7.3 Problems i need help
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
if the EBPS is giving the pcm the wrong reading..the pcm is thinking it needs to be in cold temp mode..thus making the motor try to warm up when it is already warm and out side temps are hot.. adding more fuel and choking the motor up a little to make it work harder(using the EBPV)..you will be loosing power, boost, MPG and higher EGT's..this is why so many of us are replacing the tube...
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Originally Posted by k2vailkid
I'm no Navistar technician, but if that was the case, then all of us whom have deleted the EBPV and pedestal shouldn't need the EBP sensor. But, I understood the EBPV to be a means of warming up the engine quicker when cold. Which in turn tells me that air temp, not pressure, would be the determining factor in how the EBPV operates. No?
The EBP sensor is still a mystery to me. It's effects boost, mileage, fuel delivery, and I am aware that Jody's tuning uses info from that sensor. The jury's still out, but more information continues to surface. I would love more info as well....
-Kevin
The EBP sensor is still a mystery to me. It's effects boost, mileage, fuel delivery, and I am aware that Jody's tuning uses info from that sensor. The jury's still out, but more information continues to surface. I would love more info as well....
-Kevin
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
More fuel for the fire...
This is from the manual....
Exhaust Back-Pressure Sensor
The Exhaust Back-Pressure sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a linear analog voltage signal that indicates pressure. The Exhaust Back-Pressure sensor measures the pressure in the RH exhaust manifold. This sensor is used in conjunction with the exhaust back-pressure regulator to form a closed loop exhaust back-pressure control system.
The exhaust back-pressure is controlled by the PCM to provide more heat to the coolant for cab heating when ambient air temperature is below 7° C (45°F) and engine oil temperature is below 75°C (167°F) during low load, low speed operating conditions.
An open or short in the Exhaust Back-Pressure sensor wiring will result in a low out of range voltage at the PCM, and the PCM will disable Exhaust Back-Pressure control.
It sounds like , if you don't have one , there should be no responce from the PCM....
This is from the manual....
Exhaust Back-Pressure Sensor
The Exhaust Back-Pressure sensor is a variable capacitor sensor that is supplied a 5-volt reference signal by the PCM and returns a linear analog voltage signal that indicates pressure. The Exhaust Back-Pressure sensor measures the pressure in the RH exhaust manifold. This sensor is used in conjunction with the exhaust back-pressure regulator to form a closed loop exhaust back-pressure control system.
The exhaust back-pressure is controlled by the PCM to provide more heat to the coolant for cab heating when ambient air temperature is below 7° C (45°F) and engine oil temperature is below 75°C (167°F) during low load, low speed operating conditions.
An open or short in the Exhaust Back-Pressure sensor wiring will result in a low out of range voltage at the PCM, and the PCM will disable Exhaust Back-Pressure control.
It sounds like , if you don't have one , there should be no responce from the PCM....
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