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Old 06-12-2009, 08:50 PM
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EBPV malfunction?

I need some help guys. I was driving into town tonight and my truck suddenly started missing violently and losing power. It barely had enough power to pull itself. The check engine light immediately came on and the pyrometer temps were climbing fast. No sooner than it did it, then the light would go out and everything would be fine. Usually I would have to put it in neutral for it to quit then drive about a mile and it would do it again. It done this a dozen times while I limped home to check the codes. It showed EBPV malfunction. I completely removed the EBP valve 2 years ago and have never had a problem. I've had the DP tuner in it for about 2 weeks and no problems at all. It acts like something is blocking the exhaust bad, but can go back to normal just as quick. Any ideas? I doubt the tuner is involved, but I'll pull the chip tomorrow and see what it does. Thanks.
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Old 06-12-2009, 08:56 PM
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Well that's weird. Your turbo has no EBPV then...? And that's what the code is...? What an anomaly. That should be an episode of LOST.
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Old 06-12-2009, 08:59 PM
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Exactly. I removed it when I put the D66 on it. I can't figure it out. It's like the downpipe is completely blocked and then all clear again just as quick. Keeps doing it over and over.
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Old 06-12-2009, 09:05 PM
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Yeah that's freakin weird...

I'm tryin to remember though, and it seems like you can still throw that code without a EBPV installed. Like the sensor still picks up the exhaust pressure, and can throw that light.

Minus that code, a guy on here had a similiar problem. Loosing power, gettin all the power back, loosing it again, etc, and I think it was the IPC in the end. Let me see if I can find the thread.
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Old 06-12-2009, 09:05 PM
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wastegate?
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Old 06-12-2009, 09:13 PM
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Quote:
Originally Posted by chvyrkr81 View Post
Yeah that's freakin weird...

I'm tryin to remember though, and it seems like you can still throw that code without a EBPV installed. Like the sensor still picks up the exhaust pressure, and can throw that light.

Minus that code, a guy on here had a similiar problem. Loosing power, gettin all the power back, loosing it again, etc, and I think it was the IPC in the end. Let me see if I can find the thread.
This code says EBPV malfunction. Isn't there another EBP code that is usually shown? IWhen I clear the code, it comes back, runs like crap, and check engine light all happens together. I ease off the throttle and shift to neutral , and all is fine for about a mile. Then starts all over again.

No wastegate on mine turbo73.
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Old 06-12-2009, 09:16 PM
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Dang... It's a poltergeist.


Does the EBP Sensor and tube deal matter on the OBS's? On a Supercruty that tube gets clogged with soot and on a SnapOn scanner where you can read the backpressure readings it is sky-high like 55psi, when in it should be 14psi... and it's in kiloPascals... that conversion was fun.
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Old 06-12-2009, 09:17 PM
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Quote:
Originally Posted by TW451 View Post
This code says EBPV malfunction. Isn't there another EBP code that is usually shown? IWhen I clear the code, it comes back, runs like crap, and check engine light all happens together. I ease off the throttle and shift to neutral , and all is fine for about a mile. Then starts all over again.

No wastegate on mine turbo73.
Yeah you could be right there. I was thinkin you could still get a EBP code with no EBPV so maybe you're right, and it's a different code altogether.

I dunno about codes though. I got a TPS fail code that ended up bein a short so??? Codes don't always lead us to the bad part.
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Old 06-12-2009, 09:20 PM
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Quote:
Originally Posted by TurboSevenThree View Post
Dang... It's a poltergeist.


Does the EBP Sensor and tube deal matter on the OBS's? On a Supercruty that tube gets clogged with soot and on a SnapOn scanner where you can read the backpressure readings it is sky-high like 55psi, when in it should be 14psi... and it's in kiloPascals... that conversion was fun.
I thought about that, but I don't see how it would cause it to go back and forth so quickly. I've never cleaned the tube, so I will check it tomorrow too.
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Old 06-12-2009, 09:23 PM
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Quote:
Originally Posted by chvyrkr81 View Post
Yeah you could be right there. I was thinkin you could still get a EBP code with no EBPV so maybe you're right, and it's a different code altogether.

I dunno about codes though. I got a TPS fail code that ended up bein a short so??? Codes don't always lead us to the bad part.
It has to be a blockage somewhere. I really doubt the DP tunes could be causing it. The pyrometer temps climb fast too, so there has to be something shutting down the exhaust flow and blaming the non-existing EBPV,
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