Notices
6.7L Power Stroke Diesel 2011-current Ford Powerstroke 6.7 L turbo diesel engine

DEF issues

Thread Tools
 
Search this Thread
 
Old Aug 6, 2021 | 08:01 PM
  #1  
williamsI's Avatar
williamsI
Thread Starter
|
New User
Joined: Aug 2021
Posts: 1
Likes: 0
DEF issues

I just bought a used F250 diesel powerstroke with 90k miles on it. I have been having problems with the DEF system putting my truck into idle mode and it has been in and out of the shop nickel and dimming me. I finally get a call from the dealership stating that I have a bad knock sensor. My question is what does the knock sensor do and what does it have to do with the my diesel exhaust fluid system?
 
Reply
Old Aug 6, 2021 | 08:16 PM
  #2  
lynnmor's Avatar
lynnmor
More Turbo
Joined: Dec 2011
Posts: 572
Likes: 29
Return with the codes from your computer. You might want to search for a real mechanic and stop losing the nickles.
 
Reply
Old Aug 6, 2021 | 10:38 PM
  #3  
Just Strokin's Avatar
Just Strokin
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
Knock sensor detects pre-ignition
 
Reply
Old Aug 6, 2021 | 10:43 PM
  #4  
ford390gashog's Avatar
ford390gashog
Fleet Owner
20 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
Club FTE Gold Member
Originally Posted by williamsI
I just bought a used F250 diesel powerstroke with 90k miles on it. I have been having problems with the DEF system putting my truck into idle mode and it has been in and out of the shop nickel and dimming me. I finally get a call from the dealership stating that I have a bad knock sensor. My question is what does the knock sensor do and what does it have to do with the my diesel exhaust fluid system?
It would be a NOx sensor not a Knock Sensor.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
pbruckne
6.7L Power Stroke Diesel
11
Jan 5, 2020 11:23 AM
running bear
6.7L Power Stroke Diesel
9
Nov 21, 2010 05:45 PM
zkilla396
6.7L Power Stroke Diesel
4
Nov 6, 2010 09:09 AM
RedTaurus94
1999 - 2003 7.3L Power Stroke Diesel
2
May 7, 2003 08:59 AM




All times are GMT -5. The time now is 11:34 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

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


VIEW MORE
story-1
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-2
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-3
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-4
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
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE