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fansw49l.jpg Injector Cooling Fan Switch (170 degF) for '87-89 4.9L only STEMCO 431-5040 F170 89019A Below 170degreesF, it's open (OFF); above, it's closed (ON). Neither wire is connected to the brass face (NOT grounded), but it can be wired up that way if necessary. See also: [url=https://www.supermotors.net/vehicles/registry/media/894689][img]https://www.supermotors.net/getfile/894689/thumbnail/intakei6efi.jpg[/img][/url] . [url=https://www.supermotors.net/vehicles/registry/media/894690][img]https://www.supermotors.net/getfile/894690/thumbnail/injectorblower.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/544458][img]https://www.supermotors.net/getfile/544458/thumbnail/injectorblower.jpg[/img][/url]
fansw49l.jpg | Hits: 5499 | Posted on: 4/12/08 | View original size (341.32 KB)

Injector Cooling Fan Switch (170 degF) for '87-89 4.9L only
STEMCO 431-5040 F170 89019A

Below 170degreesF, it's open (OFF); above, it's closed (ON). Neither wire is connected to the brass face (NOT grounded), but it can be wired up that way if necessary.

See also:
. .