Rough Idle and CEL Help - Focus Fanatics
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Focus Fanatics > 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    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 01-29-2013, 09:39 PM   #1
GUM85
Focus Jr. Enthusiast
 
Join Date: Jan 2013
Fan#: 109288
Location: Springfield, MO
What I Drive: 2006 Pitch Black ZX4 ST

Posts: 25
FF Reputation: 1 GUM85 Good Standing Member
Buy-Sell-Trade Rating: (0)
Rough Idle and CEL Help

I have an 02 SPI that has a rough idle issue. It started out as just a slight problem but has progressively gotten worse to the point that the car dies when stopped at a stop light because the idle drops down so low. It doesn't seem to be a problem when the engines cold but after the engine reaches operating temperature it starts to idle really rough. It has gotten so bad that when stopped at a stop light I have to keep one foot on the brake while slightly giving it constant throttle to keep the engine from stalling out. It still drives fine with no noticeable power loss. Just has problems at idle. It recently threw a code P0107 I believe "bank one cylinder too lean" I'm not sure it has anything to do with the rough idle issue. I checked for vacuum leaks but couldn't locate any. Cleaned the MAF sensor. Cleaned the PCV valve and I checked the hose that runs from the PCV valve to the intake manifold because I've heard that these engines have a problem with the hose collapsing where it meets the intake manifold and causing idle issues but the hose appears to be fine. I'm not sure what else it could be dirty fuel injector or bad o2 sensor maybe? Any help would be greatly appreciated, Thanks.

(I also forgot to add when I drive at night and I'm at a stop light and the rough idle starts I noticed the headlights and instrument lights will dim. Not sure if this is a symptom of the problem or a cause of the problem).



Last edited by GUM85; 01-29-2013 at 10:32 PM. Reason: Forgot to add some information.
GUM85 is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -5. The time now is 01:48 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information : Site Map

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 Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.