@Meanstreets 03-27-2015 12:38 PM
Quote:
Originally Posted by parsonsj (Post 600288)
On the E67, the A/C request signal is via CAN request from the BCM, not a signal wire. :(
ECM fan request pins are a grounding circuit right?

dontlifttoshift 03-27-2015 01:10 PM
Quote:
Originally Posted by mikels (Post 579575)
Shroud is 609 mm wide x 585 mm tall ( 24x23 inches)

Fan itself is not much smaller.....
To anyone that has an SRX fan, can you measure the blade itself for me? Using the eyecrometer it looks like the fan itself is 20" or more but I would like to have an actual measurement.

Thanks!

samckitt 03-28-2015 11:11 AM
Has anyone found a decent price for the SRX fan? What prices are you finding?

parsonsj 03-28-2015 11:34 AM
Quote:
Originally Posted by Vince
ECM fan request pins are a grounding circuit right?
Yes, in a non-PWM setup, the fans are requested by a ground circuit.


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