vibration when idle problem - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 11-20-2012, 03:58 PM Thread Starter
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vibration when idle problem

when I'm at idle in park or in drive with the break on and its up to temp i feel like a surging or pusling vibration that comes and goes every few seconds. if i disconnect my icp it idles a little rougher but the bad vibration stops..would that mean my icp is bad or injector problem..i took it to a shop and they ran tests on everything and said the motor and injectors were all good
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post #2 of 4 Old 11-21-2012, 07:15 PM
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This is a total shot in the dark, but the way you described how it comes and goes makes me think about the AC compressor clutch possibly seizing and adding a funny load to the motor causing the vibration.

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post #3 of 4 Old 11-21-2012, 07:27 PM
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if their is oil coming through the icp replace it, its bad.
i would check fuel pressure too.
i had a weird vibration too, i replaced fuel pressure relief, and i had a bad icp which i replaced too
my weird shudder/vibration went away

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post #4 of 4 Old 11-24-2012, 04:40 PM Thread Starter
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no oil coming through the icp..how could i check the fuel pressure and what should it be at? thanks!
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