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Discussion Starter #1
I am having the following issues, P0302, P0316 code. I have read some of the other post and I have tried just about everything. Loss of power, misfiring. I have changed the following items:
Spark plugs, Plug wires, Coil pack, cam shaft sensor, crank shaft sensor, fuel injectors, fuel pressure sensor, PCV.

Checked the following items: compression test: good pressure, checked for voltage ripple, nothing.

Any advice? Please help.
 

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Have you tried Googling both of those codes? Sounds like you've done your research, but you'd be surprised occasionally what turns up in Google.
 

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Discussion Starter #3
Yeah, mainly forums like this. I am now trying to remove the O2 sensor but it buried deep. can't get any of my tools on it.
 

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Check your intake manifold runner control and make sure the linkages haven't came off. It's on the back side of the lower intake.
 

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Discussion Starter #5
Well, I lost all hope and took it to a friend who owns pro shop. the head tech took 2 days of testing and finally found the issue. the brand new spark plug installed had an internal crack that was displacing the power. had to put power to spark plug and check its resistance.
 
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