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Old 12-30-2012, 02:58 PM
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turbo problm?

Code po299 turbo underboost condition.tried stock tune didn't help.truck has no power ..are the turbo vaines stuck open?how do I diagnose?what could it be? Any help greatly apreciated
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Old 12-30-2012, 03:12 PM
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Check map sensor hose and nipple for clogging, map hose torn/split, cac hoses torn/loose, exhaust leaks.

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Old 12-30-2012, 07:15 PM
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Thanks ill check those in the am and let u know how I make out.another question I had was.I'm not.getting better mpg with a sct street tune do u think a custom tune will get better mpg
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Old 12-30-2012, 07:21 PM
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I know nothing about tunes, i'm not studded, I don't run them.

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Old 12-30-2012, 07:27 PM
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Ya as tempting as it is I've never run the race tune to play it safe I just run a moderate street tune.had a banks and got another 3 mpg now I got sct and not getting any mpg
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Old 01-02-2013, 09:18 AM
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It was map sensor..I cleaned it than ran great .it had oil on it.only on cold starts truck smokes blue.what r the ways oil can b getting in my turbo?
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Old 01-02-2013, 09:35 AM
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Quote:
Originally Posted by sparky223 View Post
It was map sensor..I cleaned it than ran great .it had oil on it.only on cold starts truck smokes blue.what r the ways oil can b getting in my turbo?
Thanks for the update. The ccv allows a small amount of oil in the cac and intake over time, sometimes it's not a bad idea to pull the cac and drain it out. Other than that, the turbo seals can go bad. Others have found that switching to a good synthetic oil helps. Alot of us run rotella t6 with good results. A small bit of blue smoke is otherwise not uncommon.

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Old 01-02-2013, 11:44 AM
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Thanks again ...I run ford powerstroke oil with Lucas synthetic oil stabilizer,and in fuel I always run treatment Lucas upper cylinder file additive in winter howes
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