Oxygen Sensors, OL faults, and crazy volts - Page 3 - 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 Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
FocusFest FocusFanatics Merchandise

Reply




 
LinkBack Thread Tools Display Modes
Old 01-21-2013, 08:38 PM   #21
Focus Enthusiast
 
Join Date: Aug 2010
Fan#: 78065
Location: Va Bch, VA
What I Drive: 02 Silver Focus SE

Posts: 202
FF Reputation: 4 SanduskySerpents Good Standing Member
Buy-Sell-Trade Rating: (1)
When I rewired the o2 sensors they started functioning again. In all this mess I think I have solved it. Idle was ruff sounding like an overly aggressive camshaft were in it always about to die. I performed a smoke test after rewireing failed to fix everything and I found a that the EGR gasket failed catastrophically . After this I pressurized the cooling system a found 3 hoses leaking. Replaced gasket and hoses and it started idling 90% better. The unmetered air was causing it to go into open loop fault which just exasperated the problem.
SanduskySerpents is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-21-2013, 08:49 PM   #22
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 6,575
Points 3,823, Level 39
Points: 3,823, Level: 39 Points: 3,823, Level: 39 Points: 3,823, Level: 39
Level Up 16% Completed
Level up: 16% Level up: 16% Level up: 16%
Forum Activity 99%
Activity: 99% Activity: 99% Activity: 99%
FF Reputation: 33 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
Well I had that in there somewhere and redid my post since it wandered too much.

Sorry.

Point was, O2 sensor circuits are low voltage, when cut they need best connection possible, I've cut them before, preferable to solder them to prevent later humid conditions messing up the connection by corrosion, it doesn't have to be visible corrosion to cause trouble there.
amc49 is online now  
    Reply With Quote Quick reply to this message
Old 01-21-2013, 08:56 PM   #23
Focus Enthusiast
 
Join Date: Aug 2010
Fan#: 78065
Location: Va Bch, VA
What I Drive: 02 Silver Focus SE

Posts: 202
FF Reputation: 4 SanduskySerpents Good Standing Member
Buy-Sell-Trade Rating: (1)
Yeah I didn't solder them but I did use heat shrink over the connectors to weather proof.
SanduskySerpents is offline  
    Reply With Quote Quick reply to this message
Old 01-21-2013, 09:41 PM   #24
Late for Dinner
 
goinloco1's Avatar
 
Join Date: May 2004
Fan#: 8529
Location: Aberdeen, SD
What I Drive: kermit

Posts: 15,291
Points 14,831, Level 78
Points: 14,831, Level: 78 Points: 14,831, Level: 78 Points: 14,831, Level: 78
Level Up 96% Completed
Level up: 96% Level up: 96% Level up: 96%
Forum Activity 9%
Activity: 9% Activity: 9% Activity: 9%
FF Reputation: 90 goinloco1 Excellent Standing Member
Buy-Sell-Trade Rating: (2)
The downstream o2 does nothing but monitor the cat. If your getting wierd readings on it and your upstream your cat may be shot. your saying it runs like crap and isn't drivable also leads me this way.
By the way, stay away from bosch sensors, they are either crap right from the factory or burn up shortly. Definitely stay away from the bosch universals where you have to splice wires.
As was said, stick with oem.
goinloco1 is offline  
    Reply With Quote Quick reply to this message
Old 01-21-2013, 09:47 PM   #25
Focus Enthusiast
 
Join Date: Aug 2010
Fan#: 78065
Location: Va Bch, VA
What I Drive: 02 Silver Focus SE

Posts: 202
FF Reputation: 4 SanduskySerpents Good Standing Member
Buy-Sell-Trade Rating: (1)
The erratic readings came from th OL fault and bad wiring. But it's fixed now. The car only has what I would call the usual stumble. It's not perfect but it runs
SanduskySerpents is offline  
    Reply With Quote Quick reply to this message
Old 01-21-2013, 09:59 PM   #26
Late for Dinner
 
goinloco1's Avatar
 
Join Date: May 2004
Fan#: 8529
Location: Aberdeen, SD
What I Drive: kermit

Posts: 15,291
Points 14,831, Level 78
Points: 14,831, Level: 78 Points: 14,831, Level: 78 Points: 14,831, Level: 78
Level Up 96% Completed
Level up: 96% Level up: 96% Level up: 96%
Forum Activity 9%
Activity: 9% Activity: 9% Activity: 9%
FF Reputation: 90 goinloco1 Excellent Standing Member
Buy-Sell-Trade Rating: (2)
my bad, missed that post...lol
got to reading everything else and musta skimmed it.
goinloco1 is offline  
    Reply With Quote Quick reply to this message
Old 01-21-2013, 10:02 PM   #27
Late for Dinner
 
goinloco1's Avatar
 
Join Date: May 2004
Fan#: 8529
Location: Aberdeen, SD
What I Drive: kermit

Posts: 15,291
Points 14,831, Level 78
Points: 14,831, Level: 78 Points: 14,831, Level: 78 Points: 14,831, Level: 78
Level Up 96% Completed
Level up: 96% Level up: 96% Level up: 96%
Forum Activity 9%
Activity: 9% Activity: 9% Activity: 9%
FF Reputation: 90 goinloco1 Excellent Standing Member
Buy-Sell-Trade Rating: (2)
May want to go to the parts store and grab a can of maf cleaner. May take care of some of the other problems or at least smooth them out some. no telling how long its been since its been cleaned last.
goinloco1 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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



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 04:28 AM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : 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 ATS Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum, Civic Type-R Forum and Volvo XC90 Forum.





Search Engine Optimization by vBSEO 3.6.1