Weird issue with my 05 350 today - Ford Powerstroke Diesel Forum
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Old 01-08-2014, 09:19 PM
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Weird issue with my 05 350 today

Ok I was out this AM drove the freeway for 25mi then got off. After about 1mi I came to a red light. I let off the throttle and was coasting until the light turned green. Pressed on the throttle and something was wrong, the truck had no power and was puking black smoke. Idled it to my destination about 1/4mi away and shut it off. Finished my business (approx 1 hr) and started it up, fired up and idled just fine. Pushed on the throttle and again no power, engine sorta chugging, black smoke, returned to idle idles fine. I said heck with it and hammered the throttle this time, same chugging and smoke for a quick sec or two then cleared and started to run fine. Went on with the rest of the days stops (50-60 mi) no further mishaps or problems.

So the question is what the heck was going on here, could this issue be caused by a clogged EGR valve? Or should I be looking somewhere else? The truck is bone stock no suspension or eng mods I am the only owner.

Thanks in advance for any thoughts on this.

05 sd
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Old 01-09-2014, 09:32 AM
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You have any way to read the trouble codes? I had a similar problem a few years back and I used to have to put it in neutral and rev the smoke out and it would go fine after that.Problem with mine was the back pressure sensor.Had it replaced and never had that issue again.
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Old 01-09-2014, 01:55 PM
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Hi mrenn, I did check it and no codes were present, which makes troubleshooting that much more problematic.
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Old 01-09-2014, 01:58 PM
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Sometimes too it is from the vanes in the turbo sticking
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Old 01-10-2014, 08:02 PM
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Thanks Charlie, that is not something that I would have thought of. Is there any way to check that other than to teardown the turbo?
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Old 01-10-2014, 08:43 PM
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if you have a way to monitor PID's you can watch the vgt duty cycle. also once you start it they usually sweep within a few seconds, you can hear it in the exhaust. Depending on the ECM strategy, it should do a sweep at long stop lights too.

My truck stock wouldn't smoke a bit! even from a dead stop idle with a flat WOT start, no smoke.

Not so much the case any more.. I wont go WOT from an idle, and if I did, i'd have a good getaway from all the smoke once the turbo caught up. then it would be tire smoke
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Old 01-11-2014, 09:27 AM
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Quote:
Originally Posted by Teachagmech View Post
if you have a way to monitor PID's you can watch the vgt duty cycle. also once you start it they usually sweep within a few seconds, you can hear it in the exhaust. Depending on the ECM strategy, it should do a sweep at long stop lights too.

My truck stock wouldn't smoke a bit! even from a dead stop idle with a flat WOT start, no smoke.

Not so much the case any more.. I wont go WOT from an idle, and if I did, i'd have a good getaway from all the smoke once the turbo caught up. then it would be tire smoke
^^ That's how I know to do other than tearing one down and cleaning it.
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Old 01-13-2014, 06:13 AM
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No I have no way at present to monitor PID's, truck is bone stock no mods or add-on's of any kind. Might be time to check into some type of monitoring system tho.
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Old 01-13-2014, 06:30 AM
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Do you have an android smart phone?
The torque App cost me less than $20 in total. The app is $5 and the adapter was like 11.50 shipped to my house from Amazon. I can read everything the pcm is reading. It can read and clear trouble codes, and you can even set up different car profiles if you want to move from vehicle to vehicle.

Best $18 I've spent in a long time

Sent from a phone that makes calls too!
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Old 01-13-2014, 09:30 AM
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check egr valve
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