Who knows what this is ????? HELP! - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 11-20-2013, 01:50 AM Thread Starter
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Who knows what this is ????? HELP!

I was messing around under my hood because my heater stopped working, no blower, or heat. I may have pulled what I think to be a vac line out, It comes from some fuse type looking thing behind the battery on the passenger side. If someone knows what this is that would be amazing, And best case scenario it could be why my heats not working ?
(-40c outside)
-I'm a newb to 7.3's try not to be to harsh.
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post #2 of 2 Old 11-30-2013, 05:11 PM
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The "fuse type looking thing" may be the resistor switch for the heater/fan control circuit... the line shown may be a vacuum control or electrical control line for the switch...could also be a drain line .... not too sure, but I do know that water and snow/debris have a tendency to leak down through the weather stripping between the passenger side rear hood firewall area and allows water to get into the heater control switch and causes it to short out.

Wish I had a little more detailed information for you, but maybe someone else can chime in.
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