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

"service engine soon"

Thread Tools
 
Search this Thread
 
Old Jul 14, 2011 | 10:02 AM
  #1  
roger.lees51's Avatar
roger.lees51
Thread Starter
|
Freshman User
Joined: Jul 2011
Posts: 48
Likes: 0
"service engine soon"

My service engine soon light came on and my 2001 7.3 began to misfire and stall ocassionally at idle.
I replace the fuel/ water filter and cleaned the air filter. Drove it for two hours and it started mssing again and light came on.
Injector pump? Injectors?
 
Reply
Old Jul 14, 2011 | 10:05 AM
  #2  
timmyboy76's Avatar
timmyboy76
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
i'd say the cps or you need to do the 50 cent mod.
 
Reply
Old Jul 14, 2011 | 10:06 AM
  #3  
ToMang07's Avatar
ToMang07
Logistics Pro
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Originally Posted by roger.lees51
My service engine soon light came on and my 2001 7.3 began to misfire and stall ocassionally at idle.
I replace the fuel/ water filter and cleaned the air filter. Drove it for two hours and it started mssing again and light came on.
Injector pump? Injectors?
Well, I would start with a Ford CPS and go from there.... wouldn't hurt to try unplugging the ICP and see if that clears it up too.

Fuses all good? Oil level good? WTS light going on/off like normal?

Do you have access to a good scanner that can pull the PSD codes?

When it's running bad, does it seem like all cylinders are misfiring, one side, just a couple, etc?
 
Reply
Old Jul 14, 2011 | 10:07 AM
  #4  
89LX306's Avatar
89LX306
Fleet Mechanic
20 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Jul 2003
Posts: 1,815
Likes: 24
From: Houston
You need to have your codes read by a code reader that can read all the diesel codes.

Does it only do this at idle?

Where are you located? I'll read your codes for you if you are near me.
 
Reply
Old Jul 14, 2011 | 10:14 AM
  #5  
roger.lees51's Avatar
roger.lees51
Thread Starter
|
Freshman User
Joined: Jul 2011
Posts: 48
Likes: 0
All oil levels, etc are good. It seems to be prevelent at high sppeds (no particularly heavy load) and at idle. It also seems to be random, slight at times and more noticable at others.
I am not familiar with some of the codes mentioned ( left my Chilton manual at home and am on a short vacation).
Can I take it to an auto parts store and have them read the code? or is there a good reading device to purchase?
I am in northern california.
Thanks for all of the replies. I just found this site and hoped for some feed back.
Thanks,
Roger
 
Reply
Old Jul 14, 2011 | 11:52 AM
  #6  
riverrat41's Avatar
riverrat41
Postmaster
Joined: Jan 2009
Posts: 2,667
Likes: 1
From: Glen Rose,Texas
Club FTE Silver Member

Most auto parts store code readers will not pick up the codes on diesels.
We have several brothers in Cali,maybe they will see this.

As mentioned above,if you change the CPS,make sure it is from Ford.The auto parts store CPS give you funny readings/actions.
 
Reply
Old Jul 14, 2011 | 12:04 PM
  #7  
ToMang07's Avatar
ToMang07
Logistics Pro
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
CPS:Camshaft Position Sensor
Welcome to guzzle's CPS R&R Web Page<

ICP is this sensor picture below, just unplug it, see if it's oily, and then start and see if it runs better.




WTS: Wait to Start (OR) Glow Plug Light.
 
Reply
Old Jul 14, 2011 | 12:36 PM
  #8  
roger.lees51's Avatar
roger.lees51
Thread Starter
|
Freshman User
Joined: Jul 2011
Posts: 48
Likes: 0
Thank you, i will check the ICP. Can you tell me where the CPS is located?
Roger
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

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

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

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

 Brett Foote
story-3

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

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Jul 14, 2011 | 12:39 PM
  #9  
ToMang07's Avatar
ToMang07
Logistics Pro
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Originally Posted by roger.lees51
Thank you, i will check the ICP. Can you tell me where the CPS is located?
Roger
Click on the link in my last post, it has a full write-up and pics.
 
Reply
Old Jul 14, 2011 | 01:10 PM
  #10  
Stewart_H's Avatar
Stewart_H
Super Moderator
20 Year Member
Liked
Loved
Community Favorite
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
Club FTE Gold Member
Where in NorCal are you located, specifically?

Stewart
 
Reply
Old Jul 18, 2011 | 09:11 AM
  #11  
roger.lees51's Avatar
roger.lees51
Thread Starter
|
Freshman User
Joined: Jul 2011
Posts: 48
Likes: 0
still have problems

Hi,
I unplugged the cps valve and looked it over. No apparent oil or grease. The truck ran fine for two days on short trips. Driving about 1 1/2 hours it began to miss-fire again. After 2 hours the "check engine soon" light came on again.
It seems to be most noticable at high speeds after driving an hour or more, although it has done it at idle and has stalled.
Any advice would be appreciated.
Thanks,
Roger
 
Reply
Old Jul 18, 2011 | 03:57 PM
  #12  
ToMang07's Avatar
ToMang07
Logistics Pro
10 Year Member
Liked
Loved
Community Favorite
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Originally Posted by roger.lees51
Hi,
I unplugged the cps valve and looked it over. No apparent oil or grease. The truck ran fine for two days on short trips. Driving about 1 1/2 hours it began to miss-fire again. After 2 hours the "check engine soon" light came on again.
It seems to be most noticable at high speeds after driving an hour or more, although it has done it at idle and has stalled.
Any advice would be appreciated.
Thanks,
Roger
Are you talking about the CPS on the front of the engine (by the belts) or the ICP on on the driver's side valve cover?
 
Reply
Old Jul 18, 2011 | 05:07 PM
  #13  
VegasFordSD's Avatar
VegasFordSD
Laughing Gas
Joined: Oct 2009
Posts: 831
Likes: 2
From: Vacaville, CA
Originally Posted by Stewart_H
Where in NorCal are you located, specifically?

Stewart

There are quite a few FTE brothers in nor cal... maybe someone is close by and can give you a hand with some things. If you are close, I have a spare cps you could swap out to see if it clears up...
 
Reply
Old Jul 18, 2011 | 05:15 PM
  #14  
Stewart_H's Avatar
Stewart_H
Super Moderator
20 Year Member
Liked
Loved
Community Favorite
Joined: May 2004
Posts: 29,380
Likes: 118
From: Central Coast of CA
Club FTE Gold Member
Thanks, Chris.

He must have missed me asking where specifically in NorCal he's located.

Stewart
 
Reply
Old Jul 18, 2011 | 05:27 PM
  #15  
roger.lees51's Avatar
roger.lees51
Thread Starter
|
Freshman User
Joined: Jul 2011
Posts: 48
Likes: 0
Originally Posted by timmyboy76
i'd say the cps or you need to do the 50 cent mod.
What is the 50 cent mod?
Thanks,
Roger
 
Reply



All times are GMT -5. The time now is 11:46 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE