Weird noises at shutdown - Ford Powerstroke Diesel Forum
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Old 07-26-2013, 05:42 AM
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Weird noises at shutdown

I just finished putting my truck back together after the plug in the side of the hpop blew out. Since I had it apart, I also put in an EGR delete kit. It is a 2004 F250 6.0, but must be a mix of the early and late model. My ICP is on the passenger valve cover, but the hpop cover was the early style.

It seems to run fine now, but I get some odd sounds especially when shutting it off. It sounds like air rushing through the air filter box. I can hear the turbo spinning down, too. I did some searching and someone else made the analogy of a roller skate wheel, which sounds similar to what I am hearing right before the turbo comes to a stop. I also get a loud droning noise when idling and driving.

I have never noticed any of these noises before. Is it possible for the truck to run if the 45 degree CAC boot is cracked? Mine did have visible cracks, but I didn't inspect it closely enough to see if they went all the way through, just replaced it. I'm wondering if that is related to my airbox noise.

Because of the air box noise I am hearing, I'm thinking that is where the droning sound is coming from. Either that or the 4" downpipe is now resting on the frame rail somewhere after reconnecting it to the turbo.

Any ideas?
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Old 07-26-2013, 07:56 AM
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It is the EBP sensor, change it. It sounds like the brake engine of the trucks downhill
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Old 07-29-2013, 06:46 AM
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I think the EBP sensor is working correctly. I get readings of around 14 at idle and it goes up as I accelerate.

It seems to start hard lately too. It cranks for 5 or 6 seconds and then slowly sputters to a normal idle.

The drone actually seems to be a vibration and sometimes changes intensity and/or stops depending on which way I am turning. I'm not sure if that is related or just coincidence.
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