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Virtual Hose Diagram Posted by Bill Homer [Email] (#3427) [Profile/Gallery] (more from Bill Homer) on Tue, 24 Mar 2009 12:26:30 In Reply to: Hose Diagram?, Avispex, Tue, 24 Mar 2009 09:16:31 Members do not see ads below this line. - Help Keep This Site Online - Signup |
If your car does not have Traction Control System, the vacuum hose routing is very simple. Replace all three pieces that are under the hood; you will probably find that at least one is rotten:
1. from turbo bypass valve to "Y" connector behind throttle body (about 3 - 4 feet long)
2. from intake manifold to "Y" connector behind throttle body (about 15 inches long)
3. from connector just inside the false firewall to the "Y" connector (about 15 inches long). You probably need to remove the long black plastic cover over the false firewall (a.k.a. the "aquarium cover") to find the connector for a tube that passes through the actual firewall which eventually goes to the turbo gauge through another piece of hose.
The hoses under the dashboard are not subject to the same heat as those under the hood, and are less suspect (I have not replaced these on my 1994 car).
One other frequent source of leaks is a 1/2-inch brass tube fitting under the intake manifold near the throttle body. Eventually, these fall out and can be reattached by cleaning up and using JB Weld epoxy for metals.
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