Turbo problems
Thread Starter
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Mountain Pass
Joined: Jun 2007
Posts: 197
Likes: 0
From: Kansas
Turbo problems
I have just started having problems with what seems to be my wastegate opening and closing when my motor has not quite warmed up. When just starting out in the morning and only when its not pulling hard. I think it's the wastegate because when it happens my boost gauge drops to zero, I hear a hissing sound, all most like the bypass valve opening, then when the sound goes away my boost comes back up. Could it be the bypass or wastegate? My mpg has also dropped off. It doesn't seem to be a problem once its up to temp. It's a 02 with @ 185K
Elder User
Joined: May 2007
Posts: 691
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From: Florida
isnt that the ebpv (exhaust back pressure valve) opening and closing ... i thought its suppose to do that in colder conditions to get the vechile up to running tempertaures. If it is that then im sure u can disconnect that if u would like.
Elder User
Joined: May 2007
Posts: 691
Likes: 0
From: Florida
Well to be honest ive never had that problem since i live in Florida, but ive read in numerous pages that it can last a good while until the pcm tells it the vechile is up to proper temps. Alot of members say there trucks sound like a jet when it is activated might be something u might want to check out.
Thread Starter
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Mountain Pass
Joined: Jun 2007
Posts: 197
Likes: 0
From: Kansas
Yes, mine does that too until you step on the brake, then it kicks out. I've never had it kick on while I'm driving, and I've been in colder places then central Texas. Could it be a sensor problem?
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
It (EBV) can come on under certain low load driving conditions and when there is a malfunction in the system. Do not rule it out. I am leaning in this direction as the WG could pretty much care less about temps if it is malfunctioning.
Thread Starter
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Mountain Pass
Joined: Jun 2007
Posts: 197
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From: Kansas
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Elder User
Joined: Aug 2007
Posts: 629
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From: South-Central Kentucky
Absolutely. It closes off a valve in the exhaust and creates more backpressure thus defeating your boost.
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Elder User
Joined: Aug 2007
Posts: 629
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From: South-Central Kentucky
Chase, I don't think you can unplug it without throwing a code. I do know that some of the sponsors have a fooler plug that plugs into the harnes and makes the computer think that it is still hooked up. About $35 IIRC. Maybe somebody else knows how to fix a lot cheaper, I don't, but then I don't know much.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by superduty4x4
Related question- can you unplug the stupid thing without throwing a code?
Just make sure you know what you are doing as the EBV solenoid diverts oil to the turbo bearings when in operation.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
you can unplug the EBPV by un pluging it just under the turbo..above the blue dot in this pic below..there is a wire locking clip on the plug..flip it back and pull on the plug..you will not get a SES light...but you will get a code stored in the PCM...there is a eliminator for this plug if you want it...
http://www.puredieselpower.com/catalog/9903-73l-powerstroke-exhaust-backpressure-valve-terminator-p-106.html
my EBPV is a exhaust brake only...i never use it for warm ups any more...
Mike..the EBPS is used for fueling with the PCM..the EBPV is the end of a loop..i took this from Guzzle's page..i have Jody's tunes..so i make sure my tube is clean....
<TABLE cellPadding=5 width="80%" align=center><TBODY><TR><TD colSpan=3>The exhaust backpressure sensor and tube on the 7.3L Powerstroke engine is prone to clogging up with soot and can affect performance and mileage. If your PowerStroke seems to be loosing mileage economy, this may be an item you should put on your list of "things to do".
</TD></TR><TR><TD colSpan=3>According to Jody Tipton, DP Tuner: "a properly installed sensor in good working order is necessary for optimum PCM control of fueling."
</TD></TR></TBODY></TABLE>
http://www.puredieselpower.com/catalog/9903-73l-powerstroke-exhaust-backpressure-valve-terminator-p-106.html
my EBPV is a exhaust brake only...i never use it for warm ups any more...
Mike..the EBPS is used for fueling with the PCM..the EBPV is the end of a loop..i took this from Guzzle's page..i have Jody's tunes..so i make sure my tube is clean....
<TABLE cellPadding=5 width="80%" align=center><TBODY><TR><TD colSpan=3>The exhaust backpressure sensor and tube on the 7.3L Powerstroke engine is prone to clogging up with soot and can affect performance and mileage. If your PowerStroke seems to be loosing mileage economy, this may be an item you should put on your list of "things to do".
</TD></TR><TR><TD colSpan=3>According to Jody Tipton, DP Tuner: "a properly installed sensor in good working order is necessary for optimum PCM control of fueling."
</TD></TR></TBODY></TABLE>
Posting Guru
Joined: Mar 2008
Posts: 1,734
Likes: 1
From: Monroe VA
Yeah I was thinking about turning mine into an exhaust brake also! Sounds like a heck of an idea to me. I recall reading a thread on a DIY exhaust brake and you use a toggle switch and it would work when you hit the brakes or you could have it on all the time for warm ups or in the third position it would work normally.
Thread Starter
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Mountain Pass
Joined: Jun 2007
Posts: 197
Likes: 0
From: Kansas
Thanks for all the info guys, just got off work. I guess my only question at this point, is it normal operation for this valve to operate when the vehicle is in motion? I've never heard it do this til now and I've been in a lot colder climate.