Does anyone know offhand the exact routing of the two vacuum lines that come from the fitting underneath the coil bracked? I ran one to the egr valve and the other to the front of the tb. Is this correct? Thanks a lot.

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89 Iroc-Z LB9 305 TPI auto 2.73 posi:
3" Dynomax "cat" back,K&N filters, TB bypass, 3" pipe in place of cat, cleaned and flow-matched injectors, 180' thermo, mild ignition mods, synthetic oil, kicker sound system, soon to attempt engine swap...

 

U ROCK,

That should be the EGR solenoid. One line goes to the EGR, the other to the timed vacuum source on the underside of the TB. The port that connects the EGR also gets vented to atmosphere when the solenoid shifts closed, so the position of the hoses matters. As long as you have the correct hose on the source port, there should be no vacuum leaks and sticking-open EGRs.

It sounds like you have the connections right.

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Later,
Vader
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"No matter how hard you try you can't stop us now"
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Thanks for the help - I'm on my way to the parts store solenoid and hoses in hand to get some regular hose for this thing.

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89 Iroc-Z LB9 305 TPI auto 2.73 posi:
3" Dynomax "cat" back,K&N filters, TB bypass, 3" pipe in place of cat, cleaned and flow-matched injectors, 180' thermo, mild ignition mods, synthetic oil, kicker sound system, soon to attempt engine swap...