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Old 04-24-2014, 06:35 AM
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Truck jerking... Turbo related (new thread)

Starting a new thread to hopefully get more feedback.

Driving down the highway today, and it happened on two separate occasions. My truck would randomly start jerking back and forth for a minute or two then stop. Checked my fuel pressure gauge and that was not it... Then I noticed my turbo boost gauge and sure enough, my boost was jumping and dipping to match the jerking. Usually my boost is at about 6 on the highway on level ground. When it was jerking it would go between 5.5 and 7.5 and later saw it dip to 3 at one point.

Any ideas as to what it could be?

Thanks again guys!
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Old 04-24-2014, 07:27 AM
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TPS could be acting up. Your boost is following the trucks' performance. Might also be a sticky / bad IPR signal, that the pcm is try'n to fix
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Old 04-24-2014, 11:22 AM
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Good to know, thanks. Is this something that I will show up on a code scan?
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Old 04-24-2014, 11:46 AM
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50 CENT fix maybe?
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Old 04-24-2014, 07:39 PM
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I checked out that uvch video. I would guess the problem would be more constant if it were loose, but who knows.

I'll definitely read into other people with that problem and their symptoms. Thanks for the response.
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Old 04-28-2014, 11:35 AM
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Not necessarily because you may have it tight enough for it to stay generally there but not tight enough for a good connection.
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Old 04-28-2014, 01:53 PM
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Forgot to add this part in, when it starts chugging, I can give it as much throttle and it responds perfectly with power. I also have not had a check engine light yet.
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Old 04-28-2014, 01:54 PM
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Sound like injector failure to me
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Old 04-28-2014, 03:04 PM
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If it is the injectors, could a single bad injector cause the symptoms I feel or would it be a few of them?

Also, do you happen to know if a OBDII code scanner iPhone app could read a bad injector code? Just bought one but am waiting to get my truck back from getting it undercoated.

Thanks for the help!
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Old 04-28-2014, 03:08 PM
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Not sure, I have one and it works pretty good I wouldn't see why not. But it may not be failure from the solenoid, may be mechanical failure that may not throw a code. Is the check engine light on? May be one may be multiple, you never know with these beasts
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bucking, jerking, turbo

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