EGR Pipe

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S

stlcruiser

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Mar 29, 2003
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St. Louis Area
Greetings:

Have been running without the EGR valve for some time. I made a blocking plate for the intake and capped the exposed pipe near the firewall. I assume due to vibration, the pipe gave way and broke about 10" from the end. Now, I need to remove it where it bolts to the engine and make another blocking plate. Problem is, I can't determine where the pipe connects to. Is it possible to do this without major dismantling, and it so, how would I get to it?

Thanks,

Steve
94' 238,000
 
I've been trying to figure out a way to do this too, but can barely see the lower bolts let alone get my full size hands down in there. I really don't want to take it all apart to get to it.

If anyone has a tip, please let us know!
 
I've got my plenum off at the moment and would like to remove that harness melting pipe but for the love of god I can not see how to get it off.
 
It's finally off. Two hours and my yearly alottment of automotive directed cuss words later.
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haligen said:
It's finally off. Two hours and my yearly alottment of automotive directed cuss words later.
Click to expand...

While you were down in that area, did you change the PHH too (the short coolant hose in the bottom left of your picture, above the starter) ?

Thats the hose that usually starts to leak when you least expect it. And seeing yours has the original cotterpin clamp, I'm guessing its never been changed and has a slight bulge to it. How many miles do you have?
 
Yeah I figured I might just do the phh while I was in there. The truck is still on stands right now since I was needing a break before making the block off plates. I guess I must have an odd ball in that the truck has 206k with the original hose.

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I was more concerned about the wire harness that I wasn't paying to much attention to the hose.
ForumRunner_20111219_232517.webp
 
The pipe doesn't look broken, so I don't get why you go to all the work of removing it and installing a block off plate. You could have just capped the pipe. It doesn't get particularly hot when there is no flow.
 
I jammed a couple dimes in the EGR valve to block off the tube then I bolted it back together so it looks stock. I also used bb's in the vacuum hose. Just in case I ever have to pass emissions visual inspection.
 
Pin_Head said:
The pipe doesn't look broken, so I don't get why you go to all the work of removing it and installing a block off plate. You could have just capped the pipe. It doesn't get particularly hot when there is no flow.
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The harness was one step away from a melted mess. Figured if I wasn't using the egr and I don't have inspection I might as well declutter some while also removing a hot pipe from next to the wire harness.
 
That is a huge amount of work for a cosmetic improvement.

If the issue was the heat next to the wiring harness, then just plugging the actuator line would have cured it because the tube doesn't get that hot if there is no exhaust gas flowing through it.
 
Pin_Head said:
That is a huge amount of work for a cosmetic improvement.

If the issue was the heat next to the wiring harness, then just plugging the actuator line would have cured it because the tube doesn't get that hot if there is no exhaust gas flowing through it.
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by actuator line do you mean the vac line to the EGR valve? I looped those already, so no flow should happen, but can't the EGR valve fail and be always on and have hot exhaust flowing still?

I guess just plugging the top end of the EGR pipe would take care of it good enough though.
 
jeffro109 said:
by actuator line do you mean the vac line to the EGR valve? I looped those already, so no flow should happen, but can't the EGR valve fail and be always on and have hot exhaust flowing still?

I guess just plugging the top end of the EGR pipe would take care of it good enough though.
Click to expand...

Yes. Plugging the vac line to the EGR will keep it closed. It is possible that it may be stuck open, but you could tell from the temperature of the tube. If it is hot, the valve is open.
 
Quick fix to plug pipe

Not wanting to take the plenum off and wrestle with those bolts at the back of the head, I used one of these tapered pipe plugs. Installed in minutes. My pipe broke way down at the bottum. Threads cut into the inside of the pipe.
tapered plug.webp
 
The initial project was to redo the vacuum lines and vsv's under the plenum. I had already disabled the egr when I got the truck but the pipe became a while I was in there project.
 
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