Q: FPR & Vacuum | Ford Explorer - Ford Ranger Forums - Serious Explorations
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Q: FPR & Vacuum

92exploder4dr

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February 6, 2012
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City, State
Colorado
Year, Model & Trim Level
92 Explorer
Is the FPR suppose to have a single vacuum line coming off of it that splits into two before the tree and thus has two lines connected to the tree? Seems like that would double the vacuum pressure or is the FPR suppose to run off that?

Thank you for your time! :thumbsup:
 












MrShorty

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December 27, 2001
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City, State
Spanish Fork, UT
Year, Model & Trim Level
92 XLT and '87 Bronco II
On my '92, the other branch of that Tee went over to the air filter housing to provide vacuum for the "warm air" valve. If someone has taken that out of the system and routed the hose back to the tree, it won't hurt anything.

Seems like that would double the vacuum pressure or is the FPR suppose to run off that?
I don't have the time to explain the hydraulics/fluid mechanics of it, but it is still running off of engine vacuum. Nothing really changes with one or two vacuum lines going to the FPR.
 






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