How do I remove my pre-cat O2 sensors? - Page 2

LinkMan · 05-21-2008, 11:53 AM

Here's the link to the how-to on CEG
Duratec Upper Intake Rebuild

You probably won't have to do it all, like the injectors and LIM (Lower Intake Manifold), but at least it has the UIM bolt sequence and torques. I followed the bolt sequence, and guesstimated the torques since I didn't have a torque wrench with that range on it, and I had no problems and no leaks.

lazybum · 05-21-2008, 09:16 PM

Thanks for that. That's alot easier than i expected, actually. Only thing i need to buy is new gaskets and borrow my cousin's torque wrench. Thanks alot guys.

lazybum · 05-25-2008, 02:52 PM

Got the code read today. Bad EGR valve. Oh well, easy enough to replace.

skater · 05-25-2008, 04:31 PM

Quote:

Originally Posted by lazybum

Got the code read today. Bad EGR valve. Oh well, easy enough to replace.

What code was it? Frequently EGR codes are actually caused by a bad DPFE.

lazybum · 05-25-2008, 11:08 PM

Not too sure what the code was, the guy at auto-zone (where i got the code read) just told me that the flow to the ERG was insufficient. And then showed me that it said that, so yea.

Charcoal · 05-25-2008, 11:57 PM

insuffient flow doesn't necessarily mean a bad egr..could need the path cleaned coming from the throttle body over to the egr..or a bad dpfe..you would be amazed in the difference just by cleaning that path..I would try that before buying a new EGR and still possibly having the same problem..

Here is a link to a thread talking and showing about cleaning that path.. http://www.newcougar.org/forums/showthread.php?t=122352

MOMO · 05-26-2008, 08:06 AM

Quote:

Originally Posted by lazybum

Not too sure what the code was, the guy at auto-zone (where i got the code read) just told me that the flow to the ERG was insufficient. And then showed me that it said that, so yea.

cleaning the UIM like your supposed to should clear out all the path to the EGR.

skater · 05-26-2008, 08:18 AM

EGR insufficient flow is frequently (not always, but usually) the sign of a bad DPFE.

05-21-2008, 11:53 AM	#11 (permalink)
LinkMan Won't settle 4 quick fix Join Date: Feb 2001 Location: Hilliard, OH Posts: 3,093 Images: 11	Re: How do I remove my pre-cat O2 sensors? Here's the link to the how-to on CEG Duratec Upper Intake Rebuild You probably won't have to do it all, like the injectors and LIM (Lower Intake Manifold), but at least it has the UIM bolt sequence and torques. I followed the bolt sequence, and guesstimated the torques since I didn't have a torque wrench with that range on it, and I had no problems and no leaks. __________________ Mark (AIM:LaserRedCat) 2001 Laser Red Cougar* V6 ATX (99 Rio Red R.I.P.)* * Ohio NECO * When I'm in my car, I look good. CF 2005 Best Stock - CF 2006 Best Paint (tie) / 2nd Cleanest - CF 2007 Cleanest Cougar - CF X 2nd Cleanest 1998 T.Red Contour* V6 ATX* FCO Thinkin' I need four doors. Still not working... 1997 Medium Willow Taurus* 3.0 OHV ATX* TCCA I just maintain it for the wife 1993 Bright Red Tempo* 2.3 ATX* Kept Laser Red's paint shiny RIP 23 Nov 2007

05-21-2008, 09:16 PM	#12 (permalink)
lazybum NECO Member Join Date: May 2008 Posts: 29	Re: How do I remove my pre-cat O2 sensors? Thanks for that. That's alot easier than i expected, actually. Only thing i need to buy is new gaskets and borrow my cousin's torque wrench. Thanks alot guys.

05-25-2008, 02:52 PM	#13 (permalink)
lazybum NECO Member Join Date: May 2008 Posts: 29	Re: How do I remove my pre-cat O2 sensors? Got the code read today. Bad EGR valve. Oh well, easy enough to replace.

05-25-2008, 11:08 PM	#15 (permalink)
lazybum NECO Member Join Date: May 2008 Posts: 29	Re: How do I remove my pre-cat O2 sensors? Not too sure what the code was, the guy at auto-zone (where i got the code read) just told me that the flow to the ERG was insufficient. And then showed me that it said that, so yea.

05-25-2008, 11:57 PM	#16 (permalink)
Charcoal NECO Member Join Date: Jan 2007 Location: Memphissippi Posts: 300	Re: How do I remove my pre-cat O2 sensors? insuffient flow doesn't necessarily mean a bad egr..could need the path cleaned coming from the throttle body over to the egr..or a bad dpfe..you would be amazed in the difference just by cleaning that path..I would try that before buying a new EGR and still possibly having the same problem.. Here is a link to a thread talking and showing about cleaning that path.. http://www.newcougar.org/forums/showthread.php?t=122352 Last edited by Charcoal; 05-26-2008 at 12:17 AM.

05-26-2008, 08:18 AM	#18 (permalink)
skater Capital Curmudgeon Join Date: Aug 2003 Location: Bowie, MD Posts: 6,244 Images: 3 Blog Entries: 1	Re: How do I remove my pre-cat O2 sensors? EGR insufficient flow is frequently (not always, but usually) the sign of a bad DPFE. __________________ 1999 Cougar, Laser Red, 2.5L V6, MTX / 2004 Impala, Superior Blue, 3.4L V6, ATX / 1991 Airstream B190 7.5L V8

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