05 rough idle blows smoke shakes during lock up - Ford Powerstroke Diesel Forum
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Old 04-20-2013, 08:59 AM
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05 rough idle blows smoke shakes during lock up

so far I have replaced 2 injectors no change in idle quality. It does smoke less when idling. Now have longer then normal crank time to fire it. All of these things just started after doing an egr delete. Today I took it for a drive and when the converter locks it starts to shake really bad. Ficm voltage never drops below 48. Icp pressure takes a while but jumps to 600 before it fires then idle is around 570psi. The cylinder contribution still shows 1 and 4 being lower contributors ( the ones with new injectors) was going to run it through the gears and drive it hard as per ford tsb on air in oil system after oil rail removal. But then I blew a charge pipe off. Anything go should look for? If I unplug the icp sensor it fires right up. Should I put some miles on it? I'm almost afraid to with the way it shakes and smokes.
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Old 04-20-2013, 09:21 AM
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The air should purge after 30 mins driving at operating temperature...

What is your Static Fuel Pressure under load (Very Important)

Have you cleared all codes?

Did you update the rail plugs, stand pipes and high pressure oil pump connector when it there? (STC Connector) I'm concern with the slow to build pressure comment?

Are you getting any ICP codes?

Did you put in Ford injector or aftermarket? Typically if the truck has 150,000 - 200,000 on it we do ALL 8 injectors.

Dave
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Old 04-20-2013, 09:45 AM
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Thanks for the help! No codes besides #1 contribution code I have not updated dummy plugs or stand pipes but have the updated stc fitting. The injectors except 1 and 4 (napa injecotrs) only have 50k on them dont know what the other 6 are they were done before i bought te truck. I honestly shotguned the injectors after the contribution test which didn't fix it. I have drove it for a few half hour trips back and forth to town. Of course ford up here doesn't stock the stand pipes. The temp is about 50 or so in my shop where it is kinda stuck right now. Worst thing is I bought the truck drove it for 1 week with no issues changed the oil (rotella t6) and ford filter and did the egr delete and had no luck since. Ill have to grab fuel pressure gauge from work I put the upgraded "blue" spring in the regulator.

Last edited by 05stonelariat; 04-20-2013 at 09:49 AM.
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Old 04-21-2013, 05:17 AM
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Checked static fuel pressure key on goes to 60 psi idle is the same and when I brake stalled it it never changed. How ever I did notice when you turn the key off the pressure drops off fairly quick... Is this normal? Dynamic pressure drops to 35 psi at idle!
Once again it was pretty hard to start. Thinking if I get the dummy plugs and new stand pipes It should fix it. I remember now when I was putting my truck back together I jumped the starter relay to crank it a few times to prime turbo after rebuilding it. Suppose that could have blown the seals out

Last edited by 05stonelariat; 04-21-2013 at 06:13 AM.
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Old 04-21-2013, 05:32 AM
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If by unplugging the ICP sensor, the truck starts right up, then you need a new ICP sensor. ICP sensors can also cause the draiveability issues you mentioned.

Fuel pressure dropping to zero right shut off is the way it is supposed to be.

MikeB
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Old 04-21-2013, 06:49 AM
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Like mentioned put a new ICP Sensor in, if you do end up having to go under the valve covers to do updates I would seriously consider 8 new ford injectors, nothing like the sound of 8 new injectors in the 6.0 Powerstroke.

If you can not find the HPOP updates we stock lots and can send a set up for you.
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Old 04-21-2013, 07:19 AM
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I agree, if she starts with your ICP sensor unplugged, bad sensor. Also, make sure your sensor has the yellow (that's what color mine is) gasket, squishy thing in there that makes sure you get a good seal when you plug it in...mine came out very very very easily, you may be just be getting a bad connection as well.
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Old 04-21-2013, 07:20 AM
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I noticed when I unplug it though it still runs rough.
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Old 04-21-2013, 07:22 AM
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There is an updated ICP harness available as well... I am still not liking those 2 injector...
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Old 04-21-2013, 07:40 AM
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Did you happen to do a blue spring upgrade? I thought I had no injector issues at all before I did mine, so I did it for piece of mind. After I put the blue spring in and fired her off, I got #5 contribution...replaced that bad injector and everything is fine.
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