Strange Buzzing After MiniMaxx Install - Ford Powerstroke Diesel Forum
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Old 08-12-2014, 09:11 PM
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Strange Buzzing After MiniMaxx Install

So I just installed my MiniMaxx with a non-delete tune. Went out for a drive and did the transmission re-learn. Very happy with the H&S performance (even in the non-delete trim).

The odd thing though is after I get home and shut off the truck and get out, I hear a humming which sounds like it is in the engine compartment along with a periodic buzz. The Buzz is about 1 second every 10 or 11 seconds. It does it for about 2-3 minutes and then there is a noise like a valve moving and all goes silent. The truck didn't do this before the H&S. Can anybody tell me what it is and if it's normal?

Last edited by EskimoPie; 08-12-2014 at 09:14 PM.
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Old 08-12-2014, 09:22 PM
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Pretty sure that's normal, mine did it not deleted and deleted.

I cant remember what it is (I read it somewhere) but your good I think.
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Old 08-13-2014, 06:02 AM
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I'm pretty sure it's an actuator for the EGR. Anyone confirm?
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Old 08-13-2014, 09:07 AM
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Quote:
Originally Posted by Asleepz View Post
I'm pretty sure it's an actuator for the EGR. Anyone confirm?

That's what I've heard too. The sound is coming from near the turbo so it makes sense. I also heard if you press the brakes after the truck is shut off the sound will stop. I haven't tried that yet. I only hear it in my garage where it's quiet.


2013 F250 6.7 PSD
Crewcab FX4 6.5 ft bed
Factory 18" Michellins 3.55 gears
DPF and EGR delete 51" muffler
Punch it Performance tunes
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Old 08-13-2014, 09:11 AM
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Poke your head under the fuel tank when you shut it down and see if its coming from there maybe, DEF tank purges the lines after you shut the truck off so the little pump cycles
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Old 08-13-2014, 12:13 PM
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The valve noise is the EGR Valve. You can duplicate the noise if you operate the plunger by hand.
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Old 08-13-2014, 12:42 PM
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Cool, thanks for the info guys. Guess I should just get around to installing my No Limit EGR delete and be done with it.
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Old 08-13-2014, 01:37 PM
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Quote:
Originally Posted by mor4wd View Post
The valve noise is the EGR Valve. You can duplicate the noise if you operate the plunger by hand.

My EGR is blocked and unplugged and I still hear it. Sounds like the waste gate solenoid that others have mentioned to me.


2013 F250 6.7 PSD
Crewcab FX4 6.5 ft bed
Factory 18" Michellins 3.55 gears
DPF and EGR delete 51" muffler
Punch it Performance tunes
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Old 08-13-2014, 02:09 PM
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I could be wrong. Mine truck doesn't do it anymore and I only have the EGR disabled.
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Old 08-13-2014, 06:15 PM
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mine still does it with the egr deleted. truck has a damn mind of its own. its definitely nothing to do with the egr .
jayz likes this.
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