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1994.5 - 1997 7.3L Power Stroke Diesel  

can someone identify this?

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Old Oct 8, 2008 | 12:57 PM
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can someone identify this?

on the bottom of the (wastegate?) on the left side of the turbo there is a sliding plate with a threaded coupler? swinging from it. i think there is a rod it should be connected to but for the moment it is covered in grease and grime so i won't be positive till i clean it. does this open and close the wastegate? and i apoligize if i am completely wrong about it. my first turbo and i am still very green.


in this pic you can see it under the downpipe to the left of the lift ring.




in this pic it is hanging dead center and you can see the rod on the right.





thanks
 
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Old Oct 8, 2008 | 01:03 PM
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That is the exaust back pressure valve

Can you still move it back & forth?...
 
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Old Oct 8, 2008 | 01:05 PM
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BTW OBS's don't have wastegates.
 
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Old Oct 8, 2008 | 01:06 PM
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yes it moves freely about 45 degrees total
 
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Old Oct 8, 2008 | 01:09 PM
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and where is this red vaccuum line going to a wastegate canister? i read in another thread you can remove it and gain a few lbs of boost without hurting a stock motor.
 
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Old Oct 8, 2008 | 01:13 PM
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Originally Posted by Neal 97 250
BTW OBS's don't have wastegates.
ahhhh. that's probably why i can't find the vac line.

should the connector be on that rod? is there a certain length it needs to be on the rod?
 
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Old Oct 8, 2008 | 01:24 PM
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If you want the EBPV to work ,it needs to be hooked up ..

Mine has been wired open since I got the truck .(PO)

looking down from the top ,,all the way clockwise is open ...
 
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Old Oct 8, 2008 | 01:31 PM
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what does this valve do? (as my newbieness shines through!)
 
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Old Oct 8, 2008 | 01:37 PM
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The Exhaust Back Pressure Valve is designed to hold the exhaust gases in the engine and exhaust manifolds during cold weather to help warm the engine faster. They are known for causing problems from sticking shut causing drop in power and mileage, not to mention a strange sound from under the hood. Most people wire them open in order to eliminate the problem, or the possiblilty of the problem. The EBPV really makes little difference in how quick the engine warms up. Some wire them up and make an exhaust brake out of them. There are some posts on this site that can tell you how to do that.
 
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Old Oct 8, 2008 | 01:42 PM
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thanks! .
 
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