2002 7.3 F250 No Start - Diesel Forum - TheDieselStop.com
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > 99 & up 7.3L Power Stroke Engine and Drivetrain

99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 05-13-2010, 12:54 PM   #1 (permalink)
Junior Member
 
Join Date: May 2010
Posts: 2
My Photos: (0)
Feedback Score: 0 reviews
2002 7.3 F250 No Start

This is what happend. The thing shut down at the end of an exit ramp so I had it towed. The next day I added 5 gal. of fuel still no start after sevral tries. I changed the fuel filter and was geting 60 psi. Oil level is good and hpop is up to correct level. I then droped the tank to inspect the screen, looks fine. Next I replaced both clips under the valve covers as I have had to do in the past still no luck. Next I replaced the CPS again, used a new factory one (gray).

After not having any luck I did notice the fuel pump on the rail sounded like it was starving at the end of it's cycle with KOEO. So went ahead and replaced that. I tried cranking some but then remembered that I had unpluged the fuel pressure regulator so went to plug that back in. Here is the bad part. When I pluged it back in the key was on and now my fuel pump relay is rapidly clicking. I've checked the fuses, swaped the relays and the batterys are both hot. I have a scanner (cheap one) of course it didn't pull anything before but for the heck of it I tried again because the check engine light now stays on while cranking and the scanner says check signal cable wich tells me I lost power some place? I also noticed that the pressure regulator has some movement not sure if this is normal?

I would gladly take any advice. I know... go get a good scanner but this is more educational since I am a mechanic. I'm just not a diesel one.

THANKS
turf1 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 05-13-2010, 01:28 PM   #2 (permalink)
Lifetime Supporting Member
 
klhansen's Avatar
 
Join Date: Jan 2003
Location: Eagle River, Alaska
Posts: 20,134
My Photos: (175)
Feedback Score: 0 reviews
Quote:
Originally Posted by turf1 View Post
...but then remembered that I had unpluged the fuel pressure regulator ...
unplugged the fuel pressure regulator?? Are you talking about the IPR (down below the fuel bowl on the HPOP)? The actual fuel pressure regulator (where the fuel return line connects) doesn't have anything electrical plugged into it.

Clicking relays usually mean low voltage, which could be from bad connections at the battery clamps or elsewhere. I'd double check them. Low voltage could also be the cause of your "check signal cable" on your scanner.

Swapping parts that may not need to be swapped is "educational"??
__________________
First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.

Hard or no-start? Check Here
klhansen is offline   Reply With Quote Quick reply to this message
Old 05-13-2010, 01:40 PM   #3 (permalink)
Senior Member
 
Join Date: Apr 2004
Location: vineland, NJ
Posts: 161
My Photos: (0)
Feedback Score: 0 reviews
could be a bad pcm. My truck would crank all day but wouldn't start, checked fuel,batteries,oil, starter and everything ended up being a bad pcm. It was the last thing I would of guessed.
__________________
2000 7.3 4wd super cab, leveling kit w 33's.AFE stage 2 intake, banks quick turbo assembly,adrenaline hpop, itp regulated return, 4 inch turbo back exhaust, fully built tranny.
SABU is offline   Reply With Quote Quick reply to this message
Old 05-13-2010, 01:50 PM   #4 (permalink)
Lifetime Supporting Member
 
klhansen's Avatar
 
Join Date: Jan 2003
Location: Eagle River, Alaska
Posts: 20,134
My Photos: (175)
Feedback Score: 0 reviews
Quote:
Originally Posted by SABU View Post
could be a bad pcm.
Yeah, but he should check the cheap and easy stuff first.
__________________
First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.

Hard or no-start? Check Here
klhansen is offline   Reply With Quote Quick reply to this message
Old 05-13-2010, 01:52 PM   #5 (permalink)
Junior Member
 
Join Date: May 2010
Posts: 2
My Photos: (0)
Feedback Score: 0 reviews
yea sorry it was the IPR and I plan to double check some things this afternoon
turf1 is offline   Reply With Quote Quick reply to this message
Old 05-13-2010, 02:00 PM   #6 (permalink)
Lifetime Supporting Member
 
klhansen's Avatar
 
Join Date: Jan 2003
Location: Eagle River, Alaska
Posts: 20,134
My Photos: (175)
Feedback Score: 0 reviews
Quote:
Originally Posted by turf1 View Post
yea sorry it was the IPR and I plan to double check some things this afternoon
Unplugging the IPR will definitely cause a no-start. It needs voltage to close and let the HP oil pressure build. You can unplug and re-plug it all day long with the key on and it shouldn't affect the PCM. Same for the ICP sensor, although the engine should run with it unplugged.
__________________
First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version), AIS, coolant filter w/"hokum" bracket, regulated return, heated mirror mod, lighted cupholder, Marinco heater plug-in.

Hard or no-start? Check Here
klhansen is offline   Reply With Quote Quick reply to this message
Old 05-13-2010, 07:43 PM   #7 (permalink)
Junior Member
 
Jimco's Avatar
 
Join Date: Feb 2010
Location: Columbia, MD
Posts: 29
My Photos: (0)
Feedback Score: 0 reviews
If it died on you while driving is it possible cps went bad? When mine stopped starting it actually ended up being the 2 diodes in the under hood fuse box keeping power getting to the pcm... good luck!
__________________
2001 F250 PSD SB 4x4 Auto
Jimco is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > 99 & up 7.3L Power Stroke Engine and Drivetrain

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Forum - TheDieselStop.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:26 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.