• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

EGR tube removal - how and why?

  • Thread starter Thread starter teefaw
  • Start date Start date Sep 26, 2006

teefaw

New Member
Sep 19, 2006
4
0
0
Sep 26, 2006
#1
  • Sep 26, 2006
  • #1
This may save you some time if you ever decide to replace you NPI intake manifold with a PI unit - or in my case, if you ever have to replace the intake because the stupid plastic coolant crossover cracked .

On Saturday I (successfully ) fitted a new PI intake manifold to my 98 GT. However, it took me nearly 3 hours to remove and replace the coolant tube from the 'valley' because; first I wasted so much time trying, unsuccessfully, to disconnect the EGR tube from the left (or right, depending upon which useless manual you read) exhaust manifold; and second, unbolting the coolant tube bracket from the back of the block with the EGR tube in situ is a real b**ch!

So, does anyone know how to remove the EGR tube?

No - then just forget it! Don't put the car on jackstands and don't even try take it off . Accept that it will take you about half an hour to extract a 13mm and (possibly) a 10mm bolt from the back of the block in order to get rid of the old coolant tube and another 10 to 15 minutes to bolt the new tube in place. You're still better of by nearly 2 hours .

Oh, you'll also need a trusty assistant, like my son , to 'ease' the EGR out of the way as you carefully lower your new PI intake into place without disturbing the gaskets and the strategically-placed beads of RTF.

An NPI replacement would have been so much easier - but not nearly as satisfying .
 

jasonh_86

I
May 20, 2005
1,156
2
48
Arkansas
Sep 26, 2006
#2
  • Sep 26, 2006
  • #2
I ditched my EGR.

I unhooked the vacuum lines. Unbolted it from the plenum and the exhaust manifold (or header). Then removed the electonic module that sits up there and plugs into it.
 

jstreet0204

Active Member
Jun 26, 2003
939
0
36
Winston Salem, NC
Sep 26, 2006
#3
  • Sep 26, 2006
  • #3
I'm not sure if you are asking a question, or just stating your difficulty.
Anyway, the bolt on the back goes much easier with a 13mm racheting end wrench. I bought one specifically for that bolt, and has come in handy many times since.

As for the EGR, there is no huge improvement from removing the egr. You'll get less carbon builtup in the intake, and you'll have less heat transfer to the plenum. The down side is less fuel economy, and higher intake temps during normal driving. To remove it you need a block off plate, and it need to be turned off in the EEC.
 
M

Mel96GT

New Member
Aug 31, 2004
255
1
0
San Diego
Sep 26, 2006
#4
  • Sep 26, 2006
  • #4
Do not try to unscrew the EGR tube, it is literaly welded on. Just remove the two bolts holding the whole assembly from the side of the plenum. When you install the manifold just move the tube assembly around. You can even re-use the old gasket just use a high-temp sealant. Like I said in another thread, I've replaced 2 NPI intakes this way with no problems. Good luck.
 

jivepepper

Founding Member
Jun 19, 2002
776
5
18
Under a Sombrero. in WV.
Sep 27, 2006
#5
  • Sep 27, 2006
  • #5
Mel96GT said:
Do not try to unscrew the EGR tube, it is literaly welded on. Just remove the two bolts holding the whole assembly from the side of the plenum. When you install the manifold just move the tube assembly around. You can even re-use the old gasket just use a high-temp sealant. Like I said in another thread, I've replaced 2 NPI intakes this way with no problems. Good luck.
Click to expand...


Mine wasn't welded?
 
M

Mel96GT

New Member
Aug 31, 2004
255
1
0
San Diego
Sep 27, 2006
#6
  • Sep 27, 2006
  • #6
jivepepper said:
Mine wasn't welded?
Click to expand...


I know, that is why I said "literaly welded". That threaded connection just bonds itself together.
 

teefaw

New Member
Sep 19, 2006
4
0
0
Sep 27, 2006
#7
  • Sep 27, 2006
  • #7
jstreet0204 said:
I'm not sure if you are asking a question, or just stating your difficulty.
Anyway, the bolt on the back goes much easier with a 13mm racheting end wrench. I bought one specifically for that bolt, and has come in handy many times since.

As for the EGR, there is no huge improvement from removing the egr. You'll get less carbon builtup in the intake, and you'll have less heat transfer to the plenum. The down side is less fuel economy, and higher intake temps during normal driving. To remove it you need a block off plate, and it need to be turned off in the EEC.
Click to expand...
Thanks - it was a difficulty rather than a question but I do need to expand my tool set and a ratcheting wrench would have done the trick. However, as I said, there was another 10mm bolt holding the bracket in place too - about 2 inches lower down. The literature I read said not all brackets have 2 bolts - but mine did!
 
You must log in or register to reply here.

Similar threads

1
Engine Motor swap from a 2003 Explorer
  • 1996mustang new
  • Oct 9, 2025
  • SN95 4.6L Mustang Tech
Replies
7
Views
601
SN95 4.6L Mustang Tech Oct 16, 2025
squeak93
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
515
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
SURGING IDLE / NO IDLE CHECKLIST FOR 1999–2004 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
909
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
SURGING IDLE / NO IDLE CHECKLIST FOR 1996–1998 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
742
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
Engine 1990 LX 5.0L EFI Mustang Fuel Management Problems - HELP!
  • 5.0LXStanger
  • May 25, 2025
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
45
Views
2K
Fox 5.0 Mustang Tech Jul 11, 2025
5.0LXStanger
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?