Notices
6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

boost sensor

Thread Tools
 
Search this Thread
 
Old Sep 4, 2013 | 10:15 PM
  #1  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

boost sensor

Hello guys
my 03 6.0 has an issue with the boost (mapp) sensor
I have a bully dog outlook monitor on it for gauges and when it is cold the boost is all over the place, from 2-35 psi jumping around steady, when it warms up it drops to zero and stays their.
I know this is a wiring issue and i am just looking for some info on where to start looking.
 
Reply
Old Sep 5, 2013 | 12:13 AM
  #2  
BLADE35's Avatar
BLADE35
Hotshot
15 Year Member
Liked
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
Sounds like a Bad Map sensor

Compare BARO MAP EBP at KOEO are they the Same

Then Get it Hot and Do the KOEO Thing Again are they the Same

Has the CEL turned on at any Time??

Any DTC??
 
Reply
Old Sep 5, 2013 | 06:29 AM
  #3  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

Originally Posted by BLADE35
Sounds like a Bad Map sensor

Compare BARO MAP EBP at KOEO are they the Same

Then Get it Hot and Do the KOEO Thing Again are they the Same

Has the CEL turned on at any Time??

Any DTC??
Done! map has been changed I thuoght that it was bad at first also
no cel
only p1000
 
Reply
Old Sep 5, 2013 | 06:37 PM
  #4  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

Can anyone tell me what the values should be on the wiring to the map sensor?
it is a three wire pressure sender, so it should be
1, V+ (not sure if it is 5v,8v or 12v?)
2, V+ voltage output which would vary with boost pressure
3, v- ground
KOER and KOEO
I am sure this is a wiring issue. it will be rubbed though or broken somewhere but i need to know which one to look for.
 
Reply
Old Sep 5, 2013 | 06:43 PM
  #5  
BLADE35's Avatar
BLADE35
Hotshot
15 Year Member
Liked
Joined: Apr 2010
Posts: 19,055
Likes: 235
From: Saratoga Springs,UT
https://www.ford-trucks.com/ford-man...%20diagram.pdf
 
Reply
Old Sep 5, 2013 | 10:27 PM
  #6  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

Thanks Blade
 
Reply
Old Sep 14, 2013 | 01:53 PM
  #7  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

I tested the wiring to the map and it was good, exactly as the wiring diagram showed.
here is my testing this morning
First pic is 2500rpm no load
second pic is idle
third id dtc
The problem is low power, get some black smoke when accelerating from a stop.
seems to get worse as it warms up.
for some reason my AE does not have exhaust back pressure? weird but i have looked forever trying to find that setting
 
Attached Images    
Reply
Old Sep 18, 2013 | 07:19 AM
  #8  
djanzen's Avatar
djanzen
Thread Starter
|
Elder User
Joined: Nov 2009
Posts: 636
Likes: 0
From: Saskatoon
Club FTE Silver Member

Well My truck went from a low power condition to a hot no start condition!
On my way home last night I was accelerating up a overpass and all of a sudden it had NO power at all. when i got home i shut it off and tried to restart, no luck
two hours later i when out and it would start, guess i am doing some HPOP work!
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-1

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

 Brett Foote
story-2

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

 Michael S. Palmer
story-3

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

 Verdad Gallardo
story-4

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-5

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-6

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-7

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-8

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-9

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
Old Sep 18, 2013 | 07:38 AM
  #9  
npccpartsman's Avatar
npccpartsman
Hotshot
20 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Club FTE Silver Member

Originally Posted by djanzen
I tested the wiring to the map and it was good, exactly as the wiring diagram showed.
here is my testing this morning
First pic is 2500rpm no load
second pic is idle
third id dtc
The problem is low power, get some black smoke when accelerating from a stop.
seems to get worse as it warms up.
for some reason my AE does not have exhaust back pressure? weird but i have looked forever trying to find that setting
03 engines use an inferred EBP reading. The sensor is there but it's been taken out of the strategy on those engines so the PCM doesn't see it.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Shaun Fed
6.4L Power Stroke Diesel
3
Jul 25, 2019 05:12 PM
JGRNAUT_7.3L
1999 - 2003 7.3L Power Stroke Diesel
10
Dec 2, 2017 11:07 AM
Tugly
1999 - 2003 7.3L Power Stroke Diesel
8
May 9, 2014 07:49 AM
baredog26
1999 - 2003 7.3L Power Stroke Diesel
3
Dec 9, 2010 11:30 AM
bobrc
6.0L Power Stroke Diesel
3
Aug 24, 2008 12:56 PM




All times are GMT -5. The time now is 12:49 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