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Serious Vacuum leak

JSpence

Member
Joined
October 12, 2007
Messages
17
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0
City, State
Oak Harbor, WA
Year, Model & Trim Level
1991 Explorer XLT
I have several vacuum lines that are in bad shape. My haynes repair manual doesn't give me any vacuum line layout. Any information and links would be great.
 
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Joe Dirt

Explorer Addict
Joined
October 4, 2007
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Year, Model & Trim Level
07 Camry
I've not seen vac layout diagrams. Couldn't you replace them one at a time as you take them off and then you wouldn't need a layout? I'd say the only place it may be is in the factory service manuals.
 
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dogfriend

Human-Animal Hybrid
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City, State
Carmichael, CA
Year, Model & Trim Level
'97 Sport 4x4

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MrShorty

Explorer Addict
Joined
December 27, 2001
Messages
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City, State
Spanish Fork, UT
Year, Model & Trim Level
92 XLT and '87 Bronco II
I know I posted this list a while ago. Here's what's on my '92, and your '91 should be similar. You should have vacuum lines going to:

1) Automatic transmission (if equipped).
2) Cruise control (if equipped)
3) brake booster
4) fuel pressure regulator
5) air filter housing
6) vacuum reservoir and HVAC system (1-6 coming off of vacuum tree at rear of intake)
7) PCV valve (separate nipple)
8) EVAP system (likely off of throttle body)
 
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JSpence

Member
Joined
October 12, 2007
Messages
17
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City, State
Oak Harbor, WA
Year, Model & Trim Level
1991 Explorer XLT
Thanks for the replies it should help a bunch.
 
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