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Old 07-30-2014, 07:41 PM
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Turbo surging in 4th gear only

When I am driving down the highway my turbo will surge. I can watch it on the gauge going from 25 down to 20 and right back up it will do this until I let off or change gears.

Is this normal for a stick shift?

Changed the fuel filters and nothing changed. Thanks.
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Old 07-30-2014, 08:17 PM
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Sounds as if the vgt and or turbo needs cleaned.
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Old 07-30-2014, 08:32 PM
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Can you monitor VGT , MAP, EBP ? do have EGR or delete
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Old 07-30-2014, 09:35 PM
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Unplug ebp. Does it still happen? If so suspect bad vgt sensor. Swap in kowen good one to test.
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Old 07-31-2014, 02:09 AM
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Stiction only (mostly) happens when the engine is cold.
Once you have warmed up it goes away. It's more like
a miss or ruff idle.


Sean Click the image to open in full size.
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Old 08-01-2014, 07:12 AM
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Would there be something electronic causing this?

I tried it again on the highway last night, all gears pull perfectly besides 4th...

If I have to pull the turbo I will, but id prefer not to!

I will pull the EBP sensor today before I head home and see what happens
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Old 08-01-2014, 01:32 PM
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Go with with what Cheezit said.


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Old 08-01-2014, 07:18 PM
04badford 04badford is offline
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Quote:
Originally Posted by 2006powerstroke90 View Post
Would there be something electronic causing this?

I tried it again on the highway last night, all gears pull perfectly besides 4th...

If I have to pull the turbo I will, but id prefer not to!

I will pull the EBP sensor today before I head home and see what happens
don't pull it just unplug the connection
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External coolant filter.
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  #9  
Old 08-05-2014, 06:47 AM
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Took out the EBP sensor, thing was plugged solid, cleaned it and no more surging
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Old 08-05-2014, 08:36 AM
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Glad you got it fixed. And thanks for coming back and posting what resolved the issue. That cheezit seems to know what he is talking about.lol
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2006 F350 Harley Davidson, Atlas 40 from Ed 4" lift belstein shox
Arp studs, sinister coolant filter, bullet proof egr cooler, 4" turbo back exhaust straight pipe, ccv reroute, sct ts/ tunes gearhead, 10 vein turbo, updated dummy plugs/standpipes, stc fitting, blue spring 2005 King Ranch,2004 Excursion
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Old 08-05-2014, 08:36 AM
 
 
 
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