Focus idle and cut out problems - 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 Second Generation > MK2 Focus

MK2 Focus The place to chat about general questions, window tinting, exterior body, interior and lighting upgrades for the second generation 2008-2011 Focus.

Search This Forum | Image Search | Advanced Search    
FocusFest

Reply
 
LinkBack Thread Tools Display Modes
Old 10-10-2018, 04:01 AM   #1
Focus Rookie
 
Join Date: Oct 2018
Fan#: 406047
Posts: 2
Points 4, Level 1
Points: 4, Level: 1 Points: 4, Level: 1 Points: 4, Level: 1
Level Up 7% Completed
Level up: 7% Level up: 7% Level up: 7%
Forum Activity 6%
Activity: 6% Activity: 6% Activity: 6%
FF Reputation: 1 ap1980 Good Standing Member
Buy-Sell-Trade Rating: (0)
Focus idle and cut out problems

Hello,

I purchased a 2009 focus about a month ago and a couple of problems have come to light (similar to initial problems experienced with MK1 focus 10 years ago).

1.) The idle isn't exact i.e. sometimes it's around 700-800, other times it can be just over 1000.
2.) If I'm driving and put the car in neutral (bad habit) the revs rise to about 2500, then there's a click sound and they suddenly drop and sometimes low enough for the car to stall. This process repeats, up down up down etc.

FYI the problem with my old MK1 focus cutting out was the speed sensor. It would cut out when slowing or changing down a gear so wonder if this is similar. Or from what other people have mentioned could be the IACV.

Any help would be appreciated

Alex


ap1980 is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-10-2018, 04:21 PM   #2
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 15,209
Points 9,388, Level 65
Points: 9,388, Level: 65 Points: 9,388, Level: 65 Points: 9,388, Level: 65
Level Up 13% Completed
Level up: 13% Level up: 13% Level up: 13%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 62 amc49 Excellent Standing Member
Buy-Sell-Trade Rating: (0)
Vacuum leak.
__________________
Fix the driver first, then fixing the car becomes so much easier..........
amc49 is online now  
    Reply With Quote Quick reply to this message
Old 12-13-2018, 12:21 AM   #3
Focus Rookie
 
Join Date: Nov 2018
Fan#: 407621
Location: Malmö, United States
What I Drive: Metallic grey Focus DA3

Posts: 1
Points 4, Level 1
Points: 4, Level: 1 Points: 4, Level: 1 Points: 4, Level: 1
Level Up 7% Completed
Level up: 7% Level up: 7% Level up: 7%
Forum Activity 4%
Activity: 4% Activity: 4% Activity: 4%
FF Reputation: 1 Niiska Good Standing Member
Buy-Sell-Trade Rating: (0)
I've experienced similar problems with mine. Do you have any good ideas of where to start troubleshooting? Or is it just to find all vacuum and go over it inch by inch?
And how is the best way to troubleshoot a vacuum leak. I've never done it before.
Quote:
Originally Posted by amc49 View Post
Vacuum leak.
Sent from my Nokia 7 plus using FF Mobile
Niiska is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-16-2018, 10:21 PM   #4
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 15,209
Points 9,388, Level 65
Points: 9,388, Level: 65 Points: 9,388, Level: 65 Points: 9,388, Level: 65
Level Up 13% Completed
Level up: 13% Level up: 13% Level up: 13%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 62 amc49 Excellent Standing Member
Buy-Sell-Trade Rating: (0)
A 500 page book there, you need experience knowing where to check to begin with. Every vacuum hose and attachment point is suspect as well as other engine parts. Some spray carb cleaner around engine critical points and if the idle goes up you found the leak.
__________________
Fix the driver first, then fixing the car becomes so much easier..........
amc49 is online now  
    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 03:58 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