Notices
1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

2000 expedition rought idle

Thread Tools
 
Search this Thread
 
Old Jun 5, 2010 | 06:02 PM
  #1  
goblin53's Avatar
goblin53
Thread Starter
|
New User
Joined: Jun 2010
Posts: 6
Likes: 0
2000 expedition rought idle

my engine is fine until i drive it for a couple of miles. then if you come to a stop light the rpms jump up and down from 300 to 1200 rpms. it was dying til i changed the TPC ( throttle position censor). now it isnt dying but its still jumping up and down on the rpms for a few minutes while idling then it levels out again. this is a 4.6 engine not a 5.4.
 
Reply
Old Jun 5, 2010 | 06:51 PM
  #2  
alloro's Avatar
alloro
Fleet Owner
15 Year Member
Shutterbug
Liked
Loved
Joined: Apr 2008
Posts: 24,318
Likes: 5,128
From: 0,0,1
Club FTE Gold Member
Remove, clean, and reinstall the IAC valve (or replace it, your choice). It's at the top front of the throttle body.
 
Reply
Old Jun 5, 2010 | 07:24 PM
  #3  
goblin53's Avatar
goblin53
Thread Starter
|
New User
Joined: Jun 2010
Posts: 6
Likes: 0
is rem-oil ok or do i need to use carb cleaner? brake cleaner?
 
Reply
Old Jun 5, 2010 | 09:05 PM
  #4  
alloro's Avatar
alloro
Fleet Owner
15 Year Member
Shutterbug
Liked
Loved
Joined: Apr 2008
Posts: 24,318
Likes: 5,128
From: 0,0,1
Club FTE Gold Member
Carb cleaner does a nice job.
 
Reply
Old Jun 6, 2010 | 05:22 PM
  #5  
bnovak's Avatar
bnovak
Senior User
Joined: Jun 2009
Posts: 336
Likes: 0
Yup, what he said.

MAF cleaner works too. And you can clean the mass airflow sensor and intake air temp sensor with it as well

From an experience with my POS dodge pickup, you might need to take the IAC out and soak it to fix the problem. (flip it upside down and basically fill it with cleaner.) They can get really gummed up
 
Reply
Old Jun 6, 2010 | 08:52 PM
  #6  
trsimmons25's Avatar
trsimmons25
Senior User
Joined: Dec 2009
Posts: 147
Likes: 0
From: Cuyahoga Falls, OH
be sure to check the spark plug boots down in the well, they could collect moisture. I recently ran across this after I flushed my coolant and had some water spill. I pulled the COPs and found come moisture on the boots, and blew out the wells with some compressed air.
 
Reply
Old Jun 9, 2010 | 03:58 PM
  #7  
goblin53's Avatar
goblin53
Thread Starter
|
New User
Joined: Jun 2010
Posts: 6
Likes: 0
Thanks to you all the truck is running fine in park and neutral. but the rpms still jump in drive and reverse occasionally. but that i can deal with it only jumps about 400 rpms instead of 1000 rpms.
 
Reply
Old Jun 9, 2010 | 04:55 PM
  #8  
alloro's Avatar
alloro
Fleet Owner
15 Year Member
Shutterbug
Liked
Loved
Joined: Apr 2008
Posts: 24,318
Likes: 5,128
From: 0,0,1
Club FTE Gold Member
Maybe cleaning the IAC wasn't enough. You might end up replacing it.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-1

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-2

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-3

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-4

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-5

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-6

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-7

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-8

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-9

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
F_TOUR
1978 - 1996 Big Bronco
8
Jul 3, 2019 10:20 AM
Matt2000expedition
1997 - 2006 Expedition & Navigator
3
Jan 14, 2013 10:53 PM
bikerbutcher
1987 - 1996 F150 & Larger F-Series Trucks
1
Sep 30, 2012 02:35 AM
OSU_AGR
1997 - 2003 F150
10
Sep 2, 2012 12:34 PM
Schmids4.9l
Ford Inline Six, 200, 250, 4.9L / 300
6
Jan 12, 2005 06:41 PM




All times are GMT -5. The time now is 05:14 PM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 10:59:05


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-3
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-4
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-6
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-7
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-8
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-9
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE