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vacuum ?, please help
Posted 30 December 2003 - 08:21 PM
Posted 31 December 2003 - 12:58 AM
Posted 31 December 2003 - 02:00 AM
If it the turbo isn't isn't pumping any boost when you rev it to 2500 or so with the clutch depressed I wouldn't lose any sleep over it.
Will check my ride out tomorrow and see where the phantom vacuum line goes and post it for you. Enjoy the turbo while you have it. They are much fun.!.!
Posted 31 December 2003 - 09:34 AM
(Factory Service Manual)
The FSM shows you have some lines incorrect.
The rear of the Waste Gate Duty Solenoid, is the input and should be connected to the small nipple on the output side of the turbo.
This provides the manifold pressure to the WGDS.
On the front of the WGDS are two nipples as you describe. One sits ninty (90) degrees to the solenoid and one is straight out.
The one at 90 degrees is the output and goes to the waste gate itself. The straight out nipple goes through a small resitrictor and to the Tee you mention.
This Tee and its lines connect to varrious other soleniods and is nothing more than a "breather" system. It connects to the MAF to turbo large dia. rubber pipe and provides clean air for the connected solenoids when they are in the vent mode.
Theory - at higher altitudes the ECU can vent, through the WGDS, some of the pressure which normally goes to the wastegate. This increases the boost pressure. Thus compensating for the power lost due to thinner air/02 content.
If you want a picture of said connections please email me.
P.S. It is very difficult to achieve enough exhaust flow at rest to make the turbo produce intake manifold pressure - please connect a pressure gauge and do this testing on the road.
Hope this helps
Posted 31 December 2003 - 12:15 PM
Posted 31 December 2003 - 12:33 PM
Which manual is this?
You now state
"The hose i have right now that isn't connected to anything might be okay being left unconnected?
You should connect this to the breather system as I noted.
"The input to the wastegate solenoid still gets a direct signal from the manifold pressure so i'm wondering if it will work and if not, "
This question is a bit confusing, looking back to your original post
"The one in the back, to the wastegate"
This is the input to the Waste Gate Duty Solenoid.
It should not be connected to the waste gate, as I noted.
It should be connected to the intake manifold pressure via the small nipple on the turbo outlet housing.
You ask if I am not mistaken for the proper setup?
This line is also confusing to me
"what goes where hose is coming from on the manifold. "
I would take a picture of the "on the car system but it would be hard to see what goes where, so I "mocked up" this to show you where the lines run
Hope this helps
Posted 31 December 2003 - 01:56 PM
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