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Just Returned From Diagnostics
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From: pawhuska,okla.
Just Returned From Diagnostics
OK, some of you are aware of my low boost high egt deleama. Well,you were all right. Stealer said need new pedestal,waste gate,and ebp actuator arm broke. If my wastegate responds with shop air then how is it stuck closed? My ebpv is hooked up and won't move back and forth without rigging up a coat hanger and physically moving it. Now, the pedestal is suppossedly leaking oil which in turn is causing low boost. Questions- 1. Can the turbo pedestal cause this. 2. How do I know which way the ebpv should be to be opened. 3. If my wastegate is stuck closed,how do i know that it is opened and the actuator rod seems to move back and forth with shop air applied. They want $1100. for all this plus labor. Do I need all this stuff or can I wire everything open and go about my way without any ill effects?
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From: Parker, CO
1. When the EBPV is hooked up, it is not supposed to physically move by hand. However they do tend to leak. An oil leak out the pedistal does not cause a loss of boost.
2. The bottom of the butterfly valve on the EBPV can be seen with the actuator arm protruding from the pedistal (under the turbine side of the turbo). The arm pushes the valve towards the passenger's side firewall when activated. When the valve is open (normal warm running position), the linkage at the bottom should point towards the driver's side firewall.
3. Wastegate stuck closed won't cause low boost. It's a weak wastegate that opens pre-maturely is what will cause low boost. If shop air moves the wastegate arm, then it's not stuck.
You can pick up a new turbo pedistal from Dieselsite for $285. Comes with all new o-rings and such. This will replace the broken actuator arm as well (assuming that the dealer diagnosed it correctly). What's involved is removing the turbo, which is easier than it sounds. A new stock replacment wastegate can be found for under $100, or you can go with an upgrade starting at about $139.
2. The bottom of the butterfly valve on the EBPV can be seen with the actuator arm protruding from the pedistal (under the turbine side of the turbo). The arm pushes the valve towards the passenger's side firewall when activated. When the valve is open (normal warm running position), the linkage at the bottom should point towards the driver's side firewall.
3. Wastegate stuck closed won't cause low boost. It's a weak wastegate that opens pre-maturely is what will cause low boost. If shop air moves the wastegate arm, then it's not stuck.
You can pick up a new turbo pedistal from Dieselsite for $285. Comes with all new o-rings and such. This will replace the broken actuator arm as well (assuming that the dealer diagnosed it correctly). What's involved is removing the turbo, which is easier than it sounds. A new stock replacment wastegate can be found for under $100, or you can go with an upgrade starting at about $139.
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From: pawhuska,okla.
Originally Posted by amiller93
How much air are you using I belive the WG is set at 5psi from the factory and Kwikk adjusted his to 10psi to keep it closed a little longer.
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From: pawhuska,okla.
Originally Posted by Pocket
1. When the EBPV is hooked up, it is not supposed to physically move by hand. However they do tend to leak. An oil leak out the pedistal does not cause a loss of boost.
2. The bottom of the butterfly valve on the EBPV can be seen with the actuator arm protruding from the pedistal (under the turbine side of the turbo). The arm pushes the valve towards the passenger's side firewall when activated. When the valve is open (normal warm running position), the linkage at the bottom should point towards the driver's side firewall.
3. Wastegate stuck closed won't cause low boost. It's a weak wastegate that opens pre-maturely is what will cause low boost. If shop air moves the wastegate arm, then it's not stuck.
You can pick up a new turbo pedistal from Dieselsite for $285. Comes with all new o-rings and such. This will replace the broken actuator arm as well (assuming that the dealer diagnosed it correctly). What's involved is removing the turbo, which is easier than it sounds. A new stock replacment wastegate can be found for under $100, or you can go with an upgrade starting at about $139.
2. The bottom of the butterfly valve on the EBPV can be seen with the actuator arm protruding from the pedistal (under the turbine side of the turbo). The arm pushes the valve towards the passenger's side firewall when activated. When the valve is open (normal warm running position), the linkage at the bottom should point towards the driver's side firewall.
3. Wastegate stuck closed won't cause low boost. It's a weak wastegate that opens pre-maturely is what will cause low boost. If shop air moves the wastegate arm, then it's not stuck.
You can pick up a new turbo pedistal from Dieselsite for $285. Comes with all new o-rings and such. This will replace the broken actuator arm as well (assuming that the dealer diagnosed it correctly). What's involved is removing the turbo, which is easier than it sounds. A new stock replacment wastegate can be found for under $100, or you can go with an upgrade starting at about $139.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
Originally Posted by marvinlong
My back won't allow me to remove the turbo again or I would.
I cannot pretend to understand your position, being short of stature has it's advantages. (No back problems.) But would it help if you constructed a platform that you could lay on. I have something in my head that looks similar to a cherry picker, with wheels on the bottom and it reaches over the engine, supporting your chest with a platform.
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From: pawhuska,okla.
kwik- thanks. I think if I get mad enough I'll do it. Just came in from checking what the dealer checked. My ebp actuator rod is indeed either broke or unscrewed. Maybe I can wire it open but not sure of where the pivot arm is to be. Checked my wastegate again with 20lbs. shop air and it moves about 1-2 inches,not sure how far it's supposed to. Think of calling the dealer for more explanation.
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Fleet Owner
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From: Rio Rico, AZ.
With the control rod disconnected the wastegate lever will move a full 90 degrees. Be careful if you do that, it can jam in the open position very easily and you have to work the lever back and forth to free it up. On my turbo the 1" of movement is about all the movement that I get as well, it's limited by the travel of the canister itself.
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From: Rio Rico, AZ.
Another thing: When you read in the manual about having the WG open at 5 psi, that means when the lever just starts to move at 5 psi.
I've set mine to 10 psi and like it. I still have WG control, boost limits to 18-20 psi, no power loss because of it, no smoke either. The only time I get an overpressure is when I am pulling a mountain pass with the trailer and I am WOT. And dropping the WG canister to 5 psi won't fix that situation. There is simply so much exhaust pressure that it's spinning the turbo higher than design because of the extra fuel provided by the Predator Tow/Haul mode.
I've set mine to 10 psi and like it. I still have WG control, boost limits to 18-20 psi, no power loss because of it, no smoke either. The only time I get an overpressure is when I am pulling a mountain pass with the trailer and I am WOT. And dropping the WG canister to 5 psi won't fix that situation. There is simply so much exhaust pressure that it's spinning the turbo higher than design because of the extra fuel provided by the Predator Tow/Haul mode.
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From: Northeastern Pa - USA
here i go ... if the ebpv is not operating correctly, does one of the sensors know this and limit the fuel thus reducing high egt's ? If one of the boots is leaking or there is hole in the aftercooler, wont you get hi egt's or is there a sensor looking at that too ? The way I learned about diesels is the fuel is loaded into the system and the turbo is used to cool the fire and prevent meltdown of pistons. I dont think an oil leak from a pedestal o ring wont cause the boost to be lower. I have found that if there is a leak from induction side, there is usually a higher egt and reduction of boost. I also learned that this electronic age is making me nuttier than usual. I hope this helps out with the decision to find another stealership or have them sign a form guaranteeing the repair and why. Good luck, bill
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From: pawhuska,okla.
I understand that any mal-function of ebp system it goes into default mode which keeps it open. Mine, suppossedly is a broken actuator shaft and it just flobs back and forth. Been trying to determine if in fact it is broken or just unscrewed from the shaft.LOL I don't know why the stealers try and feed us this way. We aren't bottom feeders. I agree with the induction being the source of boost. Low boost=High EGT's in my case,not the ebpv. If they can't pull codes they scratch.
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From: Central, Al
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From: pawhuska,okla.
Originally Posted by amiller93
