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Old 02-03-2020, 12:39 PM   #1
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Join Date: Nov 2016
Location: Santa Cruz, CA
Default Which 2.4 ECU have fan control?

I am trying to wire up an electric fan and found out that on the 940s the ECU would control the fan on pins 10 and 11.
Which ECU part numbers had fan control on pins 10 and 11?

I have tried the pins on my 951, which doesn't seem to do anything. I have a 937 lying around. Would that do the trick?
1967 122s, carbed B20F, M41, the sports tractor
1998 S70, grandma-mobile
1989 240 B230F, V15 cam, chipped EZK, M47 swap (Lost a fight with a Chevy express van), the millenial falcon
2012 VW Tiguan (screw plastic water pumps), daily
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Old 02-03-2020, 01:27 PM   #2
Mark G
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Location: Vermont

Based upon discussions in this thread, I'd give the 937 a try.

Sold: 1981 242 DL
Parted and crushed: 1990 245 DL
1993 245 DL

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Old 02-03-2020, 01:34 PM   #3
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Location: Rushing Lane, Scappoose, OR

Yeah the 951 doesn't have the efan control because it is a 240 ECU and those never ever had efan. It's a 9xx that doesn't do efan. Any other 740 or 940 ECU that is 9xx should have efan control.

The way to tell for sure is pop the top off the ECU and there is a certain area that has a chip or two that is suposed to be soldered onto the board and if it's there yes it has efan control. If not, like on the 951 it's missing from the spot, then no efan control.
1988 245 White slicktop M47 Wagon! 93 b230f. LH 2.4 STS flat flywheel.
1990 745 B230FT Getrag JohnV flywheel 240mm clutch 13c A-cam 3.54 G80 548K
1991 740SE B230FT NPR Strut braces IPD bar A cam 550cc EV14's. 3.73 G80 M90 to put in.
1995 940 White racing wagoon. 13c m90 to put in
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