Hissing sound when it's cold out - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 10-23-2013, 07:21 AM Thread Starter
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Hissing sound when it's cold out

Hi everyone I'm new to the forum and diesel world. Happy to be part of both. I just bought a 99 f250 powerstroke this summer. I love the truck and I have noticed when it's cold out(low 40s and colder) that I hear a hissing noise when driving. Goes away if accelerating. Goes along with the rpms. I'm sure it's probably something simple but I'm asking to figure out for sure what it is and if I should be concerned. Well thanks in advance and again happy to be part of the forum!
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post #2 of 9 Old 10-23-2013, 07:40 AM
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wanna say, the ebpv assy is closed. It probably sounds like a jet engine, when idling, with rpms up higher then usual?

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #3 of 9 Old 10-23-2013, 08:03 AM Thread Starter
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Kind of like jet sound...kind of like something spraying. It has a slight delay when hissing sound is present. I haven't noticed a change in performance other than that. Where is the ebpv assembly?
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post #4 of 9 Old 10-23-2013, 08:24 AM
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Its the ebpv its connected to the exhaust side if your turbo. 99% of us just unconnect the plug that's under the turbo plugged into the turbo pedastal.

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post #5 of 9 Old 10-23-2013, 08:28 AM Thread Starter
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Alright I'll have a look at it shortly, let ya know how it does driving. Thanks!
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post #6 of 9 Old 10-24-2013, 04:31 AM Thread Starter
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Yep that's what it was, I unplugged it and all is good. I'm sure I'll be asking more questions in the future since I'm new to this stuff. Thānks again!
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post #7 of 9 Old 10-24-2013, 08:05 AM
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Were happy to help.

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Colin S. Age:22 Certified Diesel Tech, Infantry US ARMY
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post #8 of 9 Old 10-24-2013, 08:10 AM
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Quote:
Originally Posted by Colin7.3 View Post
Its the ebpv its connected to the exhaust side if your turbo. 99% of us just unconnect the plug that's under the turbo plugged into the turbo pedastal.

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OK, I'm in the 1%... Wouldn't that slow down how long it takes to warm up? My truck runs fine warm, but is cold natured as hell. Can't just jump in and go.

99 F-250 Super Duty, 4X4, CCSB. AKA: The Liberty Wagon.


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post #9 of 9 Old 10-24-2013, 09:07 AM
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Quote:
Originally Posted by daddyusmaximus View Post
OK, I'm in the 1%... Wouldn't that slow down how long it takes to warm up? My truck runs fine warm, but is cold natured as hell. Can't just jump in and go.
yup, but most of us, dont live in the Arctic.....

OP....clean out the ebp sensor and tube..(located in front of motor, and connects to p/s manifold)

99.5 x-cab 7.3l, 6spd, 161k miles.....
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