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1994.5 - 1997 7.3L Power Stroke Diesel  

EBP valve problem when cold???

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Old Dec 7, 2009 | 10:40 PM
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EBP valve problem when cold???

Lately in my town it hasnt gotten above 30 degrees in the last couple of weeks. And my truck being from cali all its life I thought it would have a problem in the cold and sound like it does. I cant get an honest answer of whether its good or bad. Driving lately it sounds like I have a jake brake on my truck from the cold. I heard that the exhaust valve is closing because the eot is not at normal operating temp and is trying to warm the engine. Others say the valve is going out and is bad.... Many people have been coming into work asking the same questions about there trucks and honestly I dont know. Any help or ideas? Thanks
 
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Old Dec 7, 2009 | 10:51 PM
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I'm not too good with these cali trucks, but it seems they do have problems with the EBPV and you can't just unplug them like 49 staters. I hope Bill sees this and responds. bill knows these things for sure.

I have heard of people putting a resistor in there and putting it on a switch, but also heard this will mess up some things after awhile.
 
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Old Dec 8, 2009 | 07:39 AM
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The EBPV systems are the same 49state and cali.
The pressure sensor signal to the pcm is the ckt that
will cycle the valve while the system is active.

Bill
 
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Old Dec 8, 2009 | 07:45 AM
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Originally Posted by 7.3 junkie
Lately in my town it hasnt gotten above 30 degrees in the last couple of weeks. And my truck being from cali all its life I thought it would have a problem in the cold and sound like it does. I cant get an honest answer of whether its good or bad. Driving lately it sounds like I have a jake brake on my truck from the cold. I heard that the exhaust valve is closing because the eot is not at normal operating temp and is trying to warm the engine. Others say the valve is going out and is bad.... Many people have been coming into work asking the same questions about there trucks and honestly I dont know. Any help or ideas? Thanks
It is working as designed , Most of us have disabled it . IIRC . Bill has done some testing on the system , & has seen some benefit to it other than speeding up warm up ...
 
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Old Dec 8, 2009 | 08:03 AM
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Bill what is the amperage pull of a EBPV solenoid? Since Wattage is just amperage times voltage....


lets say 14 volts to be safe, what type of amperage does that soleniod take? I bet its not more than 1/20 of an amp, but i have no way of testing it I dont think.
 
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Old Dec 8, 2009 | 08:39 AM
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Originally Posted by MustangMatt96GT
Bill what is the amperage pull of a EBPV solenoid? Since Wattage is just amperage times voltage....


lets say 14 volts to be safe, what type of amperage does that soleniod take? I bet its not more than 1/20 of an amp, but i have no way of testing it I dont think.
I never had a reason to venture down that road to figure it out.


Extremely short answer to your other statement

Conductive objects are always full of movable electric charges, and motions of these charges are called 'electric currents.' Voltage causes electric currents because voltage acts like a pressure which pushes the conductors' own charges along. A conductor offers a certain amount of electrical resistance or "friction," and the friction against the flowing charges heats up the resistive object. The flow-rate of the moving charges is measured in Amperes. The transfer of electrical energy (as well as the rate of heat output) is measured in Watts. The electrical resistance is measured in Ohms.

B
 
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Old Dec 8, 2009 | 09:04 AM
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From: Lakewood, Colorado
Originally Posted by MADVAN
I never had a reason to venture down that road to figure it out.


Extremely short answer to your other statement

Conductive objects are always full of movable electric charges, and motions of these charges are called 'electric currents.' Voltage causes electric currents because voltage acts like a pressure which pushes the conductors' own charges along. A conductor offers a certain amount of electrical resistance or "friction," and the friction against the flowing charges heats up the resistive object. The flow-rate of the moving charges is measured in Amperes. The transfer of electrical energy (as well as the rate of heat output) is measured in Watts. The electrical resistance is measured in Ohms.

B
That would be exactly why I am asking. If i get a resistor high enough wattage, I looked up the one I got and its a 1 watt resistor, I could use it in place of the EBPV solenoid. That way I'm not burning anything up, but i also don't have a stupid CEL. I figure since the electrical system in a vehicle can be around 14-15 volts on occasion, that would give me enough room for 1/15 of an amperage pull, or 1/20th to be on the safer side. I don't see how there would be any difference than it running an exhaust back pressure valve. Hell I would even put in a light bulb in between the two instead of a "resistor" since they are the same thing one just doesn't give off a by product other than heat. How would I go about testing the amperage pull of the EBPV? do i just run the mulitmeter inline on the amerage setting. I doubt it takes more than 10 AMPS which is where my multimeter is rated.
 
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