2005 diesel 6.0 Truck Whistles towing uphill - Ford Powerstroke Diesel Forum
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post #1 of 75 Old 07-09-2018, 08:57 PM Thread Starter
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2005 diesel 6.0 Truck Whistles towing uphill

While towing 11k up a grade, my F250 2005 diesel 6.0 Truck Whistles. The whistle seems like its coming from behind the Tachometer. Happens on steep grades, close to 5%, with IPR above 74%, Turbo PSI 22+, but usually 28 PSI. ECT is 215 - 220 and then the fan kicks on and won't go up anymore and cools quick. EOT is between 234 and 238 when this happens.

Did a leak check by putting a shop vac blowing into the exhaust pipe and found these leaking and repairs did not help:

-Replaced Exhaust gas manifold and added missing gaskets
-Sealed Leaking Turbo Down pipe
-Sealed leaking exhaust gas manifold to Turbo up pipe. Bolts were not tight.

Whistle is apparent after 5 seconds on the video.


If this link doesn't work, try searching YouTube for "6.0 F250 2005 Truck Whistle" I can't get this video to play from the forum, but it works for me.

When I get this noise, it does not effect power, but I ease off the acceleration, slow down and it goes away. This can limit me to 40 MPH up steeper, extended grades.

No sign of leaking from the degas bottle. I've had heads done twice, second time by a reputable shop.


When I replaced the passenger side exhaust gas manifold, the up pipe on the bottom passenger side where it connects to the manifold had some play to it, lijke a 1/4:" or 1/2". I could wiggle it back and forth. Don't know if this is normal or not, but if I were to point at where the noise seems like its coming from, it would be 2' above this. I can't find any black marks indicating an exhaust leak.


Looking for recommendations on how to proceed next.
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2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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Last edited by ChrisSki; 07-09-2018 at 09:03 PM.
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post #2 of 75 Old 07-10-2018, 03:06 AM
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Gauranteed you need new up pipes. Pretty good sound on that video
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post #3 of 75 Old 07-10-2018, 06:24 AM Thread Starter
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I appreciate it. The video was taken with an iPhone 6s.
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2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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post #4 of 75 Old 07-10-2018, 11:27 AM
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Oh wow, whatever that is itís annoying.


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post #5 of 75 Old 07-10-2018, 03:25 PM
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Probably leaking in the flex portion of the up pipes. Thats where i would start

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post #6 of 75 Old 07-10-2018, 05:24 PM Thread Starter
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For those who have taken a Y pipe out of the square EGR models, can you confirm the general gist of the repair is:

-you remove the air filter, turbo, FICM, and Degas bottle.
-remove the bolts above the EGR and where the bolts where the Y pipe enters passenger manifold.
-From there it should be able to be pulled out.


May try this myself. Nothing but time. I do hate to pull that turbo. Seems like I can leave the down pipe in place.


The videos I watched were not really step by step.

2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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post #7 of 75 Old 07-12-2018, 04:14 PM Thread Starter
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Just a bump to not make sure I'm missing anything on pulling the Y Pipe at home:

-you remove the air filter, turbo, FICM, and Degas bottle.
-remove the bolts above the EGR and where the bolts where the Y pipe enters passenger manifold.
-From there it should be able to be pulled out the hood.

I have an '05 and don't want to find myself stuck, unable to pull it out the hood. Some videos said shops wanted to charge for cab off labor.

2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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post #8 of 75 Old 07-12-2018, 07:24 PM
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Yes. You will need to also unbolt the up-pipe to y-pipe connection to get it out, but it will come out from the hood if the turbo is out of the way. I'm not sure you even need to remove the FICM, but it's been a while since I did mine. If you are planning to replace both the y-pipe and up-pipe you will need to disconnect the connection to the EGR cooler and the passenger side manifold connection to get the up-pipe out.

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post #9 of 75 Old 07-17-2018, 12:27 PM Thread Starter
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I've got the turbo out. Fairly uneventful, but I still hate pulling the turbo. I left the FICM in. May be enough room to pull the Y Pipe out without that. Tomorrow, I'll remove the Y Pipe. Looks like I may have to remove the heat shield. Y pipe comes in the day after tomorrow.

2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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post #10 of 75 Old 07-18-2018, 02:28 PM Thread Starter
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After the turbo as out, it's just four more bolts to get the Y Pipe out. Very difficult bolts to get to though. Both the driver's side 10mm Bolts on the Y Pipe are starting to strip, so it's off to the Ford Dealer to get replacements. The local parts store has M8 X 1.25, but I'm not sure these bolts are treated for exhaust, have no specs on them, and look like wood bolts. The new Ford Parts Website no longer let's me search for a part and once I get the correct diagram, choose the other part and order. The bolts I need are labeled HB 1. I purchased a 20" ratchet extension to get at one of the bolts from underneath the truck. I also had a set of half moon wrenches including size 13mm and 10 mm that made getting at the bolts easier.

Wish I had a topside creeper.

The Y-Pipe came out. No apparent signs of leaking. The bellows do flex. but none show any signs of exhaust leakage, so I hope this is it.

2005 F250, 189,000 Miles
Bullet Proof HD Oil Cooler w/ Cold Weather Kit, Bullet Proof EGR, Bulletproof Water Pump, 7.3 Fan Clutch
Airlift 5k Airbags and Wireless Air
Edge CTS w/ EGT probe and Fuel Pressure Sensor.
15 MPG slick; 10 MPG towing 11k fifth wheel
Ravelco

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