Ford F-250 & Ford F-350 The heavier duty full sized trucks from Ford, offering bigger, more powerful engines and drivetrains for the abuse they may go through in the workplace.

6.0 start rough idle. PLEASE HELP

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  #1  
Old 07-03-2018, 02:21 PM
Bigred250's Avatar
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Default 6.0 start rough idle. PLEASE HELP

I have a 03 f250 6.0... Recently died while running. I assumed icp. Was covered in oil so replaced icp and its pigtail. No luck. When icp is unplugged it will start and idle really rough then die. I have a snap on solus scanner but not completely familiar with pids and values. Can someone please help me with this nightmare. Call/txt if need be which would be quicker but any help is appreciated. Thanks
 
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Old 07-03-2018, 05:02 PM
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Did you install a Ford ICP sensor? Some aftermarket ones really don't work well.

When you are experiencing the rough idle, it would be helpful to see the following PIDs:
ICP volts
ICP pressure, psig
IPR % duty cycle
FICM MPower
FICM LPower
FICM VPower
rpms
v-reference (5V) voltage

Also:
- verify that your air filter "filter minder" is NOT indicating that the filter is plugged
- verify that your dash oil pressure gauge is reading in the normal range
- if you aren't using an OEM oil filter and OEM oil filter cap, then I would recommend installing them
 
  #3  
Old 07-04-2018, 09:03 PM
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Truck runs rough now with icp unplugged. Reads 5v...return wire is 0v... When icp plugged in it wont start. Reads 0v and return wire is 0v..short or ground maybe?
 
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Old 07-04-2018, 09:23 PM
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IMO, yes .... a short to ground
 
  #5  
Old 07-04-2018, 09:27 PM
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I will keep you guys updated
 
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