Rough Idle - 2002 ZX5 Zetec - Ford Focus Forum, Ford Focus ST Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST 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    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 05-31-2007, 12:12 PM   #1
bajadog
Focus Rookie
 
Join Date: Mar 2006
Fan#: 33403
Location: San Diego, CA.
What I Drive: 2001 White SE

Posts: 7
FF Reputation: 1 bajadog Good Standing Member
Buy-Sell-Trade Rating: (0)
Question Rough Idle - 2002 ZX5 Zetec

BTW. I did search, but did not find a post with this topic.

My 2.0 L Zetec ZX5 started getting bad MPG, about 21-23 MPG.
No mods other than a K&N filter. 68K miles.

I noticed a "hunting" rough idle when I came to a stop. This was
even when warm.
Today I was at a red light, and I moved the auto tranny into neutral/park,
and the rough idle got REAL bad. I put it in park, and it diminished.

I don't show any OBD codes, and no smoke or oil use, no vacuum leaks,
just cleaned MAF.

Any clues?

Thanks.


bajadog is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 05-31-2007, 12:45 PM   #2
Captain Moonpie
Focus "Sleeper"
 
Captain Moonpie's Avatar
 
Join Date: Dec 2006
Fan#: 41715
Location: Yakima, Wa, WA
What I Drive: 2003 Focus ZX3 deep red

Posts: 1,619
FF Reputation: 13 Captain Moonpie Great Standing Member
Buy-Sell-Trade Rating: (3)
Fuel filter?
__________________
DRIVE IT LIKE YOU STOLE IT!!!!
WAY too many performance mods to list. Check profile if you wanna know. And yes, I installed all my mods myself in my garage. No special tools.

GET NITROUS PEOPLE!!
Captain Moonpie is offline  
    Reply With Quote
Old 05-31-2007, 01:35 PM   #3
02ZX3inPA
Wrenchin' aussie pos
 
02ZX3inPA's Avatar
 
Join Date: Mar 2007
Fan#: 45346
Location: Newville, PA
What I Drive: The Blue Devil

Posts: 2,112
FF Reputation: 40 02ZX3inPA Great Standing Member
Buy-Sell-Trade Rating: (2)
The Captain is very likely correct. My 02 did the same thing shortly after I bought it. The filter is less than 10 dollars, and a pretty easy DIY. Any DIY manual will be sufficient for instructions, also check the how-tos. If the filter does not clear up the problem, it may be the fuel pump. There was either a recall or TSB for the fuel pumps on the 00-01 foci, and I THINK that may also be good for the early 02's, but I'm not exactly certain.
__________________
ZC #154..Focus Nation..
02ZX3inPA is offline  
    Reply With Quote
Old 05-31-2007, 06:37 PM   #4
Captain Moonpie
Focus "Sleeper"
 
Captain Moonpie's Avatar
 
Join Date: Dec 2006
Fan#: 41715
Location: Yakima, Wa, WA
What I Drive: 2003 Focus ZX3 deep red

Posts: 1,619
FF Reputation: 13 Captain Moonpie Great Standing Member
Buy-Sell-Trade Rating: (3)
^^ I am pretty sure the fuel pump recall was just a '00 problem and they had it fixed by the '02. But the fuel pump could still be the culprit. Go change the filter and then let us know how it works. We'll go from there.
__________________
DRIVE IT LIKE YOU STOLE IT!!!!
WAY too many performance mods to list. Check profile if you wanna know. And yes, I installed all my mods myself in my garage. No special tools.

GET NITROUS PEOPLE!!
Captain Moonpie is offline  
    Reply With Quote
Old 06-08-2007, 11:30 AM   #5
bajadog
Focus Rookie
 
Join Date: Mar 2006
Fan#: 33403
Location: San Diego, CA.
What I Drive: 2001 White SE

Posts: 7
FF Reputation: 1 bajadog Good Standing Member
Buy-Sell-Trade Rating: (0)
Thanks to guys!

I've got the filter, and will change it this weekend.

I'll post results.
bajadog 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
JRSC rough idle with FC TB? dBlast General Forced Induction 5 04-18-2005 01:11 AM
Rough idle when in gear JohnnyC General Technical Chat 7 12-07-2004 12:16 PM
Does a 2002 ZX5 Zetec have dohc MasterZX5 ZETEC Performance (2000-2004) 15 05-05-2004 10:27 AM
Engine transplant Zetec 1600 to ZX5 2300 CharlieB General Technical Chat 2 03-22-2004 02:48 AM
rough idle CowsGoMoo ZETEC Performance (2000-2004) 9 10-16-2003 03:11 PM


All times are GMT -5. The time now is 04:04 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : 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 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.