Turbo problem? - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 12-10-2009, 04:37 AM Thread Starter
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Turbo problem?

Since its been cold my truck is doing something weird. I normally let it warm up 15mins. I hear the flapper inside shut and my truck sounds like a airplane. All that is normal.

When I come back outside its normally sitting around 900 RPMs and I hit the brake and it goes down and idle normal.
I start to drive and I normally take it pretty easy on it as its not completely warmed up.

I get to about 1700 - 2,000 RPMs and my truck starts making a swooshing sound. If I hit the gas a little harder it stops.
It even happens when when I have the cruise on going down the highway.

I noticed when I am cruising around 55 MPH with the cruise on my Boost is around 3-4 PSI. When this happens my Boost drops down to 0 or 1 PSI.

Sometimes I am accelerating and my boost is around 8 PSI and it drops to 0 or 1.

Once the truck is completely warmed up it will not do it. By completely warmed up I mean at normal operating temp. Not just in the dummy gauge normal area.

Is this a problem or normal? This is my first diesel in the cold.

Its been around 30 degrees and today it was 8!

2001 Ford Power Stroke
DIY Intake
5 Inch Straight Exhaust
TW Chip 6 POS
EGT and Boost Gauges
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post #2 of 6 Old 12-10-2009, 08:54 AM
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these trucks have a hi-idle for when it's excessively cold. When you tap the brake, put it into gear, or on 6spds release the park brake hi-idle ceases.

The woooshing at 55mph it just the ebpv opening to warm up the oil. Normal again.
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post #3 of 6 Old 12-10-2009, 10:06 AM Thread Starter
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Quote:
Originally Posted by 85_305 View Post
these trucks have a hi-idle for when it's excessively cold. When you tap the brake, put it into gear, or on 6spds release the park brake hi-idle ceases.

The woooshing at 55mph it just the ebpv opening to warm up the oil. Normal again.
Should my boost drop to zero?


I knew it was normal at idle but i could not find anything about it while moving

2001 Ford Power Stroke
DIY Intake
5 Inch Straight Exhaust
TW Chip 6 POS
EGT and Boost Gauges
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post #4 of 6 Old 12-10-2009, 12:13 PM
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Completely normal operation.

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
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post #5 of 6 Old 12-10-2009, 12:24 PM Thread Starter
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Thanks, I figured it was but wanted to be 100%

2001 Ford Power Stroke
DIY Intake
5 Inch Straight Exhaust
TW Chip 6 POS
EGT and Boost Gauges
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post #6 of 6 Old 12-10-2009, 02:14 PM
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Quote:
Originally Posted by joshk View Post
Thanks, I figured it was but wanted to be 100%
mine does exactly what you said all the time in cold temps very annoying.

2000 7.3 F250 FX4 ext cab short box

Cobalt Pillar Trip pod gauges, trans temp, boost, pyro
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