2000 7.3 Died while driving - Ford Powerstroke Diesel Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 35 Old 09-21-2010, 06:26 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Aug 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
2000 7.3 Died while driving

Yesterday my 2000 7.3 (145k, oil changes every 3k) died while I was driving it. Got it off the road and purged the water accumulator. Still would not start. It would want to start, but couldn't stay running.

I felt certain it was the camshaft postion sensor, had it towed to the Ford dealer and they replaced the camshaft position sensor, but this did not fix it.

They recommended that they do a diagnostic to determine problem.

Have not found a cause yet, but the service advisor said they thought it was a fuel supply issue, something about sucking air with the fuel, rust in the fuel tank, needed to get a bigger lift freed up to check out tank, etc. (Isn't the fuel tank plastic?)

When the service advisor recommended the diagnostic, she said that it might be low oil pressure, I asked if she meant low fuel pressure, but she said "no, low oil pressure". The low oil pressure doesn't make any sense to me. Am I missing something?

I'm not sure that the mechanic at the dealer is all that familiar with diesels.

Advice on this issue would be greatly appreciated.

Thanks,

Bill
FarmerBill is offline  
post #2 of 35 Old 09-21-2010, 06:37 AM
Compression Ignition Addict
 
partsguy84823's Avatar
 
Join Date: Dec 2009
Location: Kansas
Posts: 289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Low oil pressure does make sense. The powerstroke uses a HEUI injection system, which in its simplest form means that instead of delivering high pressure fuel to the injector via an injection pump, low pressure fuel is delivered to the injector and the injector uses oil which has been pressurized to between 500 and 3200 psi to drive an intensifier piston which pressurizes and injects the fuel. I don't know the exact number, but I think the truck needs to make 500psi of High Pressure oil before the injectors will fire, so low oil pressure could cause the truck to not start.

Here is a link on how the HEUI system works. Its good reading. CLICK HERE

Oh ya, welcome to the org.

Chris
T.A.P.S Member

Quote:
Originally Posted by e99f2506p View Post
I can't imagine we'd be welcome at hooters very long if there was a bunch of half drunk guys in the back sitting around whistling and humming trying to make the perfect 7.3 turbo noise...
2003 F250 XLT-Sport(7.3) 4x2 CCSB - Sonic Blue
  • AEM Brute Force Intake
  • 4" Magnaflow Turbo Back Exhaust
  • Gloshift 3in1
  • SuperChips MAX MICRO

Last edited by partsguy84823; 09-21-2010 at 07:07 AM. Reason: Added Link
partsguy84823 is offline  
post #3 of 35 Old 09-21-2010, 06:39 AM
Powerstroke.org Fanatic
 
Join Date: Dec 2006
Posts: 94
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Need oil pressure to fire the injectors.
RRSA is offline  
post #4 of 35 Old 09-21-2010, 07:09 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Aug 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thanks, I learned something. It sounded like they were going to check the oil pressure first.

Bill
FarmerBill is offline  
post #5 of 35 Old 09-21-2010, 07:14 AM
Compression Ignition Addict
 
scagle1's Avatar
 
Join Date: Jan 2008
Posts: 1,342
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 13
Thanked 53 Times in 50 Posts
Feedback Score: 0 reviews
had same problem a few months back and mine was the lift pump

Sold 01 350 6" on 37's and mild mods, 00 X 4" on 35's, 02 f350 4" 35's modded from fan to drive shaft, ridin the 03 with nose conversion with 125k and counting upwards slowly.
Never had CNC's poo on any of it, never will.
scagle1 is offline  
post #6 of 35 Old 09-21-2010, 07:18 AM
Compression Ignition Addict
 
partsguy84823's Avatar
 
Join Date: Dec 2009
Location: Kansas
Posts: 289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
No problem, thats why we're here.

When you're cranking the truck and it tries to start, are you getting any smoke out of it? If so, what color?

Have you checked your fuses? The fuel bowl heater has been known to ground out and blow the same fuse that runs the PCM and whalaa, no start.

You said you drained the fuel/water seperator? -Is it filling back up with fuel? Have you changed the fuel filter? Did you prime the fuel system after draining the fuel bowl (turn the key on untill the fuel pump stops running, three-ish times)?

Was the truck running or starting funny before it had its random death?

Chris
T.A.P.S Member

Quote:
Originally Posted by e99f2506p View Post
I can't imagine we'd be welcome at hooters very long if there was a bunch of half drunk guys in the back sitting around whistling and humming trying to make the perfect 7.3 turbo noise...
2003 F250 XLT-Sport(7.3) 4x2 CCSB - Sonic Blue
  • AEM Brute Force Intake
  • 4" Magnaflow Turbo Back Exhaust
  • Gloshift 3in1
  • SuperChips MAX MICRO
partsguy84823 is offline  
post #7 of 35 Old 09-21-2010, 07:36 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Aug 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I turned the ign on a couple times and waited about 30 seconds. Also told the mechanic that I had purged the water accumulator.

The fuel bowl heater had come apart the last time I changed the fuel filter. The dime sized silver discs had come loose, so I cleaned the fuel filter chamber out real good and only put the part of the heater assembly back in that the bottom of the filter has to nest into. (I ordered the aftermarket part and was going to put it in before winter.)

Doing nothing funny before it stalled.

Can't comment on the exhaust color.

Hey, just spoke with the service advisor. He mentioned yesterday something about air mixed with fuel. I just read something about a lift pump that fails will allow the engine to suck enough fuel through the lift pump for the engine to run, but that this allows air to mix with the fuel. When I asked if it could be the lift pump, he said what's that, and that the only fuel pump is on the frame rail. What am I missing?

Thanks,

Bill
FarmerBill is offline  
post #8 of 35 Old 09-21-2010, 07:46 AM
Compression Ignition Addict
 
partsguy84823's Avatar
 
Join Date: Dec 2009
Location: Kansas
Posts: 289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
That fuel pump is what would be called a 'lift pump' by some.

Lift Pump, Fuel Pump, Frame Mounted Fuel Pump. - Six in one, half-dozen in the other. On trucks with injection pumps (IDI's, Cummins, Duramax, Common Rail Powerstroke... Etc) There were two fuel pumps, an injection pump which timed and delivered fuel to the injectors (or pressurizes a fuel rail on a common rail engine), and a 'lift pump' which 'lifted' (delivered) fuel from the tank to the injection pump. Both are fuel pumps, but both perform different tasks.

The powerstroke only has one fuel pump, the 'lift pump' because it uses high pressure oil inject fuel. So there is no real ambiguity. Its just the fuel pump.

That pump pulls instead of pushing, this can cause the fittings to draw in air. If the truck was running okay before it died out of nowhere, I would doubt that is your issue. (Not to say it isn't an issue on your truck, but its probably not the pressing issue.

Chris
T.A.P.S Member

Quote:
Originally Posted by e99f2506p View Post
I can't imagine we'd be welcome at hooters very long if there was a bunch of half drunk guys in the back sitting around whistling and humming trying to make the perfect 7.3 turbo noise...
2003 F250 XLT-Sport(7.3) 4x2 CCSB - Sonic Blue
  • AEM Brute Force Intake
  • 4" Magnaflow Turbo Back Exhaust
  • Gloshift 3in1
  • SuperChips MAX MICRO

Last edited by partsguy84823; 09-21-2010 at 07:52 AM.
partsguy84823 is offline  
post #9 of 35 Old 09-21-2010, 07:54 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Aug 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What is the PCM?

Sounds like if the fuel pump is sucking air, this is happening in a fitting between the fuel pump and the tank, right? Or maybe inside the tank? The tank is about 3/4 full right now.
FarmerBill is offline  
post #10 of 35 Old 09-21-2010, 08:00 AM
Compression Ignition Addict
 
partsguy84823's Avatar
 
Join Date: Dec 2009
Location: Kansas
Posts: 289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
PCM = Powertrain Control Module. It is the brain of your drivetrain. It controls your whole drivetrain except the job of actually sending the current to actuate the injector. (The IDM-Injector Drive Module does that).

I would guess if the tank is over 1/2 full, the problem is outside the tank, between the tanks pick-up and the pump.

Chris
T.A.P.S Member

Quote:
Originally Posted by e99f2506p View Post
I can't imagine we'd be welcome at hooters very long if there was a bunch of half drunk guys in the back sitting around whistling and humming trying to make the perfect 7.3 turbo noise...
2003 F250 XLT-Sport(7.3) 4x2 CCSB - Sonic Blue
  • AEM Brute Force Intake
  • 4" Magnaflow Turbo Back Exhaust
  • Gloshift 3in1
  • SuperChips MAX MICRO
partsguy84823 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
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:
OR

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.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome