C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Vacuum Line Question

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Old Jul 4, 2013 | 01:46 PM
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Default Vacuum Line Question

I was replacing my fuel injectors with a set of Jon's Bosch III's when I noticed a broken vacuum line. Standing on the passenger side to the right of the two rear injectors are two ports on the intake. The bottom one goes around the rear and hooks to the Fuel Pressure Regulator. The top one goes into a duel outlet check valve and one line disappears into a plastic harness and the other heads off somewhere else. The one that disappears into the harness was broken off. Does anyone know what this goes to? I bought a replacement valve at AdvanceAuto for a couple of bucks which seems to be a direct replacement but, I really would like to know what wasn't working because of the broken line.

P.S. Sorry forgot. 96' coupe, automatic, electronic A/C

Last edited by Klyde; Jul 4, 2013 at 02:07 PM.
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Old Jul 4, 2013 | 02:01 PM
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Mine goes to the climate control on the dash. See if you can cycle dash vents,heater , and defroster. If it stays on defroster that is your vacuume line.
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Old Jul 4, 2013 | 02:11 PM
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I have it fixed now but was wondering what I fixed. I have no ideal how long it was broke off. Up till now I have had no A/C related problems. I will however check and see. I always leave it on auto and never try to select anything else. Thanks for the reply.
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Old Jul 6, 2013 | 12:51 PM
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One of those vacuum lines also goes to the cruise control.
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