Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

Chugging idle while in gear

Thread Tools
 
Search this Thread
 
Old Dec 16, 2025 | 12:24 AM
  #1  
Dr. Johnson's Avatar
Dr. Johnson
Thread Starter
|
More Turbo
10 Year Member
Joined: Nov 2011
Posts: 508
Likes: 0
From: PNW
Chugging idle while in gear

I have a 2001 E350 7.3 that I neglected for no good reason and it sat for 3 years in my driveway.

prior to being parked, I installed brand new injectors, glow plugs, etc. it ran like a finely tuned watch.

well.. I put new batteries in it, new fuel filter and fuel. She fired right off and ran like nothing ever happened. With one big exception, while under load at idle (in gear) it idles like it has a big cam... and it’s pretty dramatic.

We’ve put a few hundred mile and a tank of diesel through it but the idle persists.

Idles smooth as silk in park or neutral.

revs without issue, makes great power.

any ideas?
 
Reply
Old Dec 16, 2025 | 02:27 AM
  #2  
aawlberninf350's Avatar
aawlberninf350
It's a Van Gogh
15 Year Member
Photogenic
Shutterbug
Liked
Joined: Feb 2010
Posts: 7,815
Likes: 1,336
From: Elk Grove, CA
Club FTE Gold Member
No comprende. What does idle under load mean? Or is the power goofy when underway?

What injectors do you have? ALL details por favor.

Worth inspecting the ICP connector. Pull it off and if you see oil new ICP.
 
Reply
Old Dec 16, 2025 | 10:58 PM
  #3  
Dr. Johnson's Avatar
Dr. Johnson
Thread Starter
|
More Turbo
10 Year Member
Joined: Nov 2011
Posts: 508
Likes: 0
From: PNW
Originally Posted by aawlberninf350
No comprende. What does idle under load mean? Or is the power goofy when underway?

What injectors do you have? ALL details por favor.

Worth inspecting the ICP connector. Pull it off and if you see oil new ICP.

fair point, I made a poor choice of words there lol!

idle while in gear is what I should’ve said. In park it’s smooth as glass. In gear it’s rough like it has a radical cam.

injectors are Alliant, 100% new. They have somewhere around 10k miles on them. Never had an issue until I let it sit for so long.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
One Sock
1999 - 2016 Super Duty
6
Jun 22, 2021 09:57 AM
Chris Karsseboom
1999 - 2003 7.3L Power Stroke Diesel
12
Mar 29, 2016 08:54 PM
mr78F150
1973 - 1979 F-100 & Larger F-Series Trucks
10
May 4, 2015 09:32 PM
rkent5469
Fuel Injection, Carburetion & Fuel System
7
May 29, 2005 01:40 AM
BigDaddy29178
1973 - 1979 F-100 & Larger F-Series Trucks
2
Sep 27, 2002 01:42 PM




All times are GMT -5. The time now is 09:14 PM.

story-0
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-1
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-2
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-3
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-4
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-5
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-6
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-7
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-8
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-9
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