12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Idle issues

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Old 11-16-2017, 07:10 AM
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Default Idle issues

94 3500 12valve auromatic bone stock. In mornings it starts and idles fine at 700. After warm up and driving 15 miles normally, idle is at 1000. Any thoughts or anyone had same issue? Thanks
 
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Old 11-16-2017, 07:11 AM
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Default FYI

The idle mentioned is in park not in gear.
 
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Old 11-16-2017, 07:13 AM
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Default Idle

This just started yesterday, been fine forever wondering what could have changed. If it were idle stop on pump linkage it would be high all the time
 
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Old 12-16-2017, 12:40 PM
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not sure if my truck is just the odd duck but my idle fluctuates a few hundred rpms of idle with the outside air temp. higher in the winter lower in the summer and I just adjust it back to where I want it!
 
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Old 12-16-2017, 12:43 PM
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My truck idles higher with colder air temp and lower with hotter air temp, also in the winter the idle raising as the engine warms up is normal!
 
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Old 12-18-2017, 10:19 AM
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