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Old 05-15-2018, 09:37 PM   #1
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Year: 1996
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Engine: T444E 7.3L
T444E EBP clogged

I think I found the reason my bus accelerates so slow. I ran the scanner on the bus and the EBP (Exhaust Back Pressure) code came back. I am familiar with these engines and the EBP system. I removed the sensor and found the tube to be plugged along with the sensor. I was unable to unclog the tube and debating on replacing it and the sensor.

I have replaced several EBP tubes and sensors in my day, but I wanted to ask if anyone has actually did away with the EBP system on the T444E. I know some of these engines were never equipped with this system to begin with.

I don't mind spending the money and replacing the parts, but I was wondering if you can simply unplug the sensor, unhook the rod from the wastegate and leave it like that, or can I replace the turbo pedestal with a non EBP pedestal and eliminate the wastegate and EBP system all together.

Thoughts on this?
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Old 05-15-2018, 10:04 PM   #2
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I removed the EBPV on my 7.3L powerstroke when I rebuilt the turbocharger. I sealed off the hole where the actuator exits the turbo pedestal and removed the valve from the turbo hot side. Mine was leaking oil at the actuator shaft. I drilled out the actuator hole and tapped it for a pipe plug and used a 10mm freeze plug to seal the valve shaft. Add a couple of o-rings for the turbo pedestal and Bob's your uncle. I think I did the job for $12 or so.

If your back pressure valve was stuck partially closed it would certainly choke off your engine.

I don't run mine below 40 degrees and have never missed it.
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Old 05-16-2018, 07:31 AM   #3
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Quote:
Originally Posted by roach711 View Post
I removed the EBPV on my 7.3L powerstroke when I rebuilt the turbocharger. I sealed off the hole where the actuator exits the turbo pedestal and removed the valve from the turbo hot side. Mine was leaking oil at the actuator shaft. I drilled out the actuator hole and tapped it for a pipe plug and used a 10mm freeze plug to seal the valve shaft. Add a couple of o-rings for the turbo pedestal and Bob's your uncle. I think I did the job for $12 or so.

If your back pressure valve was stuck partially closed it would certainly choke off your engine.

I don't run mine below 40 degrees and have never missed it.
That's good to know. Never removed or bypassed an EBP system myself.
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Old 05-16-2018, 07:52 AM   #4
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Engine: DTA360 / MT643
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Quote:
Originally Posted by Johnny Mullet View Post
I think I found the reason my bus accelerates so slow. I ran the scanner on the bus and the EBP (Exhaust Back Pressure) code came back. I am familiar with these engines and the EBP system. I removed the sensor and found the tube to be plugged along with the sensor. I was unable to unclog the tube and debating on replacing it and the sensor.

I have replaced several EBP tubes and sensors in my day, but I wanted to ask if anyone has actually did away with the EBP system on the T444E. I know some of these engines were never equipped with this system to begin with.

I don't mind spending the money and replacing the parts, but I was wondering if you can simply unplug the sensor, unhook the rod from the wastegate and leave it like that, or can I replace the turbo pedestal with a non EBP pedestal and eliminate the wastegate and EBP system all together.

Thoughts on this?
my 444E came from texas and never had an EBPV on it and I drove it 2 ohio winters now without issues.. it started up in minus 10 degree weather on its own and warmed up pretty good when i got driving down the road.. I dont see any ill effects from not having it.. if it were mine I'd buy the delete pedestal and turn it off in the computer so you dont set the code. (if your scanner cant disable it, mine can).

-Christopher
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Old 05-16-2018, 09:33 AM   #5
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Chassis: B3800 Short bus
Engine: T444E
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I, too, deleted my EBP system. I removed the butterfly valve and actuator innards, tapped and plugged the hole. Then I removed the EBP tube from the passenger side exhaust manifold and plugged that hole (the tube had rusted through anyway). Can't remember where I bought it, but there is a special plug to trick the computer into thinking the back pressure is always within spec. It's essentially just a pretty packaged connector that plugs into the end of the wire that connects to the EBP sensor. I think it's just a resistor in there. $15 if I remember correctly. Anyway, no problems since. The exhaust back pressure valve is only really useful when you're trying to warm the bus while idling. I never have my bus just sitting there idling cold.
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