Whinning Noise - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 02-17-2007, 02:22 PM Thread Starter
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Whinning Noise

97 F350 7.3
Lately i've noticed that i'm getting a whinning noise from under the front passenger side of truck at about 1500 rpm along with this i notice rpm drop once i give it a little throtle it goes away, then reappears. some things to consider.... outside temp is around 10-20 degrees, engine temp cold, as the truck gets warmed up it does not happen, at first i thought it was a bad bearing in one of the pullies that's what kind a sound it makes. put i checked them all and it's ok. any suggestions???????????????
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post #2 of 14 Old 02-17-2007, 04:40 PM
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May be the EBPV that aids in warm-up. Try unplugging the 2 wire connector under the intake on the turbo to see if it stops.

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post #3 of 14 Old 02-17-2007, 06:27 PM Thread Starter
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thanks i was hoping it was going to be simple job. any draw backs in leaving it unplugged
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post #4 of 14 Old 02-18-2007, 08:17 AM
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Originally Posted by VINLAUR View Post
thanks i was hoping it was going to be simple job. any draw backs in leaving it unplugged
May take a little longer to warm the cab up but other than that, no. All the EBPV does is restrict the exhaust flow when it's cold. That makes the engine work harder to get the exhaust past the closed valve, thus creating heat faster. If the coolant gets warm faster then the heater will blow out warm air faster. As the engine warms up, the PCM uses engine oil temp. readings (and probably other reading as well, but I believe EOT is the main one) to monitor engine temps and gradually opens the EBPV. Hope this helps.
P.S. Any techs. on here, chime in and correct me if any of this is wrong. Don't want to mislead anybody

2000 F-350, 4x4, regular cab
Automatic tranmission
Mods: Mac cold air induction
MBRP 4in. turbo-back exhaust
Diablosport Predator programmer
3in. leveling kit
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post #5 of 14 Old 02-18-2007, 09:46 AM
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You sure its not your wife lol.I have nothing else to add.Hope you get it fixed.I just know every time my wife rides with me I have a whining noise coming from the pass side!
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post #6 of 14 Old 02-18-2007, 02:01 PM
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I have the same thing going on. It sort of sounds like a power steering pump or a pto sound, and I isolated it to the oil cooler pipe(the 1 1/2 inch pipe that runs under the driver side exhaust manifold). It drives me crazy. It is there during warm up and goes away. I took it to the dealer and they said it is a normal noise, but I'm not so sure. When yours is making that noise, pop the hood, use a long screwdriver or bar and put it to your ear from that pipe and see if it is coming from there also. Let me know if what you find out, because I have been searching the post for a while looking for someone else who hears this. thanks, Jim
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post #7 of 14 Old 02-18-2007, 02:19 PM Thread Starter
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Yes I Unplugged The Ebpv And It Seemed To Do The Job, Quick Fix Thanks Guys......
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post #8 of 14 Old 02-18-2007, 02:23 PM
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Drive it a while to make sure that was it. If you feel you need the warm up aid, you can plug it back up and know the noise is not a problem.

Derrick

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'97 F-350 "FORDOR" 4X4 (Dually Conversion, Shackle Reversal, Technicooler , Auto Meter Gauges, 4" DIY Dual Exhaust w/ '08 tips, 4" DIY intake w/ AEM filter, Wicked Wheel 2, 360 thrust bearing, Homemade E-fuel conversion, Wildman Chip, 160cc DIY injectors , DIY IDM mod) 230K and counting...
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post #9 of 14 Old 02-18-2007, 06:28 PM
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I looked for the two wire plug,and found two. I wasn't sure which one it was. Can you tell me specifically where it is located, and the color of the wires so I can try the same thing. thanks , Jim
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post #10 of 14 Old 02-19-2007, 02:30 PM
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Quote:
Originally Posted by VINLAUR View Post
Yes I Unplugged The Ebpv And It Seemed To Do The Job, Quick Fix Thanks Guys......
Congtats on getting her fixed Hope that was the problem.

2000 F-350, 4x4, regular cab
Automatic tranmission
Mods: Mac cold air induction
MBRP 4in. turbo-back exhaust
Diablosport Predator programmer
3in. leveling kit
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