2002 Zetec engine miss - 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 06-06-2011, 08:14 PM   #1
jezzowhat
Focus Rookie
 
Join Date: Jun 2011
Fan#: 86525
Location: brigham city, UT
What I Drive: 2002 black zts

Posts: 4
FF Reputation: 1 jezzowhat Good Standing Member
Buy-Sell-Trade Rating: (0)
2002 Zetec engine miss - help

Hi,
My name is Teresa and I am new to the forum and am hoping someone can help me. I have a 2002 Ford Focus that has randomly had an engine miss at all speeds which is progressively getting worse. It used to come and go but the engine is doing it constantly for the last couple of days. The spark plugs have been changed yesterday but did not help. I am not sure what to check next, the alternator is putting out 15v to the battery. The wierdest thing is if I push the OD button [auto trans] the engine missfire goes away almost completely but the car still has no power. The engine is a Zetec 16 valve.Any help would be appreciated.
Thanx in advance.


jezzowhat is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 06-06-2011, 09:05 PM   #2
viney266
Focus Fanatic
 
viney266's Avatar
 
Join Date: Jun 2003
Fan#: 93
Location: westminster, maryland, MD
What I Drive: focus ztw ,zx3,mustang, motorcycles

Posts: 25,573
FF Reputation: 112 viney266 Excellent Standing Memberviney266 Excellent Standing Member
Buy-Sell-Trade Rating: (4)
Hi!...Welcome to the forum. I"ll bet you just need to finish the job. Are those the original spark plug wires?

1.) replace spark plug wires and boots

2.) Inspect the wires going to the coil itself. They can fray or be damaged. Its common

3.) if after these 2, do the fuel filter as well, if its been more than 30K miles...

BUT, I"ll betcha its the spark plug wires.
__________________
Speed is only a matter of money; how fast do you want to go?
viney266 is offline  
    Reply With Quote
Old 06-06-2011, 09:08 PM   #3
BC_ZX3
DTC P0606
 
BC_ZX3's Avatar
 
Join Date: Jul 2007
Fan#: 48751
Location: Vancouver, BC, Canada
What I Drive: 2001 Red ZX3 Turbo

Posts: 2,851
FF Reputation: 86 BC_ZX3 Excellent Standing Member
Buy-Sell-Trade Rating: (3)
If the plugs are correctly gapped and the spark plug wire boots snug, work backwards from the plug. (btw, examining the plugs when they were replaced may have given you a clue as to which cylinder was misfiring, if it was only one.) Check plug wires (chafing), coil itself (for cracked plastic insulation), coil electrical connector (for broken/loose wires).

Edit: viney266 beat me to it.
BC_ZX3 is offline  
    Reply With Quote
Old 06-06-2011, 10:37 PM   #4
Vexorg
Focus Enthusiast
 
Vexorg's Avatar
 
Join Date: May 2011
Fan#: 85499
Location: Cleveland, OH
What I Drive: 2001 Zx3 ChromeGold

Posts: 343
FF Reputation: 3 Vexorg Good Standing Member
Buy-Sell-Trade Rating: (0)
Did someone install the dreaded evil Bosch spark plugs?
Vexorg is offline  
    Reply With Quote
Old 06-07-2011, 12:25 AM   #5
kevinjohnson3216
Focus Enthusiast
 
Join Date: May 2011
Fan#: 86247
Location: Puna, HI
What I Drive: 2003 Sonic Blue ZX3

Posts: 106
FF Reputation: 3 kevinjohnson3216 Good Standing Member
Buy-Sell-Trade Rating: (0)
Check if all plugs are firing.

Start your motor.

One by one, starting from plug #1, pop the wire off the plug.

A difference in the motor idle = good.

No difference = no spark.

Inspect the plug with no difference. Sand it, re-gap it, replace.

Check to see if it's sparking now.

If not, inspect the wire up to the distributer.

Just follow the plug wires around, inspect for shorts.

Good luck.
kevinjohnson3216 is offline  
    Reply With Quote
Old 06-07-2011, 05:04 PM   #6
jezzowhat
Focus Rookie
 
Join Date: Jun 2011
Fan#: 86525
Location: brigham city, UT
What I Drive: 2002 black zts

Posts: 4
FF Reputation: 1 jezzowhat Good Standing Member
Buy-Sell-Trade Rating: (0)
Thanx for the tips, I will try them this weekend. Why would the OD button have anything to do with this - the engine miss goes away when it is pressed? Computer or tranny sensor problem?
Thanx again
jezzowhat is offline  
    Reply With Quote
Old 06-08-2011, 01:19 AM   #7
Vexorg
Focus Enthusiast
 
Vexorg's Avatar
 
Join Date: May 2011
Fan#: 85499
Location: Cleveland, OH
What I Drive: 2001 Zx3 ChromeGold

Posts: 343
FF Reputation: 3 Vexorg Good Standing Member
Buy-Sell-Trade Rating: (0)
If its not shifting into O/D, it means the motor runs at a higher RPM while driving... misfires happen more at low RPMs.
Vexorg is offline  
    Reply With Quote
Old 06-08-2011, 10:58 AM   #8
sjfishon
Focus Enthusiast
 
sjfishon's Avatar
 
Join Date: Oct 2010
Fan#: 79619
Location: rockford, IL
What I Drive: 2001 black se wagon

Posts: 191
FF Reputation: 7 sjfishon Good Standing Member
Buy-Sell-Trade Rating: (0)
Is it ok for the first few min. when you start it?, if so, i would think fuel filter;;;;;;either way,if the filter has not been changed, change it.
sjfishon is offline  
    Reply With Quote
Old 06-08-2011, 12:23 PM   #9
jezzowhat
Focus Rookie
 
Join Date: Jun 2011
Fan#: 86525
Location: brigham city, UT
What I Drive: 2002 black zts

Posts: 4
FF Reputation: 1 jezzowhat Good Standing Member
Buy-Sell-Trade Rating: (0)
Hi, the engine misses right at startup, just sitting and idling but it smooths out when the OD button is pushed.
jezzowhat is offline  
    Reply With Quote
Old 06-08-2011, 01:03 PM   #10
sjfishon
Focus Enthusiast
 
sjfishon's Avatar
 
Join Date: Oct 2010
Fan#: 79619
Location: rockford, IL
What I Drive: 2001 black se wagon

Posts: 191
FF Reputation: 7 sjfishon Good Standing Member
Buy-Sell-Trade Rating: (0)
is it showing check engine lite?
sjfishon 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 03:10 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.