wont idle when started cold - Ford Powerstroke Diesel Forum
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Old 10-15-2013, 05:51 AM
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wont idle when started cold

So I have been fighting a miss in this truck for a year. After all new injectors problem solved. Also on list has new icp, uvh, glow plugs, glow plug controller, cps, and ipr. Oh and a new rebuilt idm. Runs great but now all of a sudden when I start it cold it will fire then die. Fire then die. If I give if throttle I can keep it running till finally run on its own. Or it will start and idle like it has the biggest cam in the world in it then it will calm down and idle smooth.

What could be causing this now. Glow plugs about year old and controller about 6 months. Never had this problem before.
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Old 10-15-2013, 07:53 AM
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What kind of oil are you running? Google "cold start romp" and find some videos online to see if that is the symptom you have.
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Old 10-15-2013, 07:50 PM
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if its time for an oil change, switch to synthetic.

are you using the stock glow plug relay? its junk.
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Old 10-16-2013, 05:39 AM
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not stock glow plug relay and using dino 15 40. This is same oil as ran last winter with no problems. I ran t6 for a while in it but it burns to much oil on trips to keep that in it.
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Old 10-16-2013, 05:43 AM
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I just googled cold start romp and that's exactly what it is doing. I can't say its not oil cause I used the same last winter but could be. I might check the neutral safety
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Old 10-16-2013, 09:33 AM
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It sounds like it running out of oil like you have a drain back issue, its firing off the oil that is in the pump and heads and then shuts off cause the low pressure oil pump has not fed the high pressure oil pump to keep it running, a weak low pressure oil pump will cause this issue.
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Old 10-16-2013, 02:51 PM
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how long do you wait from the moment you turn the key on to when you start it?

you need to wait atleast 15-30 seconds depending on how cold it is, possibly longer.

have you checked your icp sensor? if theirs oil coming through it its time for a new one. bad icp gave me the romps when mine was bad.
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Old 10-16-2013, 04:59 PM
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Maybe you can try running Rotella T 10W30 and check your consumption on that? Ford actually recommends 10W30 in the cold anyway.
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Old 10-16-2013, 05:49 PM
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Icp isn't 8 months old not saying it didn't go bad. Il check it again. I wait at least that before firing it up. Sometimes I will even cycle them 3 or 4 times. It depends on temp mainly. Right at freezing or colder its been bad. If it close to 40 or above its not bad at all. And its only first start of day to. Oil change is up soon so guess go back to synthetic and try it again. Just seems weird when its never done this before.
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Old 10-16-2013, 07:30 PM
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ive had an icp fail at 6 months.

thats my luck though.

try plugging the truck in and see what that does. the block heater cord is tied up front if youve never used it before, drivers side up.

you dont need to cycle the plugs they will stay on up to two minutes.
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