12 Valve Engine and Drivetrain Talk about the 12V engine and drivetrain here. This is for 1994-1998.5 engine and drivetrain discussion only.

No power over half throttle

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Old Sep 23, 2006 | 08:19 PM
  #16  
Birdman's Avatar
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From: York PA
I'll post my finding as soon as it's fix. leaning towards overflow valve. any suggustions on valves
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Old Sep 25, 2006 | 02:13 AM
  #17  
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From: Garrard county, Kentucky
Originally Posted by oldsmokey97
my truck does the same thing except i loose boost when i get to WOT.
If i punch it to the floor, the boost will go up to about 36 and then drop to 28 or so. Whats the deal. Does not matter if i have wastegate plugged or not (for i have banks big head wastegate actuator).
Only thing I can think of is that you have a fuel problem, or more likely your fuel plate is defueling up there. A #0 or #100 will fix that though

Eric
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Old Oct 16, 2006 | 03:09 PM
  #18  
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From: Portland, Or.
Ever figure this out??? I'm having a similar problem. Thought maybe it was the pacbrake, but after reading this, maybe its the wastegate...
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