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Old Jun 14, 2009 | 10:19 PM
  #16  
murph77's Avatar
murph77
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From: DeKalb, Ill.
Originally Posted by fmc400
If you can get the motor to stop dieseling without fixing the EGR system as I've described, then you should probably buy a lottery ticket while you're on the lucky streak.
Right on the money.
Like I asked in my post script, can you reinstall the smog stuff you removed?
Sounds like this is the cause of your problems.

Good luck,
Murph.
 
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Old Jun 15, 2009 | 08:19 AM
  #17  
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Greyf100
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i've had the EGR and smog stuff off for about a month and driven 1100 miles since then, This just started in the last week.
 
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Old Jun 15, 2009 | 08:43 AM
  #18  
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fmc400
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From: Austin, TX
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We're not claiming that we are 100% sure this is your problem. What we can tell you is running the engine this way makes it much more sensitive to the problems you are describing. I have mentioned several other minor things to check first (idle speed, vacuum leaks), but ultimately you are opening up a can of worms with the shade-tree smog removal approach. As such, it's very hard to justify why this problem would occur on some days and not others, or after a certain point in time and no sooner, because the motor is operating far outside its designed conditions.

These are the facts; we have outlined them very clearly and it's up to you as the truck owner to decide what you actually follow through with. If you find a vacuum leak and plug it, or lower your idle speed, or some other quick fix that resolves the issue, by all means consider it a job well done. But as fellow forum members who have "been there done that" many times over with many different people, it's important we inform you of the facts and risks so that you can make an informed decision.

 
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Old Jun 15, 2009 | 02:28 PM
  #19  
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and i do really appreciate the help!!!

my ultimate goal is to run a holley 390, offy or clifford intake, and EFI manifolds....i just need to keep the "stock" setup running until such a time that i can get all the parts together.

i will knock the idle down a bit and see if that helps.

Thanks again, Rob
 
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Old Jun 15, 2009 | 03:23 PM
  #20  
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sixing
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You could shut off engine while in drive, if auto, or in gear and pop clutch, if manual
 
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