Exhaust Back Pressure???
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Fleet Mechanic
Joined: Nov 2004
Posts: 1,427
Likes: 10
From: Templeton, Massachussetts
Exhaust Back Pressure???
does anyone know what the proper back preeure should normally be on a stock '96psd?
my datastream shows 15-17psi from idle to 2500 in nuetral.
is this normal?
i am trying to diagnose a faulty EBPV and i need to make sure this is proper, if this seems too high then i assume that may be why the actuator does not move.
thanks guys.
my datastream shows 15-17psi from idle to 2500 in nuetral.
is this normal?
i am trying to diagnose a faulty EBPV and i need to make sure this is proper, if this seems too high then i assume that may be why the actuator does not move.
thanks guys.
Senior User
Joined: Jan 2004
Posts: 287
Likes: 0
From: Gainesville, Texas
i have no clue about how much pressure but my ebpv quit on my 96 and the only thing i can think of is the exhaust backpressure sensor b/c that is what my superchip is tellin me when i do a diagnostic test on it.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
I'm guessing that's higher than it should be.
In general, the exhaust backpressure will run roughly twice the boost when loaded. I'm not really sure what the unloaded pressures should read, but I would think that at idle the pressure should be virtually nil.
In general, the exhaust backpressure will run roughly twice the boost when loaded. I'm not really sure what the unloaded pressures should read, but I would think that at idle the pressure should be virtually nil.
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Fleet Mechanic
Joined: Nov 2004
Posts: 1,427
Likes: 10
From: Templeton, Massachussetts
Originally Posted by cookie88
I'm guessing that's higher than it should be.
In general, the exhaust backpressure will run roughly twice the boost when loaded. I'm not really sure what the unloaded pressures should read, but I would think that at idle the pressure should be virtually nil.
In general, the exhaust backpressure will run roughly twice the boost when loaded. I'm not really sure what the unloaded pressures should read, but I would think that at idle the pressure should be virtually nil.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Your datastream says the pressure never changes even though you are increasing engine speed? That sounds like a faulty sensor to me - not a bad EBPV. I am not saying that the EBPV is good, just that I think your sensor is bad too.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Originally Posted by Bluesbandit
I still say gut the sucker and move on with life.
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Fleet Mechanic
Joined: Feb 2004
Posts: 1,816
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From: River Valley AR
Originally Posted by Kwikkordead
Your datastream says the pressure never changes even though you are increasing engine speed? That sounds like a faulty sensor to me - not a bad EBPV. I am not saying that the EBPV is good, just that I think your sensor is bad too.
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