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having an odd surge issue...

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Old Oct 30, 2012 | 06:06 PM
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having an odd surge issue...
I recently had to put a new turbo on that i bought from ford, my old one took a dump and broke the shaft and dumped oil out the exhaust side but none into the intake side ore the CAC tubes. since then whenever my truck is under a load like accelerating from a stop it surges and it kind of pulls... its hard to explain... but it sounds like a turbo issue but i am not completely sure about that. i can hear the loud whistle on and off on and off.... and my boost gauge fluctuates with it...
i did use the old sensor on the turbo but everything else was new.
any ideas?
thanks
 
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Old Oct 30, 2012 | 08:10 PM
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Did you have the batteries unhooked when you changed the turbo?




View Single post: VGT Relearn
 
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Old Oct 30, 2012 | 08:55 PM
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disconnect ebp if concer goes away suspect failed vgt.
 
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Old Nov 5, 2012 | 10:02 PM
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Originally Posted by cheezit
disconnect ebp if concer goes away suspect failed vgt.
Is it ok to drive for a while like this or no?
 
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Old Nov 10, 2012 | 10:00 AM
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Originally Posted by cheezit
disconnect ebp if concer goes away suspect failed vgt.
Disconnected and the problem was gone! So do I need a Vgt?
 
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Old Nov 10, 2012 | 02:58 PM
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Originally Posted by LSAtexan4x4
Disconnected and the problem was gone! So do I need a Vgt?



you unplugged the EBP Sensor right??

So I am thinking the VGT is Fine

The EBP sensor is Likely the problem

You should try to clean EBP Sensor & Tube with some Carb Cleaner

You can also check it with a Gauge at KOEO against the other pressure sensors
 
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Old Nov 10, 2012 | 03:19 PM
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Originally Posted by BLADE35
you unplugged the EBP Sensor right??

So I am thinking the VGT is Fine

The EBP sensor is Likely the problem

You should try to clean EBP Sensor & Tube with some Carb Cleaner

You can also check it with a Gauge at KOEO against the other pressure sensors
See that is what I would have thought as well... But if you read cheezit's post to me it sounds like he is saying the VGT would be the cause. Maybe he will chime in...
Also this was never an issue until the new turbo was installed making me think it would most likely be an issue with the Vgt bc it came off the junked turbo...
 
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Old Nov 10, 2012 | 04:01 PM
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Originally Posted by LSAtexan4x4
See that is what I would have thought as well... But if you read cheezit's post to me it sounds like he is saying the VGT would be the cause. Maybe he will chime in...
Also this was never an issue until the new turbo was installed making me think it would most likely be an issue with the Vgt bc it came off the junked turbo...



I see I didnt see what Cheezit wrote till you just mentioned it I think I see where he was going with it

You Could change the VGT siliniod or Maybe the VGT Wireharness has a Short just another thought things did get moved around and changed out

I suspect he mentioned the VGT since it started to act up After turbo replaced and there was no mention of Turbo issue that cause drivability problems leading up to Turbo shaft breaking and stuff just a sudden Failure

Might NOT Hurt confirm the EBP sensor would check the operating value with a Gauge

And you can Also check the VGT Operation but you would need some high tech software to be able to control the truck to check the VGT AE with Ford Enhanced would do it to or Dealer
 
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Old Nov 10, 2012 | 04:04 PM
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That is just checking ebp map and Bari right? KOEO all within .5 ish...
What happens if you unplug the VGT and drive it
 
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Old Nov 10, 2012 | 04:27 PM
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Originally Posted by LSAtexan4x4
That is just checking ebp map and Bari right? KOEO all within .5 ish...
Thats a Great Start but also need to see the Low Idel and High Idel values and also make shure it dont Jump around alot under steady throttle



Originally Posted by LSAtexan4x4
What happens if you unplug the VGT and drive it
Would think Little Boost and no power since that would leave it with NO Way to move the Veins

Its not like the ICP that uses a Default value when unpluged

Unplug the VGT and there is no control of veins/Boost
 
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Old Nov 10, 2012 | 04:33 PM
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TURBO VGT DIAGNOSTIC
http://www.forddoctorsdts.com/techni...sorBooklet.pdf




https://www.ford-trucks.com/ford-man...er%20Guide.pdf
 
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Old Nov 10, 2012 | 04:50 PM
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Awesome thanks! Could an egr valve issue cause this... Even with the egr cooler delete
 
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Old Nov 10, 2012 | 05:29 PM
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Originally Posted by LSAtexan4x4
Awesome thanks! Could an egr valve issue cause this... Even with the egr cooler delete


Wouldnt think so how is it deleated???
 
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Old Nov 10, 2012 | 05:34 PM
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With a new pipe in the exhaust and the stainless coolant line... Don't really get the question.
I've heard a VGT can throw a p0401
 
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Old Nov 10, 2012 | 05:55 PM
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basicly what you are removing by disconnecting the ebp is the pcm imput for vgt so the vgt will be more stable but still work. basicly it stops the vgt from freaking out.
imo find a vgt for it and try.
and yes a vgt will throw a p0401, p0299,p132b, but a stuck turbo will as well
 
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