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small red hose from firewall?? small red hose from firewall??
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  #1  
Old 11-07-2009, 07:12 PM
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small red hose from firewall??
I was changing my sparkplugs on my 94 f150 302 and I broke a small red plastic hose. It starts at a can shaped thing on the firewall curbside and then runs behind the motor with a green line the come from the egr. Basically I would like to know what I just broke and what is my truck going to do when I start it up?

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Old 11-07-2009, 07:15 PM
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the can thing say siemens on it with an arrow...
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  #3  
Old 11-07-2009, 07:19 PM
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Join Date: Mar 2001
Location: Seabrook,NH
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Vacuum accumulator for hvac
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Old 11-07-2009, 07:28 PM
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so is that going to make it operate differently? I'm in SD dont need ac at the moment.
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Old 11-07-2009, 09:44 PM
glc glc is offline
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You will probably have a vacuum leak. You can splice it with a length of standard vacuum hose.
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  #6  
Old 11-08-2009, 11:52 AM
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Most likely will have a rough idle and your blend door will not move so your heat and ac settings will be wrong. Glc is correct.
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  #7  
Old 11-11-2009, 10:47 AM
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Location: Memphis, TN, USA
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Read the vacuum map on the emissions sticker under the hood. Red is the vacuum line from the intake manifold to the reservoir (coffee can), so you'll have a vacuum leak (high idle, dirty air into the engine). That reservoir is for the 2ndry air system; the HVAC reservoir is glued to the evaporator cover, under the foil-faced fabric.

.

You can fix it just like this:

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