Loping Idle
Thread Starter
|
Junior User
Joined: Jun 2004
Posts: 93
Likes: 0
Loping Idle
I have noticed that my engine idle has sort of a lope to it lately. It will vary down and then back up about 50 RPM or so every 8-10 seconds. But just at an idle.
With just 20,000 miles on it I am wondering "What would cause such a thing?"
Scott
With just 20,000 miles on it I am wondering "What would cause such a thing?"
Scott
Thread Starter
|
Junior User
Joined: Jun 2004
Posts: 93
Likes: 0
Thanks for the replies.
I am still under warranty, but now have some info/ammo to take to the dealer and say "You might look at the IAC!".
Thanks again and I will let you know what I find out.
Scott
I am still under warranty, but now have some info/ammo to take to the dealer and say "You might look at the IAC!".
Thanks again and I will let you know what I find out.
Scott
Guest
Joined: Nov 2004
Posts: 7,988
Likes: 55
From: north west new jersey
Originally Posted by FortyFords
Capt ,then the reflash has changed some parameter or sensor feedback to the pcm.
have you tried cleaning the IAC on yours?
his is an 04 older than yours .
9 times out of 10 its that.
Rich
have you tried cleaning the IAC on yours?
his is an 04 older than yours .
9 times out of 10 its that.
Rich
fact is when i do drive, i use the bike so i'm putting more miles on the motorcycle then the truck since it gets 4 times the gas milage . and at $3.17 a gal i have to make ends meet some how .
Trending Topics
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 420
From: Long Island USA
My '96 t-bird 4.6L liked to hunt for an idle spot before it's completed all it's diagnostic monitors. However, I'm starting to wonder if it needed an IAC 
Cap, did you check if your V10 has passed all it's monitors yet since the reflash?
Cap, did you check if your V10 has passed all it's monitors yet since the reflash?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread Starter
|
Junior User
Joined: Jun 2004
Posts: 93
Likes: 0
The truck is up at Pacific Coast Ford as I type this. The are going to have it all day as they are really busy but I will let 'yall know what the problem is/was tomorrow.
One thing, they are recommending that I change the fuel filter now at 20,000 miles and not wait untill 30K. Sound like a good idea?
Scott
One thing, they are recommending that I change the fuel filter now at 20,000 miles and not wait untill 30K. Sound like a good idea?
Scott
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 420
From: Long Island USA
At 20K, and even before, lots of us have reported the fuel filter being pretty clogged.
When I changed mine at 22K miles and about 80K miles worth of fuel through it, it became a different truck again.
When I changed mine at 22K miles and about 80K miles worth of fuel through it, it became a different truck again.
Senior User
Joined: Jul 1999
Posts: 246
Likes: 0
From: Monroe, NC
Wow, you would think ford would fix that problem. I had an 88 Mustang GT that searched for idle, replaced the IAC and that fixed it, my 86 F-150 did it, and still does sometimes even with the IAC replaced. No big deal but people look at you strange when you have loud exhaust and wonder if you want to race. 
Thread Starter
|
Junior User
Joined: Jun 2004
Posts: 93
Likes: 0
Ford did not have time to get to my truck yesterday, it is first in line today however.
Yes, the idle issue will be a warranty thing, the fuel filter ($75!) is my responsibility though.
I will let you know what they find!
Scott
Yes, the idle issue will be a warranty thing, the fuel filter ($75!) is my responsibility though.
I will let you know what they find!
Scott
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
$75 for a fuel filter !!!!!!!!!! Run quick! I knew there was a reason I work on my own trucks and cars.
Yes ,interesting to say the least,with the crud in our fuel we buy now.It wouldn't suprise me if it runs much better after the filter change.
Rich
Yes ,interesting to say the least,with the crud in our fuel we buy now.It wouldn't suprise me if it runs much better after the filter change.
Rich
Thread Starter
|
Junior User
Joined: Jun 2004
Posts: 93
Likes: 0
The news is that the re-flash seems to have fixed the problem! We shall see if it lasts for very long.
On the fuel filter, it was $17 for the filter and almost $50 to install it. What is required for a fuel filter change? I will most likely do the next one myself but what is involved, special tools to buy??
Scott
On the fuel filter, it was $17 for the filter and almost $50 to install it. What is required for a fuel filter change? I will most likely do the next one myself but what is involved, special tools to buy??
Scott
Thread
Thread Starter
Forum
Replies
Last Post
