EBPV Malfunction???
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Joined: Aug 2012
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From: Oceanside, CA
EBPV Malfunction???
*Note: If you are eating or about to, I would come back later ....*
I have noticed a wheezing sound when the truck warms up that I would say sounds very similar to a dog gagging and getting ready to barf. It is louder than the exhaust at idle. I have also noticed that I can make it stop by tapping the brake pedal and then the idle will increase by 100-200 rpm and then drop back down. I have done a little reading and I believe this is somehow related to the EBPV although I don't fully understand. Any other thoughts or explanations???
I have noticed a wheezing sound when the truck warms up that I would say sounds very similar to a dog gagging and getting ready to barf. It is louder than the exhaust at idle. I have also noticed that I can make it stop by tapping the brake pedal and then the idle will increase by 100-200 rpm and then drop back down. I have done a little reading and I believe this is somehow related to the EBPV although I don't fully understand. Any other thoughts or explanations???
Hotshot
Joined: Jan 2011
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From: Puget Sound
Yes... with an explanation. The EBPV needs oil pressure from the LPOP to operate. If the idle is too low, the LPOP doesn't have enough drive pressure to over-ride the exhaust backpressure. The backpressure and the EBPV are having a slap fight like a couple of yellow minions from Despicable Me... trying to take control of the butterfly valve. Once the idle is up a little, the LPOP sends in reinforcements to the EBPV's side, and that closes the matter... until you step on the throttle or brake, or the truck warms up and the PCM (Gru) gives the command to shut off the EBPV.
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Senior User
Joined: Aug 2012
Posts: 126
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From: Oceanside, CA
*I live in a cul-de-sac and if my truck starting at 0530 isn't enough to wake them up/ **** them off I don't want to add a loud squeal to the mix. Neighbors are all cool so just trying to not be a D***
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
No, this just means the idle is low. The idle needs to come up before the EBPV is activated... but your truck is behaving like many others. You are not having an issue.
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robles4242
1999 - 2003 7.3L Power Stroke Diesel
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Oct 8, 2010 07:04 AM
