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1994.5 - 1997 7.3L Power Stroke Diesel  

Running/idling rough ....sometimes

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Old Dec 22, 2006 | 08:30 PM
  #1  
Lanny Sutton's Avatar
Lanny Sutton
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Running/idling rough ....sometimes

My '95 with a little over 112K fell on it's face the other day,started running rough (CEL came on) with not enough power to get out of it's own way.I let it sit for a couple of days before starting it and for 30 to 45 seconds it ran fine,then started acting up again and the CEL came on.I've started it a few times since and same thing happens over and over.Anyone had this happen?Any ideas where to start looking?

Thanks,
Lanny
 
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Old Dec 22, 2006 | 09:07 PM
  #2  
1997F-350's Avatar
1997F-350
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probably some burnt external plugs, vc gaskets or uvc's...
 
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Old Dec 22, 2006 | 09:14 PM
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Did you do anything different in the week or so before i.e. change the oil change any thing? I agree with "D" check out the plugs and wiring and pins inside and out of the valve covers. if no joy let us know. Is it a manual transmission?
 
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Old Dec 22, 2006 | 09:25 PM
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Yes,it's a manual.Changed the glow plugs maybe 2 weeks before it started acting up.

Lanny
 
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Old Dec 22, 2006 | 09:32 PM
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bkcowboss
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I am gonna say that when you changed the glow plugs you could of had an injector wire bump a rocker arm and it took that long to wear through, or you may have had connector come loose inside the valve cover, so you are getting a short to one or more of your injectors. Pull the valve covers and you will probably find your problem. Do not however rule out your DMF on your manual tranny, but I am not leaning that direction.
 
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Old Dec 22, 2006 | 09:37 PM
  #6  
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Lanny Sutton
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DMF has been gone for awhile.Besides this is a problem with the engine running/idling rough with no power,sounds like it's running on 6 or 7 cylinders.......maybe fewer.

Lanny
 
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Old Dec 22, 2006 | 09:41 PM
  #7  
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Can anyone explain why it runs fine for 30 to 45 seconds before it starts "missing"?Engine oil level is well into the safe zone.

Lanny
 
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Old Dec 22, 2006 | 09:42 PM
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bkcowboss
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Yeah probably an under valve cover wire issue, I saw a link to some replacement parts for that I am doing a search right now.
 
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Old Dec 22, 2006 | 11:33 PM
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maybe your hpop is not putting out enough psi. Try doing a compression check on it also.
 
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Old Dec 23, 2006 | 10:57 AM
  #10  
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1997F-350
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Originally Posted by 1997F-350
probably some burnt external plugs, vc gaskets or uvc's...
!!!!!!!!!!
 
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Old Dec 23, 2006 | 01:54 PM
  #11  
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I am with "D" on this one
 
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Old Dec 24, 2006 | 10:35 AM
  #12  
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Lanny Sutton
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From: Central Ky.
Now it's running rough when it first starts and sometimes will smooth out after running for a few minutes.I need to know which bank cylinders 1,3,5 &7 are on,driver's side or passenger.

Lanny
 
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Old Dec 24, 2006 | 12:04 PM
  #13  
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1997F-350
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From: SHELTON, WA
front

ds ps
2 1
4 3
6 5
8 7

rear of truck
 
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Old Dec 27, 2006 | 07:04 PM
  #14  
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Lanny Sutton
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Here's the codes we pulled,P0107,P0235,P0476 & P0279.Wouldn't you know it,mechanic I know that works at a Ford dealer shows up with the code reader and it never acted up.Can anyone tell me anything about these codes?


Lanny
 
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Old Dec 28, 2006 | 09:41 AM
  #15  
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LEVEL10
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From: new jersey
Hello
Please check out our web site. We have listed the trouble codes for ford trucks. This may help you find your problem. If you need further help, please contact me.

Level 10 Tech
973-827-1000
http://www.levelten.com/store/F250_codes.htm
 
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