Stumble when idling 2002 3.0 V6 - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-24-2006
jax jax is offline
Member
Thread Starter
 
Join Date: Apr 2006
Location: Austin, TX
Posts: 4
Stumble when idling 2002 3.0 V6

Hi guys,


Newbie here. Austin Texas is my hometown. Bought a 2002 Ranger with 45K miles . Good shape.

Engine stumbles when idling about every 3 or 4 seconds. I also got a misfire code on cyl 2 I had autozone check it for me. They cleared the code out. Ive changed out plugs, going to do fuel filter next. Anything else I should check immidiately before I go throwing money at this thing?
Reply With Quote
  #2  
Old 04-24-2006
Wowak's Avatar
Member
 
Join Date: Jun 2004
Location: Merritt Island, FL
Posts: 2,223
My 03 is also developing a rough idle. The only code its thrown so far is a misfire, and only once. I replaced plugs/wires/fuel filter before the October Centralia meet. I'm not sure where to go next, without a code my Ford tech buddies are reluctant to offer advice, esp. since they're all adamant that 3.0 Rangers all idle rough.
Reply With Quote
  #3  
Old 04-25-2006
jax jax is offline
Member
Thread Starter
 
Join Date: Apr 2006
Location: Austin, TX
Posts: 4
Quote:
Originally Posted by Wowak
My 03 is also developing a rough idle. The only code its thrown so far is a misfire, and only once. I replaced plugs/wires/fuel filter before the October Centralia meet. I'm not sure where to go next, without a code my Ford tech buddies are reluctant to offer advice, esp. since they're all adamant that 3.0 Rangers all idle rough.

I was thinking abut cleaning the IAC and possibly checking the EGR passage as well. Maybe use some seafoam to do a top end cleaning. Im fairly new to this truck so any advice would be great. Thanks in advance.
Reply With Quote
  #4  
Old 04-25-2006
sawred's Avatar
Member
 
Join Date: Jan 2005
Location: San Antonio, TX
Posts: 580
Is this with the A/C on? Maybe the A/C compressor?
Reply With Quote
  #5  
Old 04-25-2006
INT3RC3PTOR's Avatar
Veteran Status Achieved
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
have you checked yer o2 sensors?.. they can go bad outa the blue as well, other than that looks like most checks have been brought up. might just need a good cleaning inside after watever happened..
Reply With Quote
  #6  
Old 04-25-2006
Wowak's Avatar
Member
 
Join Date: Jun 2004
Location: Merritt Island, FL
Posts: 2,223
I would imagine that an O2 sensor failure would throw a code, but I could be wrong. Mine idles rough with or without the A/C on, I thought the same thing Mike. Its not only rough, but its a little low, sometimes 650-700rpm. Not always though. Also, it usually idles fine cold, but after I run to work (1+hours at 65-85mph on I95) its much more prone to the problem.
Reply With Quote
  #7  
Old 04-25-2006
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
That's a good thought. I don't know if the O2 sensor can make that happen -- but it's certainly in the loop, so to speak.

Ranger coil packs have been known to have "issues" as well -- however, usually what you have is TWO cylinders that show misfires because each coil fires two cylinders.

All 3.0's DO idle rough -- some rougher than others. I'd tell you to clean your MAF; but you're getting misfire codes for a single cylinder? If you're getting them for two cylinders, and they are the "pair" that goes to a coil pack, you might want to look at the coil pack.

I just replaced my wires, a little after replacing my plugs and my idle DID get smoother, interestingly enough. My wires were 3+ years old, with 60,000 miles and a LOT of offroading water, dirt and mud having hit them.
Reply With Quote
  #8  
Old 05-02-2006
Member
 
Join Date: May 2006
Location: Plantation, FL
Posts: 5
It is most likely the coil pack......2002 locations for the coil pack put it in direct fire....the heat from the manny messes them up....get a new one or a working one and shield it
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
stumble at startup staracaster 2.9L & 3.0L V6 Tech 0 06-10-2014 07:28 AM
Stumble at idle Primer88 SOHC - 2.3L & 2.5L Lima Engines 7 08-22-2011 09:24 PM
Engine stumble and strange noise 98WARanger 2.9L & 3.0L V6 Tech 4 10-15-2009 03:26 PM
Engine stumble when in park or neutral JK1022 4.0L OHV & SOHC V6 Tech 8 04-25-2008 08:27 PM
Low rpm stumble NVR2FST 4.0L OHV & SOHC V6 Tech 4 12-19-2007 12:59 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 03:58 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.