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Turbo surging in 4th gear only

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Old 07-30-2014, 08:41 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, 09:17 PM
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Sounds as if the vgt and or turbo needs cleaned.
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Old 07-30-2014, 09:32 PM
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Can you monitor VGT , MAP, EBP ? do have EGR or delete
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Old 07-30-2014, 10:35 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, 03:09 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
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Old 08-01-2014, 08:12 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, 02:32 PM
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Go with with what Cheezit said.


Sean
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Old 08-01-2014, 08:18 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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Old 08-05-2014, 07:47 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, 09:36 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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