BAP/MAP Sensor on 91 GT Supposed to have Vacuum Line?

91StangGT5.0

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Oct 21, 2009

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Mar 15, 2010

#1

• Mar 15, 2010

• #1

Does the BAP/MAP Sensor require a vacuum line to be ran to it? If there isn't one could it cause idle problems as well as any other problems? Also is the EGR valve vacuum line supposed to run straight to the EGR Pressure Regulator or does it go to the 4 way vacuum connection by the passengers side header?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Mar 15, 2010

#2

• Mar 15, 2010

• #2

The BAP does not have a vac line (it senses atmospheric pressure, not manifold pressure).

The EGR vac line will go directly to the EGR solenoid, though it may be routed through a connector on its way. I have SN95's on the brain and they have such a connection. But the vac pathway itself goes directly to the solenoid (if the EGR is connected to manifold vacuum by accident, the car won't idle for crap).

 

91StangGT5.0

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Oct 21, 2009

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Mar 15, 2010

#3

• Mar 15, 2010

• #3

No my EGR Valve vacuum line goes to the 4 way block connector but does not route to the EGR Regulator Solenoid.

This is a pic of my EGR Valve Vac Line (Black Line going into connector). The Black Line coming out from the bottom isn't connected to anything. It's not even going to the right hole in the connector. Which hole does it mate to? The one with the Green or Red Line from the bottom?

 

Saleen0679

10 Year Member

Apr 14, 2005

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Yakima, WA

Mar 15, 2010

#4

• Mar 15, 2010

• #4

The vacuum line from the EGR valve goes to the opposing green line. You should have another vacuum line coming from the backside of the upper intake to the opposing red line.

 

Kdubslugga

Active Member

Jun 7, 2003

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Akron, OH

Mar 16, 2010

#5

• Mar 16, 2010

• #5

No, your MAP sesor will not have a Vac line going to it, Only Speed Density cars have a vac line to it 88 and older!!!