Vacuum under TB?
Thread Starter
Intermediate
Joined: Jan 2003
Posts: 30
Likes: 0
Vacuum under TB?
Can anyone tell me where the vacuum line uner the TB is supposed to be hooked up to? I have converted to a Holley stealthram, And dont remember if this line needs a source, or if it is a source that needs to be hooked to something? Thanks in advance
Melting Slicks
Joined: Jun 2002
Posts: 2,168
Likes: 16
From: Phoenix AZ
Re: Vacuum under TB? (30th b-day)
The vaccum line under the TB on my '86 goes to a solenoid on the intake manifold just behind the thermostat housing. There is another vacuum line coming out of this solenoid which controls opening and closing of the EGR valve. So I guess it the connection under the TB would have to be a vacuum source. :seeya
[Modified by vetracer, 6:18 PM 5/6/2003]
[Modified by vetracer, 6:18 PM 5/6/2003]
Thread Starter
Intermediate
Joined: Jan 2003
Posts: 30
Likes: 0
Re: Vacuum under TB? (lead_foot)
So far it is running ok, but I have only just finished doing the cam break-in. Haven't had it on the street yet, but I am not worried about it. The guy that did my chip said that he could take out the signal or whatever, if I didn't want it there. So far no codes going off.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Re: Vacuum under TB? (30th b-day)
It is a vacuum source for the EGR (through the electically operated solenoid) and to the vacuum operated valves on the fuel vapour system in the driverside front wheelwell. I think it may be ported vacumn as the constant vacuum ports(for the FPR ) are located at the rear of the manifold. '87