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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.

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  #1  
Old Thu, December 31st, 2009, 02:53 PM
Bushwakd Bushwakd is offline
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Default Rolling Idle
What would cause a rolling idle? After engine is up to temp I get a rolling idle. Is this in the tuning? It seems to roll up and down 50 rpm or so.
I am trying to gather some information so i can raise the issue with my tuner.
A list of mods are in my sig.
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  #2  
Old Thu, December 31st, 2009, 03:12 PM
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IPR duty cycle too high in lower range.
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  #3  
Old Thu, December 31st, 2009, 04:42 PM
Bushwakd Bushwakd is offline
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Quote:
Originally Posted by 907dave View Post
IPR duty cycle too high in lower range.
Is this something that can or should be adjusted in tuning or is it the HPOP making more oil pressure that can be utilized.
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Old Thu, December 31st, 2009, 04:46 PM
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Needs tuning adjustment. THEN it will work flawlessly.
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  #5  
Old Thu, December 31st, 2009, 05:08 PM
Bushwakd Bushwakd is offline
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Quote:
Originally Posted by cleatus12r View Post
Needs tuning adjustment. THEN it will work flawlessly.
Gotcha
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Real Trucks Don't Have Spark Plugs
2000 F-250 LWB CC 4x4 AT
BTS Swamps 200/30% inj. 38R 1.15 hsg Stealth stage II hpop Spearco 6.0 IC Juiced IDM ITP RR
The Smoke Don't Mean It's Broke
419 hp/858 tq
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  #6  
Old Fri, January 1st, 2010, 05:48 AM
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Exactly what Cody said. The Stealth is causing excessive ICP at idle and the PCM is constantly hunting back and forth to stabilize it. Some minor adjustments to your tuning would quickly resolve that.

Take care.
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Old Fri, January 1st, 2010, 01:54 PM
Bushwakd Bushwakd is offline
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Thanks Bill for reconfirming what Cody had mentioned.
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Real Trucks Don't Have Spark Plugs
2000 F-250 LWB CC 4x4 AT
BTS Swamps 200/30% inj. 38R 1.15 hsg Stealth stage II hpop Spearco 6.0 IC Juiced IDM ITP RR
The Smoke Don't Mean It's Broke
419 hp/858 tq
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