6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

not showing boost

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Old

Oct 2, 2017 | 01:35 PM

#1

mel105hunting

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not showing boost

I have a 2008 F450 6.4. I blew a turbo boot while pulling our big trailer. It got real hot fast and burnt down the motor. Three cylinders scored and two cracked heads. After, while checking things it would not show boost. I had the motor rebuilt and is back in and sound great but still doesn't show any boost. I replaced the map/iat1 sensor and the exhaust pressure sensor, still nothing. I drove it and it doesn't seem like it has any boost. The turbo's were rebuilt too. I have deleted the egr and the dps a long time ago.
What am I missing?

Thank you
Melvin R Dennis

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Old

Oct 3, 2017 | 07:16 AM

#2

speakerfritz

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Joined: Jul 2013

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do you have a cat and dpf

if you do, disconnect the exhaust down pipe before the cat and re-check it.

if you get boost , either your cat or dpf is clogged

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Old

Oct 3, 2017 | 11:03 AM

#3

Copper.Farm

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From: Bozeman MT

Something to consider, Boost is usually a calculated value based upon Manifold Absolute Pressure Sensor.

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Old

Oct 4, 2017 | 10:38 PM

#4

Copper.Farm

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From: Bozeman MT

Quote:

Originally Posted by Copper.Farm

Something to consider, Boost is usually a calculated value based upon Manifold Absolute Pressure Sensor.

Also, MAF and MAP are different sensors.

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