Solutions for a rough idle? - 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    
FocusFest Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 01-17-2008, 07:58 PM   #1
Acclaimed
Focus Enthusiast
 
Join Date: Jan 2008
Fan#: 52754
Location: Lexington, NC
What I Drive: 2001 Pitch Black ZX3

Posts: 52
FF Reputation: 1 Acclaimed Good Standing Member
Buy-Sell-Trade Rating: (0)
Solutions for a rough idle?

I just purchased a used 01 zx3 from ebay. Carfax checks out ok but it needs some tuning.

At idle it bounces you a little bit. The exhaust sounds like a drum beat instead of a steady hum. It doesn't sound like its about to choke out though. The engine shudders as I rev it also. It reminds me of a go-kart engine as you give it gas. I just changed the valve cover gasket and noticed the sparkplug slots are pretty dirty with a cruddy/chalky white substance.

What are the first few things to check for a rough idle? Plugs, wires, timing?


Acclaimed is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 01-18-2008, 01:39 PM   #2
venomfocus
Focus Addict
 
venomfocus's Avatar
 
Join Date: Sep 2003
Fan#: 907
Location: Going to Ft. Stewart
What I Drive: A fast 2001 Pitch Black ZX3

Posts: 743
FF Reputation: 1 venomfocus Good Standing Member
Buy-Sell-Trade Rating: (0)
check plugs first. wires can last for a long time without problems
__________________
Doing Operation Restoring Hope to my Focus. Trying to get it back on the road around the same power level.
venomfocus is offline  
    Reply With Quote
Old 01-18-2008, 04:17 PM   #3
killer ZETEC
GL1TCH
 
killer ZETEC's Avatar
 
Join Date: Mar 2007
Fan#: 44757
Location: wisconsin
What I Drive: advance trac french blue 03 zx3

Posts: 3,560
FF Reputation: 42 killer ZETEC Great Standing Member
Buy-Sell-Trade Rating: (5)
also check the wires that fire the coil pack, that little plug can cause a lot of issues, mainly due to the wires getting pinched right there and shorting to ground on the bracket or jsut breaking offf like mine did. btw do you get a cel?
__________________
focus owner whos runnin with the hatchet
zc187 focus nation and fvscc's car 343
still getting part and things for this turbo.
will it run soon?? who knows.
killer ZETEC is offline  
    Reply With Quote
Old 01-19-2008, 12:39 AM   #4
Acclaimed
Focus Enthusiast
 
Join Date: Jan 2008
Fan#: 52754
Location: Lexington, NC
What I Drive: 2001 Pitch Black ZX3

Posts: 52
FF Reputation: 1 Acclaimed Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by killer ZETEC View Post
. btw do you get a cel?
Little help on what you are asking on that one?
Acclaimed is offline  
    Reply With Quote
Old 01-22-2008, 10:01 PM   #5
Kfokus
Focus autox'r
 
Kfokus's Avatar
 
Join Date: Oct 2006
Fan#: 40398
Location: West Manheim, PA
What I Drive: zx3

Posts: 2,507
FF Reputation: 41 Kfokus Great Standing Member
Buy-Sell-Trade Rating: (11)
cel=check engine light
tps =throttle postion sensor may be bad, causing rough idle.
Unplug it(its right on throttle body) if it runs better w/o being plugged in you found the problem.
Also clean the mass air flow sensor.
This is located right after air filter box.
Buy some maf cleaner(spray bottle @ ur local parts store)After you take off intake, or just the maf tube.
Spray down the maf sensor until liquid coming out on other side is clear.
then reinstall and start car to see if it helped.
And a new airfilter can help alot if yours is really bad.
Its a good idea to go ahead and atleast buy a K+N panel filter.which is same size as stock paper filter. Only its reusable.
__________________
01 zx3 6k $, go fast bits 6 k$, beating a 08 zo6=priceless
JUNE 2010 ROTM
ZETEC CREW165
Kfokus is offline  
    Reply With Quote
Old 01-23-2008, 10:04 AM   #6
silveib
Focus Addict
 
silveib's Avatar
 
Join Date: May 2007
Fan#: 47255
Location: toronto
What I Drive: 2004 black ZX3

Posts: 1,296
FF Reputation: 26 silveib Great Standing Member
Buy-Sell-Trade Rating: (0)
some one correct me if i am wrong but if you get a white chalky substance on your spark plugs doesnt that mean that you are leaking coolant into the combustion chamber? i only know because my coolany dropped a little over the few years ive owned my car and my mechanic friend checked the spark plugs for a white substance to make sure it wasnt leaking into the motor
silveib is offline  
    Reply With Quote
Old 01-23-2008, 01:57 PM   #7
killer ZETEC
GL1TCH
 
killer ZETEC's Avatar
 
Join Date: Mar 2007
Fan#: 44757
Location: wisconsin
What I Drive: advance trac french blue 03 zx3

Posts: 3,560
FF Reputation: 42 killer ZETEC Great Standing Member
Buy-Sell-Trade Rating: (5)
well they might have been in the engine too long.. but as for coolant it really doesnt say about colors on the plugs. but if your car smells like coolant when its running and the exhaust basicly makes you gag then coolant is burning somewhere,lol. as for the white stiff the head on the car is aluminum if water from the road gets in there it will corrode slightly, its nothing to wirry about jsut dry the holes out and put new plugs in when you get a tune up.
__________________
focus owner whos runnin with the hatchet
zc187 focus nation and fvscc's car 343
still getting part and things for this turbo.
will it run soon?? who knows.
killer ZETEC 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
Rough Idle ChaosWarlord26 General Technical Chat 25 10-05-2012 04:43 PM
Rough Idle and SES Codes chkpnt General Technical Chat 3 08-25-2007 12:14 AM
Irregular Surging and Falling Rough Idle that worsened. focusowner2001 General Technical Chat 10 07-06-2007 09:00 AM
Rough Idle with AC on tminer250 General Technical Chat 1 06-05-2007 11:33 AM
JRSC rough idle with FC TB? dBlast General Forced Induction 5 04-18-2005 01:11 AM


All times are GMT -5. The time now is 09:17 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.