Different Intake noise - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 10-06-2011, 05:48 PM Thread Starter
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Different Intake noise

After pulling the boat the other day, my truck started making a weird sound between about 1100 and 1500 rpms. it was kinda like a deeper whistle noise. it has never done this before its not the turbo whistle and i have no clue where to start. I think it might have something to do with the intake boot it is the original orange boot and has a small tear but is covered by the clamp so that shouldnt be causing anything. side note my batteries have been weak, long cranking time before start, could this have anything to do with this. i have not lost any psi, at least by what my gauge is saying still getting the normal 10 psi. ANY ideas will help

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
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post #2 of 19 Old 10-06-2011, 05:53 PM Thread Starter
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also the noise stops, at least so far it has, after the engine is warmer probably after about 30 min of driving

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
Sky Jacker Suspension, Limo Tint, Cobra Classic 29 LTD,
Stage 2 TC, improved internals
Loudest, Proudest member of the Fightin' Texas Aggie Class of 2015!
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post #3 of 19 Old 10-06-2011, 05:57 PM
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is it your EBPV?


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2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
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post #4 of 19 Old 10-06-2011, 06:10 PM Thread Starter
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Quote:
Originally Posted by jesilvas View Post
is it your EBPV?
You're gonna have to excuse my ignorance, but what is a EBPV how could it effect me and what can i do to go about checking it?

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
Sky Jacker Suspension, Limo Tint, Cobra Classic 29 LTD,
Stage 2 TC, improved internals
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post #5 of 19 Old 10-06-2011, 08:15 PM
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Exhaust back pressure valve. go to the 7.3 sections. or search
I couldn't find any right away but i've seen them before.
It's a valve right after the turbo (butterfly valve) that closes to aid in warm up. There is a plug at the base of the turbo pedestal that controls it. you could unplug it and see if it stops


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post #6 of 19 Old 10-07-2011, 08:57 AM Thread Starter
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i read that the ebpv goes off engine oil pressure. lately my oil pressure has been flickering. it is not low on oil. could the ebpv be effecting oil pressure or could the oil pressure flickering be effecting the ebpv?

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
Sky Jacker Suspension, Limo Tint, Cobra Classic 29 LTD,
Stage 2 TC, improved internals
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post #7 of 19 Old 10-07-2011, 01:24 PM
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The EBPV is actuated by engine oil, but only when "commanded" by the PCM through the electrical solenoid on the pedestal. EBPV should not affect oil pressure and the oil pressure should not affect the EBPV. Is your oil pressure gauge the factory one? It is really only a glorified idiot light. The sender is only a switch (either off or on ... doesn't have a variable resistance with pressure). The gauge is supposed to read mid-scale when the pressure is above the setpoint (I think about 6 psi). Most problems with it fluctuating or not working are with the switch going bad or faulty wiring. Cheers!

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post #8 of 19 Old 10-07-2011, 04:46 PM Thread Starter
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Quote:
Originally Posted by Patrick Feeley View Post
The EBPV is actuated by engine oil, but only when "commanded" by the PCM through the electrical solenoid on the pedestal. EBPV should not affect oil pressure and the oil pressure should not affect the EBPV. Is your oil pressure gauge the factory one? It is really only a glorified idiot light. The sender is only a switch (either off or on ... doesn't have a variable resistance with pressure). The gauge is supposed to read mid-scale when the pressure is above the setpoint (I think about 6 psi). Most problems with it fluctuating or not working are with the switch going bad or faulty wiring. Cheers!
So the oil pressure flickering is not something i should worry about?
is there anyway i can check the operation of the ebpv? any way to check the PCM? to make sure everything is functioning correctly or is the best/easiest thing to do is remove the ebpv?

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
Sky Jacker Suspension, Limo Tint, Cobra Classic 29 LTD,
Stage 2 TC, improved internals
Loudest, Proudest member of the Fightin' Texas Aggie Class of 2015!
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post #9 of 19 Old 10-07-2011, 05:37 PM
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There's an actuating rod going from the pedestal base to the setup bolted to the exhaust housing and before the down pipe. If you hear the noise, you could unplug it and then see if it moves. Or take off the pipe and look in there and make sure it's not stuck closed. Look in the 7.3 mod section for EBPV delete


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post #10 of 19 Old 10-07-2011, 06:01 PM Thread Starter
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Quote:
Originally Posted by jesilvas View Post
There's an actuating rod going from the pedestal base to the setup bolted to the exhaust housing and before the down pipe. If you hear the noise, you could unplug it and then see if it moves. Or take off the pipe and look in there and make sure it's not stuck closed. Look in the 7.3 mod section for EBPV delete
The only thing that i have not read anywhere is how to make sure there is not an oil leak. I've read that it could be a problem but haven't seen how to make sure the oil leak doesnt happen?

-Brandon-
1996 F 350 7.3L CCLB
6637 Intake; Banks: Intercooler, Up Pipes, Turbo; PHP Phoenix
4" down-pipe, cat delete,muffler delete, 4" turbo back exhaust
Sky Jacker Suspension, Limo Tint, Cobra Classic 29 LTD,
Stage 2 TC, improved internals
Loudest, Proudest member of the Fightin' Texas Aggie Class of 2015!
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