Front o2 sensor access - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus SVT > Focus SVT

Focus SVT The place to chat about general questions, window tinting, exterior body, interior and lighting upgrades for the MK1 2002-2004 Focus SVT.

Search This Forum | Image Search | Advanced Search    
FocusFest

Reply
 
LinkBack Thread Tools Display Modes
Old 12-04-2017, 12:57 PM   #1
Focus Rookie
 
Join Date: Nov 2017
Fan#: 378514
Location: Upstate, NY
What I Drive: 2016 Fiesta ST and 2004 SVT Focus

Posts: 9
Points 42, Level 1
Points: 42, Level: 1 Points: 42, Level: 1 Points: 42, Level: 1
Level Up 84% Completed
Level up: 84% Level up: 84% Level up: 84%
Forum Activity 4%
Activity: 4% Activity: 4% Activity: 4%
FF Reputation: 1 TERAWR Good Standing Member
Buy-Sell-Trade Rating: (0)
Front o2 sensor access

Hey all, it's starting to look like I've got a project SVTF, it's got a bad primary o2. I've done other vehicles in the past but I've never seen one this entrapped in my life, I can't disconnect the flange pre-cat because of rust and the old one just kind of fell apart when I went to get a feel for it.

I guess what I'm asking is if there's a trick to get the old o2 sensor out or should I be looking at alternatives?


TERAWR is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-04-2017, 05:08 PM   #2
Trump 2016
 
pasta's Avatar
 
Join Date: Jan 2009
Fan#: 62350
Location: queens, NY
What I Drive: 2013 Focus ST3

Posts: 12,933
Points 32,645, Level 100
Points: 32,645, Level: 100 Points: 32,645, Level: 100 Points: 32,645, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 11 pasta Great Standing Member
Buy-Sell-Trade Rating: (55)
What do you mean by entrapped.
pasta is offline  
    Reply With Quote Quick reply to this message
Old 12-04-2017, 07:15 PM   #3
Focus Rookie
 
Join Date: Nov 2017
Fan#: 378514
Location: Upstate, NY
What I Drive: 2016 Fiesta ST and 2004 SVT Focus

Posts: 9
Points 42, Level 1
Points: 42, Level: 1 Points: 42, Level: 1 Points: 42, Level: 1
Level Up 84% Completed
Level up: 84% Level up: 84% Level up: 84%
Forum Activity 4%
Activity: 4% Activity: 4% Activity: 4%
FF Reputation: 1 TERAWR Good Standing Member
Buy-Sell-Trade Rating: (0)
Meaning there is zero room on the top side of the cat to get a wrench onto it.

It would make sense to disconnect the flange at the end of the header but there's rust belt cancer holding it together. So, I'd have to torch off the nuts to get it apart there.

I'd prefer any other solution.
TERAWR is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-04-2017, 10:32 PM   #4
Trump 2016
 
pasta's Avatar
 
Join Date: Jan 2009
Fan#: 62350
Location: queens, NY
What I Drive: 2013 Focus ST3

Posts: 12,933
Points 32,645, Level 100
Points: 32,645, Level: 100 Points: 32,645, Level: 100 Points: 32,645, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 11 pasta Great Standing Member
Buy-Sell-Trade Rating: (55)
Trying to help so dont take anything the wrong way. You know there is a special tool to remove 02 which I have done before. Yes it's tight but works.
pasta is offline  
    Reply With Quote Quick reply to this message
Old 12-05-2017, 04:06 AM   #5
Focus Addict
 
Byron King's Avatar
 
Join Date: Jan 2017
Fan#: 341354
Location: Mount Vernon, OH
What I Drive: 2004 Competition Orange SVTF

Posts: 1,214
Points 2,703, Level 31
Points: 2,703, Level: 31 Points: 2,703, Level: 31 Points: 2,703, Level: 31
Level Up 69% Completed
Level up: 69% Level up: 69% Level up: 69%
Forum Activity 8%
Activity: 8% Activity: 8% Activity: 8%
FF Reputation: 5 Byron King Good Standing Member
Buy-Sell-Trade Rating: (0)
A normal style O2 socket won't work. I borrowed a snap on set from a guy and it had a tool that was short and had a spot for a 3/8ths ratchet to attach to. I could do like 1/16ths of a turn before having to reposition it, but once I got it loose enough it turned easy with an open end wrench. It wasn't too difficult, just took some time. Luckily I have had my exhaust apart and I put all new bolts in it so I could have pulled it off if I had to, but trying to get the cat to flex pipe bolts on is not easy.
__________________
Quote:
crazy how something so simple can be over looked and cause so much trouble
Byron King is offline  
    Reply With Quote Quick reply to this message
Old 12-05-2017, 06:28 AM   #6
Focus Rookie
 
Join Date: Nov 2017
Fan#: 378514
Location: Upstate, NY
What I Drive: 2016 Fiesta ST and 2004 SVT Focus

Posts: 9
Points 42, Level 1
Points: 42, Level: 1 Points: 42, Level: 1 Points: 42, Level: 1
Level Up 84% Completed
Level up: 84% Level up: 84% Level up: 84%
Forum Activity 4%
Activity: 4% Activity: 4% Activity: 4%
FF Reputation: 1 TERAWR Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by Byron King View Post
A normal style O2 socket won't work.
That's the key! I've only got a normal o2 socket, I guess I'll go down to the local AZ and see if I can borrow the kit. Worse comes to worse I'll just weld a bung on in a more accessible area, I'd prefer not to though.
TERAWR is offline  
    Reply With Quote Quick reply to this message
Old 12-05-2017, 01:35 PM   #7
Focus Addict
 
Byron King's Avatar
 
Join Date: Jan 2017
Fan#: 341354
Location: Mount Vernon, OH
What I Drive: 2004 Competition Orange SVTF

Posts: 1,214
Points 2,703, Level 31
Points: 2,703, Level: 31 Points: 2,703, Level: 31 Points: 2,703, Level: 31
Level Up 69% Completed
Level up: 69% Level up: 69% Level up: 69%
Forum Activity 8%
Activity: 8% Activity: 8% Activity: 8%
FF Reputation: 5 Byron King Good Standing Member
Buy-Sell-Trade Rating: (0)
This is what it looked like, be careful not to round it off or you'll be dealing with more trouble. Lots of PB plaster always helps also. Good luck!
Attached Images
 
__________________
Quote:
crazy how something so simple can be over looked and cause so much trouble
Byron King is offline  
    Reply With Quote Quick reply to this message
Old 12-05-2017, 03:55 PM   #8
Focus Jr. Enthusiast
 
Join Date: Dec 2014
Fan#: 209978
Location: Houston, TX
What I Drive: 2004 SVT, Silver EAP

Posts: 30
Points 435, Level 8
Points: 435, Level: 8 Points: 435, Level: 8 Points: 435, Level: 8
Level Up 70% Completed
Level up: 70% Level up: 70% Level up: 70%
Forum Activity 3%
Activity: 3% Activity: 3% Activity: 3%
FF Reputation: 1 SVT_Euro_04 Good Standing Member
Buy-Sell-Trade Rating: (0)
I had a lot of trouble with my SVT sensors. Somehow the exhaust moved around enough that they were crushed against the bottom of the engine by the movement. I ended up using vice-grips to clamp on to the body of the sensor. However, before using the vise-grips I would try a crowfoot wrench. That was the only thing I could find that would grab the rear sensor for the install.

The other thing to note is some aftermarket sensors may be larger in diameter than oem. I think that was part of my problem. I ended up using NTK, which I think are smaller in diameter (did not do a direct comparison). They seem to be working fine. I also replaced the dogbone engine mount. So far so good.
__________________
2004 SVT ZX3 EAP, silver, 91k
SVT_Euro_04 is offline  
    Reply With Quote Quick reply to this message
Old 12-05-2017, 04:57 PM   #9
Trump 2016
 
pasta's Avatar
 
Join Date: Jan 2009
Fan#: 62350
Location: queens, NY
What I Drive: 2013 Focus ST3

Posts: 12,933
Points 32,645, Level 100
Points: 32,645, Level: 100 Points: 32,645, Level: 100 Points: 32,645, Level: 100
Level Up 0% Completed
Level up: 0% Level up: 0% Level up: 0%
Forum Activity 0%
Activity: 0% Activity: 0% Activity: 0%
FF Reputation: 11 pasta Great Standing Member
Buy-Sell-Trade Rating: (55)
Yes

Quote:
Originally Posted by Byron King View Post
This is what it looked like, be careful not to round it off or you'll be dealing with more trouble. Lots of PB plaster always helps also. Good luck!
That is the one I have and used.
pasta is offline  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What I Drive
Year, color, and model of your car. Example: 2003 Focus Centennial Edition Sedan
Name
Your real name.
City
State
Country
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:38 PM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum and Volvo XC90 Forum.




 

Search Engine Optimization by vBSEO 3.6.1