slight pulse at warm idle - Ford Powerstroke Diesel Forum
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Old 04-11-2009, 10:20 PM
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slight pulse at warm idle

i noticed when my truck idles when its up to temp it has a slight pulse like maybe 50 rpm. when its cold it does not do this. it is just enough to see the needle on the tach move a little bit and you can hear the engine change note. it pulses about every 2-3 seconds. i dont think this is a big deal but do you guys have any idea what causes this?
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Old 04-11-2009, 10:57 PM
scuffs *****

 

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mine does it every now and then. No bid deal to me.
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