EBPV?? - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 02-01-2013, 09:53 PM Thread Starter
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EBPV??

Okay ive noticed my truck hissing when i let it warm up and its annoying i know thats the exhaust back pressure valve but i was driving around just cruising and i noticed it was hissing when i got on it it quit and when i let off it would quit so i figured out it was the EBPV as well. Well ive also been having some other prolbems when im under heavy acceleration i can go 1st-4th gear just find and when i hit 5th i rhomp down its like its under a load and dosent have enough power and around 15-22 pounds of boost it surges (which i thought was a compressor surge). And When i get about 60 i can rhomp on it and it will boost up to 30 just fine with no surge. Plus here lately ive been noticing i have had higher egts like its a struggle to keep the egts under 600 running 55 (and the probe is tapped after the turbo) but on other times it i can run 55-70 and it stays right at 400 degrees. plus i have a smoke box for my stacks could my smoke box be causing too much back pressure causing higher egts and the surge or could it be the EBPV sticking and causing it or a combo of both? or something else any help would be greatly appreciated THANK YOU!!
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post #2 of 4 Old 02-02-2013, 02:44 AM
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EBPV??

Try letting it warm up before romping. The ebpv is there for a reason. And if it is a five speed, fifth gear isn't made for power, it's made for mileage. And I'm guessing the smoke box is your problem as its just wasting fuel. Not trying to be a jerk, just offering my opinion. Also the ebpv may need cleaned if its sticking too long.


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post #3 of 4 Old 02-02-2013, 06:03 AM Thread Starter
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I did let it warm up before i romped down on it thats one thing that i make sure i do. and its actually a six speed but i dont really count the granny gear as a driving gear considering i never use it unless im stuck or need to move a little bit forward. and how is the smoke box wasting fuel im using it instead of a y pipe cause i kinda dont have the money to spend to buy a y pipe setup so i used some metal i had around the house. And the truck almost has 180k miles on it so i it could need cleaned but im probablly gonna take it out if it is the prolbem cause to me it would be better to not have it then burn the turbo up or melt the pistons
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post #4 of 4 Old 02-02-2013, 08:16 AM
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firstly, your egt probe should be tapped as close to the exhaust port as possible to get an accurate reading. the best place is in the manifold, number 8 port. easiest spot to tap.
second, it's possible the ebpv is being commanded shut due to a bad ect sensor or one of the other inputs the pcm uses to control it. or it could just be sticking. or you haven't reached operating temp when this is occurring and the ebpv is just doing what it should.
if the veicle has reached operating temp when this happens, try disconnecting the ebpv solenoid, located under the turbo. this will confirm that it is an ebpv issue and you can further diagnose where the fault is

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