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Old 05-26-2009, 08:15 PM
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Pump Noise

About 3 or 4 weeks ago I purchased an 05 6.0 F250. I noticed when the engine is turned off a noise that sounds like a pump running, runs for about 15 seconds or so. I knew my 01 7.3 didn't do that, but I thought it was something added to the 6.0. Yesterday I was talking to a gentlmen that has an 06 6.0 and he said his truck does not do this. Is this something to be concerned about or just normal on the 05 models?

Thanks,
Jim
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Old 05-26-2009, 09:40 PM
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noise

i'am new to the diesel world but i just got a 05 myself.after i shut the motor off it sounds like the turbo slowing down to a stop.i dont know if thats what it is are not.thought i would throw it out there.
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Old 05-27-2009, 12:14 AM
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its just the turbo slowing down, its prefectly normal, im not sure why you can hear this on the 6.0 so much more than the 7.3 but it does, more than likely its the diffenent intake system and turbo but other than that i dont know, but lots of diesels do this the RPMS on a turbo is tremendously fast and takes a few seconds for it to slow to a stop after the engine is shut off. hope this helps.
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Old 05-27-2009, 03:12 AM
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my 7.3 turbo is pretty noticable when i shut down, but sure doesnt last 15 seconds. have some one put their ear near the tail pipe when you turn it off, that way youll know for sure.
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Old 05-27-2009, 03:32 AM
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It's not the turbo spinning down. It's actual something running like a vacuum pump or fuel pump. When turn off the key it runs (same speed/freq.) until a set time expires then turns off just like you flip a switch. The noise is coming from under the hood. I'll open the hood when I get to work this morning to pin point where it's actually coming from.
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Old 05-27-2009, 03:38 AM
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Quote:
Originally Posted by hazard View Post
its just the turbo slowing down, its prefectly normal, im not sure why you can hear this on the 6.0 so much more than the 7.3 but it does, more than likely its the diffenent intake system and turbo but other than that i dont know, but lots of diesels do this the RPMS on a turbo is tremendously fast and takes a few seconds for it to slow to a stop after the engine is shut off. hope this helps.
Turbo slowing down takes about 10 seconds. Not 15 minutes...
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Old 05-27-2009, 05:34 AM
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May have an older flash on your PCM where it buzzes the injectors for a short period of time after you shut the key off. I believe that program was the one that came out right before the inductive heat flash.
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Old 05-27-2009, 10:09 AM
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Quote:
Originally Posted by 06F250FX4 View Post
May have an older flash on your PCM where it buzzes the injectors for a short period of time after you shut the key off. I believe that program was the one that came out right before the inductive heat flash.
This morning I checked it when I got to work and it is the injectors. It still has 5,000 miles left on the factory warranty, should I take it to the dealer to flash the pcm?


Thanks for the help,
Jim
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Old 05-27-2009, 11:58 AM
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Quote:
Originally Posted by BIGBILL105 45 View Post
Turbo slowing down takes about 10 seconds. Not 15 minutes...
he said 15 seconds or so... im not sure where your getting 15 minutes?
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Old 05-27-2009, 12:01 PM
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i think your fine. no big deal
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