LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Tube From Back of Intake to Exhaust???

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Old Oct 16, 2003 | 01:06 PM
  #1  
HectorM52's Avatar
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From: Duluth, GA
Tube From Back of Intake to Exhaust???

What is it? What does it do? I want to remove it, do I just plug both ends and go from there? Is there something I need to do in the PCM program to make it not throw a code or something?
Old Oct 16, 2003 | 01:10 PM
  #2  
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that is the all mighty EGR (Exhaust Gas Recircultation). You can remove it, but then you will need to block off the intake and exhaust side with plates. You have OBD1 so you will not throw a code, obd2 will.
Old Oct 16, 2003 | 01:10 PM
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thats your EGR tube. , right next to it is a vacumm activated valve that lets in exhaust gas. There was a big write up about it about a week ago. You wil need 3 block off plates to completely remove it. As for throwing a code it depends if you have OBD1 or OBD2.
Old Oct 16, 2003 | 01:15 PM
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Here is a pic of the back of the intake with the two block off plates installed after I removed my EGR system. You need one more just like the small one on the right to block off the hole in the exhaust manifold. I made the one on the right and the one for the exhaust. The big one on the left I bought from the dealer for like $6.

Last edited by GREGG 97Z; Feb 16, 2010 at 08:58 PM. Reason: personal
Old Oct 16, 2003 | 01:18 PM
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Greg,

Do you know which hoses you plugged on the side of the intake? Or is it just the ones associated with the EGR pump?

Adam
Old Oct 16, 2003 | 01:29 PM
  #6  
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Originally posted by HectorM52
Greg,

Do you know which hoses you plugged on the side of the intake? Or is it just the ones associated with the EGR pump?

Adam
I believe there was just one line that ran from the EGR vacuum solenoid to a fitting in the middle of the driver side of the intake manifold. I just removed that and plugged it with a vacuum plug.

Last edited by GREGG 97Z; Oct 16, 2003 at 03:03 PM.
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