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HELP!!DOES my 90 TPI MAP have a vacuum line that goes to it?

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Old Jan 6, 2007 | 06:32 PM
  #1  
87turboGN's Avatar
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From: new port richey,fl
HELP!!DOES my 90 TPI MAP have a vacuum line that goes to it?

Putting car back together,can't seem to remember if my map had a vacuum line to it...everything else is hooked up right except a line that goes back into the loom toward the AC box and im assuming that is for the ac vent and whatnot..help me please,the stupid vacuum diagrams don't show a line to the MAP,thank you
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Old Jan 6, 2007 | 07:36 PM
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From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
your right, it doesn't show a vacuum hose going to the MAP.
it does have to have one.
here is a pic of a 92 TPI, its a little differnt but it should be close enough.
Attached Thumbnails HELP!!DOES my 90 TPI MAP have a vacuum line that goes to it?-map.jpg  
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Old Jan 6, 2007 | 07:44 PM
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From: new port richey,fl
Thanks alot..i'm still up in the air though......Do i just hook it to one of the ports right behind it?Does the fact that i am speed density affect anything?

Last edited by 87turboGN; Jan 6, 2007 at 07:49 PM.
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Old Jan 6, 2007 | 08:08 PM
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From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
it goes right to one of the ports on the plenum
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Old Jan 7, 2007 | 12:19 AM
  #5  
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From: new port richey,fl
one port goes to hvac and one to fpr..where does Map go????
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Old Jan 7, 2007 | 05:21 AM
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From: houston
Car: 83 POS monte carlo 2015 chevy P/U
Engine: 92 5.7 tpi 5.3
Transmission: 700r4 6L60E
Axle/Gears: 2.42 too high
i came off the vacuum port & put a T in the hose, one side goes to the MAP sensor & the other side goes to the hvac hose.
you do not want to T off the FPR for anything, if it starts leaking it would kill the MAP sensor or pump fuel inside the car if it was Teed into the hvac.
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