Coffee Can

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Jul 16, 2007 | 02:37 PM

kxbronco

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Coffee Can

I've got a question about the coffee can. I've got an 87 F150 with the 300 six cylinder. After running it for a while when its hot outside, I turn it off and after a few minutes this fan starts running (sounds like a fan at least). The sound appears to be coming from the coffee can. There is a plug next to the coffee can and if I unplug it the fan noise stops. What's up with this? I'm not much of a mechanic (actually just a wanna be mechanic), but if the coffee can is some kind of vaccum thing, why does it start running after I turn the truck off? It doesn't do this every time. Seems like heat may have something to do with it.

TIA
Chris

Jul 16, 2007 | 04:09 PM

EPNCSU2006

Lead Driver

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From: Concord, NC

What you are hearing is a fan used to cool the injectors. Ford thought it was necessary for some reason, possibly a vapor lock issue. You are right on about it being heat related.

Jul 18, 2007 | 06:22 AM

nugecrazy

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From: Brooklyn, Mi

You have a vaccum leak. Unless you have cruise control you can connect the 2 hoses together and bypass the can.

Jul 18, 2007 | 06:29 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

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From: Simi Valley, CA

The "Coffee Can" actually a vacuum reservoir, tends to leak around the edges of the vacuum port where it attaches to the can. Adding a bead of epoxy fixes the sssssssssssss.

Jul 18, 2007 | 06:53 AM

EPNCSU2006

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From: Concord, NC

It's the cooling fan for the injectors and fuel rail, not a vacuum leak. If it were a vacuum leak, it would not take a few minutes to start making noise, and it would not stop when the wires were unplugged.

Jul 18, 2007 | 10:55 AM

quicklook2

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Joined: May 2004

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From: Lakewood, Ohio

yep, its the cooling fan.

Jul 19, 2007 | 11:24 AM

kxbronco

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Thanks for the input guys. I figured it was supposed to do that, but wanted to check. If freaks my wife out when she walks by it and the fan is running.