idles up and down - 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 10-31-2009
Member
Thread Starter
 
Join Date: Oct 2009
Posts: 1
idles up and down

hello guys, what causes idle to fluctuate up and down when first started ,then it evens out after about 5 minutes.runs fine while your driving,but when you come to a stop and sitting there it does it again.at night you can see your headlights on the car in front of you getting dim then bright as you sit there at a stop. new maf,plugs wires,temperature sensor, checked vacum hoses,cleaned iac still does this. its a 94 3.0 with only 101,000 miles any ideas??
Reply With Quote
  #2  
Old 11-12-2009
LuckyRanger13's Avatar
Member
iTrader: (1)
 
Join Date: Nov 2007
Location: Santa Fe, TN
Posts: 554
I'm not really sure, mine has been acting up similar to this here lately. I'm in the same boat as you looking for an answer to this.
Reply With Quote
  #3  
Old 11-12-2009
My91Ranger's Avatar
Member
iTrader: (1)
 
Join Date: Apr 2007
Location: Roseville, Michigan
Posts: 2,252
Although you said you cleaned your IAC that would still be the main suspect to me. See if its working properly by starting the truck and then unplug the IAC and see if the idle changes. If the truck is still cold the idle should drop when the IAC is unplugged.
Reply With Quote
  #4  
Old 11-12-2009
dcrymes99ranger's Avatar
Member
 
Join Date: Sep 2008
Location: Greenville south carolina
Posts: 834
Quote:
Originally Posted by My91Ranger View Post
Although you said you cleaned your IAC that would still be the main suspect to me. See if its working properly by starting the truck and then unplug the IAC and see if the idle changes. If the truck is still cold the idle should drop when the IAC is unplugged.
I was gonna say the same thing Rob. I had to change out my IAC i got one for 38.00 at oreillys but thats because i worked there. I got a discount. Anyways my truck was idleing low and i took the iac off while it ran it quit. I first sprayed some carb cleaner not brake cleaner carb cleaner. It fixed it for a few days then went back to idleing crazy again, so i replaced it and it starts up no problems.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1994 2.3 idles rough and stalls Sick916 SOHC - 2.3L & 2.5L Lima Engines 5 11-10-2014 12:14 PM
low volts and idles rough sometimes help 89rangerblacked General Technical & Electrical 3 11-06-2011 11:20 AM
Down Under, On Top, Down South :) Scrat01 Member Introductions 9 09-13-2010 08:14 AM
slowing down... down hills... does yours do this? nross General Ford Ranger Discussion 26 12-09-2009 01:25 PM
Idles rough, and hard to start, Help!! BOxford32 2.9L & 3.0L V6 Tech 2 02-23-2008 07:29 PM


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 02:39 AM.


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.